* [PATCH v2 01/21] crypto: x86/camellia - switch to XTS template
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
@ 2021-01-05 16:47 ` Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 02/21] crypto: x86/cast6 " Ard Biesheuvel
` (20 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:47 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Now that the XTS template can wrap accelerated ECB modes, it can be
used to implement Camellia in XTS mode as well, which turns out to
be at least as fast, and sometimes even faster.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/camellia-aesni-avx-asm_64.S | 181 -----------------
arch/x86/crypto/camellia-aesni-avx2-asm_64.S | 207 --------------------
arch/x86/crypto/camellia_aesni_avx2_glue.c | 70 -------
arch/x86/crypto/camellia_aesni_avx_glue.c | 101 +---------
arch/x86/include/asm/crypto/camellia.h | 18 --
crypto/Kconfig | 2 +-
6 files changed, 2 insertions(+), 577 deletions(-)
diff --git a/arch/x86/crypto/camellia-aesni-avx-asm_64.S b/arch/x86/crypto/camellia-aesni-avx-asm_64.S
index ecc0a9a905c4..471c34e6cac2 100644
--- a/arch/x86/crypto/camellia-aesni-avx-asm_64.S
+++ b/arch/x86/crypto/camellia-aesni-avx-asm_64.S
@@ -17,7 +17,6 @@
#include <linux/linkage.h>
#include <asm/frame.h>
-#include <asm/nospec-branch.h>
#define CAMELLIA_TABLE_BYTE_LEN 272
@@ -593,10 +592,6 @@ SYM_FUNC_END(roundsm16_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab)
.Lbswap128_mask:
.byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
-/* For XTS mode IV generation */
-.Lxts_gf128mul_and_shl1_mask:
- .byte 0x87, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0
-
/*
* pre-SubByte transform
*
@@ -1111,179 +1106,3 @@ SYM_FUNC_START(camellia_ctr_16way)
FRAME_END
ret;
SYM_FUNC_END(camellia_ctr_16way)
-
-#define gf128mul_x_ble(iv, mask, tmp) \
- vpsrad $31, iv, tmp; \
- vpaddq iv, iv, iv; \
- vpshufd $0x13, tmp, tmp; \
- vpand mask, tmp, tmp; \
- vpxor tmp, iv, iv;
-
-.align 8
-SYM_FUNC_START_LOCAL(camellia_xts_crypt_16way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst (16 blocks)
- * %rdx: src (16 blocks)
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- * %r8: index for input whitening key
- * %r9: pointer to __camellia_enc_blk16 or __camellia_dec_blk16
- */
- FRAME_BEGIN
-
- subq $(16 * 16), %rsp;
- movq %rsp, %rax;
-
- vmovdqa .Lxts_gf128mul_and_shl1_mask, %xmm14;
-
- /* load IV */
- vmovdqu (%rcx), %xmm0;
- vpxor 0 * 16(%rdx), %xmm0, %xmm15;
- vmovdqu %xmm15, 15 * 16(%rax);
- vmovdqu %xmm0, 0 * 16(%rsi);
-
- /* construct IVs */
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 1 * 16(%rdx), %xmm0, %xmm15;
- vmovdqu %xmm15, 14 * 16(%rax);
- vmovdqu %xmm0, 1 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 2 * 16(%rdx), %xmm0, %xmm13;
- vmovdqu %xmm0, 2 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 3 * 16(%rdx), %xmm0, %xmm12;
- vmovdqu %xmm0, 3 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 4 * 16(%rdx), %xmm0, %xmm11;
- vmovdqu %xmm0, 4 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 5 * 16(%rdx), %xmm0, %xmm10;
- vmovdqu %xmm0, 5 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 6 * 16(%rdx), %xmm0, %xmm9;
- vmovdqu %xmm0, 6 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 7 * 16(%rdx), %xmm0, %xmm8;
- vmovdqu %xmm0, 7 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 8 * 16(%rdx), %xmm0, %xmm7;
- vmovdqu %xmm0, 8 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 9 * 16(%rdx), %xmm0, %xmm6;
- vmovdqu %xmm0, 9 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 10 * 16(%rdx), %xmm0, %xmm5;
- vmovdqu %xmm0, 10 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 11 * 16(%rdx), %xmm0, %xmm4;
- vmovdqu %xmm0, 11 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 12 * 16(%rdx), %xmm0, %xmm3;
- vmovdqu %xmm0, 12 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 13 * 16(%rdx), %xmm0, %xmm2;
- vmovdqu %xmm0, 13 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 14 * 16(%rdx), %xmm0, %xmm1;
- vmovdqu %xmm0, 14 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vpxor 15 * 16(%rdx), %xmm0, %xmm15;
- vmovdqu %xmm15, 0 * 16(%rax);
- vmovdqu %xmm0, 15 * 16(%rsi);
-
- gf128mul_x_ble(%xmm0, %xmm14, %xmm15);
- vmovdqu %xmm0, (%rcx);
-
- /* inpack16_pre: */
- vmovq (key_table)(CTX, %r8, 8), %xmm15;
- vpshufb .Lpack_bswap, %xmm15, %xmm15;
- vpxor 0 * 16(%rax), %xmm15, %xmm0;
- vpxor %xmm1, %xmm15, %xmm1;
- vpxor %xmm2, %xmm15, %xmm2;
- vpxor %xmm3, %xmm15, %xmm3;
- vpxor %xmm4, %xmm15, %xmm4;
- vpxor %xmm5, %xmm15, %xmm5;
- vpxor %xmm6, %xmm15, %xmm6;
- vpxor %xmm7, %xmm15, %xmm7;
- vpxor %xmm8, %xmm15, %xmm8;
- vpxor %xmm9, %xmm15, %xmm9;
- vpxor %xmm10, %xmm15, %xmm10;
- vpxor %xmm11, %xmm15, %xmm11;
- vpxor %xmm12, %xmm15, %xmm12;
- vpxor %xmm13, %xmm15, %xmm13;
- vpxor 14 * 16(%rax), %xmm15, %xmm14;
- vpxor 15 * 16(%rax), %xmm15, %xmm15;
-
- CALL_NOSPEC r9;
-
- addq $(16 * 16), %rsp;
-
- vpxor 0 * 16(%rsi), %xmm7, %xmm7;
- vpxor 1 * 16(%rsi), %xmm6, %xmm6;
- vpxor 2 * 16(%rsi), %xmm5, %xmm5;
- vpxor 3 * 16(%rsi), %xmm4, %xmm4;
- vpxor 4 * 16(%rsi), %xmm3, %xmm3;
- vpxor 5 * 16(%rsi), %xmm2, %xmm2;
- vpxor 6 * 16(%rsi), %xmm1, %xmm1;
- vpxor 7 * 16(%rsi), %xmm0, %xmm0;
- vpxor 8 * 16(%rsi), %xmm15, %xmm15;
- vpxor 9 * 16(%rsi), %xmm14, %xmm14;
- vpxor 10 * 16(%rsi), %xmm13, %xmm13;
- vpxor 11 * 16(%rsi), %xmm12, %xmm12;
- vpxor 12 * 16(%rsi), %xmm11, %xmm11;
- vpxor 13 * 16(%rsi), %xmm10, %xmm10;
- vpxor 14 * 16(%rsi), %xmm9, %xmm9;
- vpxor 15 * 16(%rsi), %xmm8, %xmm8;
- write_output(%xmm7, %xmm6, %xmm5, %xmm4, %xmm3, %xmm2, %xmm1, %xmm0,
- %xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
- %xmm8, %rsi);
-
- FRAME_END
- ret;
-SYM_FUNC_END(camellia_xts_crypt_16way)
-
-SYM_FUNC_START(camellia_xts_enc_16way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst (16 blocks)
- * %rdx: src (16 blocks)
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- */
- xorl %r8d, %r8d; /* input whitening key, 0 for enc */
-
- leaq __camellia_enc_blk16, %r9;
-
- jmp camellia_xts_crypt_16way;
-SYM_FUNC_END(camellia_xts_enc_16way)
-
-SYM_FUNC_START(camellia_xts_dec_16way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst (16 blocks)
- * %rdx: src (16 blocks)
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- */
-
- cmpl $16, key_length(CTX);
- movl $32, %r8d;
- movl $24, %eax;
- cmovel %eax, %r8d; /* input whitening key, last for dec */
-
- leaq __camellia_dec_blk16, %r9;
-
- jmp camellia_xts_crypt_16way;
-SYM_FUNC_END(camellia_xts_dec_16way)
diff --git a/arch/x86/crypto/camellia-aesni-avx2-asm_64.S b/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
index 0907243c501c..9561dee52de0 100644
--- a/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
+++ b/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
@@ -7,7 +7,6 @@
#include <linux/linkage.h>
#include <asm/frame.h>
-#include <asm/nospec-branch.h>
#define CAMELLIA_TABLE_BYTE_LEN 272
@@ -629,12 +628,6 @@ SYM_FUNC_END(roundsm32_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab)
.Lbswap128_mask:
.byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
-/* For XTS mode */
-.Lxts_gf128mul_and_shl1_mask_0:
- .byte 0x87, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0
-.Lxts_gf128mul_and_shl1_mask_1:
- .byte 0x0e, 1, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0
-
/*
* pre-SubByte transform
*
@@ -1201,203 +1194,3 @@ SYM_FUNC_START(camellia_ctr_32way)
FRAME_END
ret;
SYM_FUNC_END(camellia_ctr_32way)
-
-#define gf128mul_x_ble(iv, mask, tmp) \
- vpsrad $31, iv, tmp; \
- vpaddq iv, iv, iv; \
- vpshufd $0x13, tmp, tmp; \
- vpand mask, tmp, tmp; \
- vpxor tmp, iv, iv;
-
-#define gf128mul_x2_ble(iv, mask1, mask2, tmp0, tmp1) \
- vpsrad $31, iv, tmp0; \
- vpaddq iv, iv, tmp1; \
- vpsllq $2, iv, iv; \
- vpshufd $0x13, tmp0, tmp0; \
- vpsrad $31, tmp1, tmp1; \
- vpand mask2, tmp0, tmp0; \
- vpshufd $0x13, tmp1, tmp1; \
- vpxor tmp0, iv, iv; \
- vpand mask1, tmp1, tmp1; \
- vpxor tmp1, iv, iv;
-
-.align 8
-SYM_FUNC_START_LOCAL(camellia_xts_crypt_32way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst (32 blocks)
- * %rdx: src (32 blocks)
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- * %r8: index for input whitening key
- * %r9: pointer to __camellia_enc_blk32 or __camellia_dec_blk32
- */
- FRAME_BEGIN
-
- vzeroupper;
-
- subq $(16 * 32), %rsp;
- movq %rsp, %rax;
-
- vbroadcasti128 .Lxts_gf128mul_and_shl1_mask_0, %ymm12;
-
- /* load IV and construct second IV */
- vmovdqu (%rcx), %xmm0;
- vmovdqa %xmm0, %xmm15;
- gf128mul_x_ble(%xmm0, %xmm12, %xmm13);
- vbroadcasti128 .Lxts_gf128mul_and_shl1_mask_1, %ymm13;
- vinserti128 $1, %xmm0, %ymm15, %ymm0;
- vpxor 0 * 32(%rdx), %ymm0, %ymm15;
- vmovdqu %ymm15, 15 * 32(%rax);
- vmovdqu %ymm0, 0 * 32(%rsi);
-
- /* construct IVs */
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 1 * 32(%rdx), %ymm0, %ymm15;
- vmovdqu %ymm15, 14 * 32(%rax);
- vmovdqu %ymm0, 1 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 2 * 32(%rdx), %ymm0, %ymm15;
- vmovdqu %ymm15, 13 * 32(%rax);
- vmovdqu %ymm0, 2 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 3 * 32(%rdx), %ymm0, %ymm15;
- vmovdqu %ymm15, 12 * 32(%rax);
- vmovdqu %ymm0, 3 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 4 * 32(%rdx), %ymm0, %ymm11;
- vmovdqu %ymm0, 4 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 5 * 32(%rdx), %ymm0, %ymm10;
- vmovdqu %ymm0, 5 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 6 * 32(%rdx), %ymm0, %ymm9;
- vmovdqu %ymm0, 6 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 7 * 32(%rdx), %ymm0, %ymm8;
- vmovdqu %ymm0, 7 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 8 * 32(%rdx), %ymm0, %ymm7;
- vmovdqu %ymm0, 8 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 9 * 32(%rdx), %ymm0, %ymm6;
- vmovdqu %ymm0, 9 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 10 * 32(%rdx), %ymm0, %ymm5;
- vmovdqu %ymm0, 10 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 11 * 32(%rdx), %ymm0, %ymm4;
- vmovdqu %ymm0, 11 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 12 * 32(%rdx), %ymm0, %ymm3;
- vmovdqu %ymm0, 12 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 13 * 32(%rdx), %ymm0, %ymm2;
- vmovdqu %ymm0, 13 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 14 * 32(%rdx), %ymm0, %ymm1;
- vmovdqu %ymm0, 14 * 32(%rsi);
-
- gf128mul_x2_ble(%ymm0, %ymm12, %ymm13, %ymm14, %ymm15);
- vpxor 15 * 32(%rdx), %ymm0, %ymm15;
- vmovdqu %ymm15, 0 * 32(%rax);
- vmovdqu %ymm0, 15 * 32(%rsi);
-
- vextracti128 $1, %ymm0, %xmm0;
- gf128mul_x_ble(%xmm0, %xmm12, %xmm15);
- vmovdqu %xmm0, (%rcx);
-
- /* inpack32_pre: */
- vpbroadcastq (key_table)(CTX, %r8, 8), %ymm15;
- vpshufb .Lpack_bswap, %ymm15, %ymm15;
- vpxor 0 * 32(%rax), %ymm15, %ymm0;
- vpxor %ymm1, %ymm15, %ymm1;
- vpxor %ymm2, %ymm15, %ymm2;
- vpxor %ymm3, %ymm15, %ymm3;
- vpxor %ymm4, %ymm15, %ymm4;
- vpxor %ymm5, %ymm15, %ymm5;
- vpxor %ymm6, %ymm15, %ymm6;
- vpxor %ymm7, %ymm15, %ymm7;
- vpxor %ymm8, %ymm15, %ymm8;
- vpxor %ymm9, %ymm15, %ymm9;
- vpxor %ymm10, %ymm15, %ymm10;
- vpxor %ymm11, %ymm15, %ymm11;
- vpxor 12 * 32(%rax), %ymm15, %ymm12;
- vpxor 13 * 32(%rax), %ymm15, %ymm13;
- vpxor 14 * 32(%rax), %ymm15, %ymm14;
- vpxor 15 * 32(%rax), %ymm15, %ymm15;
-
- CALL_NOSPEC r9;
-
- addq $(16 * 32), %rsp;
-
- vpxor 0 * 32(%rsi), %ymm7, %ymm7;
- vpxor 1 * 32(%rsi), %ymm6, %ymm6;
- vpxor 2 * 32(%rsi), %ymm5, %ymm5;
- vpxor 3 * 32(%rsi), %ymm4, %ymm4;
- vpxor 4 * 32(%rsi), %ymm3, %ymm3;
- vpxor 5 * 32(%rsi), %ymm2, %ymm2;
- vpxor 6 * 32(%rsi), %ymm1, %ymm1;
- vpxor 7 * 32(%rsi), %ymm0, %ymm0;
- vpxor 8 * 32(%rsi), %ymm15, %ymm15;
- vpxor 9 * 32(%rsi), %ymm14, %ymm14;
- vpxor 10 * 32(%rsi), %ymm13, %ymm13;
- vpxor 11 * 32(%rsi), %ymm12, %ymm12;
- vpxor 12 * 32(%rsi), %ymm11, %ymm11;
- vpxor 13 * 32(%rsi), %ymm10, %ymm10;
- vpxor 14 * 32(%rsi), %ymm9, %ymm9;
- vpxor 15 * 32(%rsi), %ymm8, %ymm8;
- write_output(%ymm7, %ymm6, %ymm5, %ymm4, %ymm3, %ymm2, %ymm1, %ymm0,
- %ymm15, %ymm14, %ymm13, %ymm12, %ymm11, %ymm10, %ymm9,
- %ymm8, %rsi);
-
- vzeroupper;
-
- FRAME_END
- ret;
-SYM_FUNC_END(camellia_xts_crypt_32way)
-
-SYM_FUNC_START(camellia_xts_enc_32way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst (32 blocks)
- * %rdx: src (32 blocks)
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- */
-
- xorl %r8d, %r8d; /* input whitening key, 0 for enc */
-
- leaq __camellia_enc_blk32, %r9;
-
- jmp camellia_xts_crypt_32way;
-SYM_FUNC_END(camellia_xts_enc_32way)
-
-SYM_FUNC_START(camellia_xts_dec_32way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst (32 blocks)
- * %rdx: src (32 blocks)
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- */
-
- cmpl $16, key_length(CTX);
- movl $32, %r8d;
- movl $24, %eax;
- cmovel %eax, %r8d; /* input whitening key, last for dec */
-
- leaq __camellia_dec_blk32, %r9;
-
- jmp camellia_xts_crypt_32way;
-SYM_FUNC_END(camellia_xts_dec_32way)
diff --git a/arch/x86/crypto/camellia_aesni_avx2_glue.c b/arch/x86/crypto/camellia_aesni_avx2_glue.c
index ccda647422d6..d956d0473668 100644
--- a/arch/x86/crypto/camellia_aesni_avx2_glue.c
+++ b/arch/x86/crypto/camellia_aesni_avx2_glue.c
@@ -9,7 +9,6 @@
#include <asm/crypto/glue_helper.h>
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
-#include <crypto/xts.h>
#include <linux/crypto.h>
#include <linux/err.h>
#include <linux/module.h>
@@ -26,11 +25,6 @@ asmlinkage void camellia_cbc_dec_32way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void camellia_ctr_32way(const void *ctx, u8 *dst, const u8 *src,
le128 *iv);
-asmlinkage void camellia_xts_enc_32way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-asmlinkage void camellia_xts_dec_32way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-
static const struct common_glue_ctx camellia_enc = {
.num_funcs = 4,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
@@ -69,22 +63,6 @@ static const struct common_glue_ctx camellia_ctr = {
} }
};
-static const struct common_glue_ctx camellia_enc_xts = {
- .num_funcs = 3,
- .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
- .fn_u = { .xts = camellia_xts_enc_32way }
- }, {
- .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
- .fn_u = { .xts = camellia_xts_enc_16way }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = camellia_xts_enc }
- } }
-};
-
static const struct common_glue_ctx camellia_dec = {
.num_funcs = 4,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
@@ -123,22 +101,6 @@ static const struct common_glue_ctx camellia_dec_cbc = {
} }
};
-static const struct common_glue_ctx camellia_dec_xts = {
- .num_funcs = 3,
- .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
- .fn_u = { .xts = camellia_xts_dec_32way }
- }, {
- .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
- .fn_u = { .xts = camellia_xts_dec_16way }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = camellia_xts_dec }
- } }
-};
-
static int camellia_setkey(struct crypto_skcipher *tfm, const u8 *key,
unsigned int keylen)
{
@@ -170,24 +132,6 @@ static int ctr_crypt(struct skcipher_request *req)
return glue_ctr_req_128bit(&camellia_ctr, req);
}
-static int xts_encrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct camellia_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&camellia_enc_xts, req, camellia_enc_blk,
- &ctx->tweak_ctx, &ctx->crypt_ctx, false);
-}
-
-static int xts_decrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct camellia_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&camellia_dec_xts, req, camellia_enc_blk,
- &ctx->tweak_ctx, &ctx->crypt_ctx, true);
-}
-
static struct skcipher_alg camellia_algs[] = {
{
.base.cra_name = "__ecb(camellia)",
@@ -231,20 +175,6 @@ static struct skcipher_alg camellia_algs[] = {
.setkey = camellia_setkey,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
- }, {
- .base.cra_name = "__xts(camellia)",
- .base.cra_driver_name = "__xts-camellia-aesni-avx2",
- .base.cra_priority = 500,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = CAMELLIA_BLOCK_SIZE,
- .base.cra_ctxsize = sizeof(struct camellia_xts_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = 2 * CAMELLIA_MIN_KEY_SIZE,
- .max_keysize = 2 * CAMELLIA_MAX_KEY_SIZE,
- .ivsize = CAMELLIA_BLOCK_SIZE,
- .setkey = xts_camellia_setkey,
- .encrypt = xts_encrypt,
- .decrypt = xts_decrypt,
},
};
diff --git a/arch/x86/crypto/camellia_aesni_avx_glue.c b/arch/x86/crypto/camellia_aesni_avx_glue.c
index 4e5de6ef206e..44614f8a452c 100644
--- a/arch/x86/crypto/camellia_aesni_avx_glue.c
+++ b/arch/x86/crypto/camellia_aesni_avx_glue.c
@@ -9,7 +9,6 @@
#include <asm/crypto/glue_helper.h>
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
-#include <crypto/xts.h>
#include <linux/crypto.h>
#include <linux/err.h>
#include <linux/module.h>
@@ -31,26 +30,6 @@ asmlinkage void camellia_ctr_16way(const void *ctx, u8 *dst, const u8 *src,
le128 *iv);
EXPORT_SYMBOL_GPL(camellia_ctr_16way);
-asmlinkage void camellia_xts_enc_16way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-EXPORT_SYMBOL_GPL(camellia_xts_enc_16way);
-
-asmlinkage void camellia_xts_dec_16way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-EXPORT_SYMBOL_GPL(camellia_xts_dec_16way);
-
-void camellia_xts_enc(const void *ctx, u8 *dst, const u8 *src, le128 *iv)
-{
- glue_xts_crypt_128bit_one(ctx, dst, src, iv, camellia_enc_blk);
-}
-EXPORT_SYMBOL_GPL(camellia_xts_enc);
-
-void camellia_xts_dec(const void *ctx, u8 *dst, const u8 *src, le128 *iv)
-{
- glue_xts_crypt_128bit_one(ctx, dst, src, iv, camellia_dec_blk);
-}
-EXPORT_SYMBOL_GPL(camellia_xts_dec);
-
static const struct common_glue_ctx camellia_enc = {
.num_funcs = 3,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
@@ -83,19 +62,6 @@ static const struct common_glue_ctx camellia_ctr = {
} }
};
-static const struct common_glue_ctx camellia_enc_xts = {
- .num_funcs = 2,
- .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
- .fn_u = { .xts = camellia_xts_enc_16way }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = camellia_xts_enc }
- } }
-};
-
static const struct common_glue_ctx camellia_dec = {
.num_funcs = 3,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
@@ -128,19 +94,6 @@ static const struct common_glue_ctx camellia_dec_cbc = {
} }
};
-static const struct common_glue_ctx camellia_dec_xts = {
- .num_funcs = 2,
- .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
- .fn_u = { .xts = camellia_xts_dec_16way }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = camellia_xts_dec }
- } }
-};
-
static int camellia_setkey(struct crypto_skcipher *tfm, const u8 *key,
unsigned int keylen)
{
@@ -172,44 +125,6 @@ static int ctr_crypt(struct skcipher_request *req)
return glue_ctr_req_128bit(&camellia_ctr, req);
}
-int xts_camellia_setkey(struct crypto_skcipher *tfm, const u8 *key,
- unsigned int keylen)
-{
- struct camellia_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
- int err;
-
- err = xts_verify_key(tfm, key, keylen);
- if (err)
- return err;
-
- /* first half of xts-key is for crypt */
- err = __camellia_setkey(&ctx->crypt_ctx, key, keylen / 2);
- if (err)
- return err;
-
- /* second half of xts-key is for tweak */
- return __camellia_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2);
-}
-EXPORT_SYMBOL_GPL(xts_camellia_setkey);
-
-static int xts_encrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct camellia_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&camellia_enc_xts, req, camellia_enc_blk,
- &ctx->tweak_ctx, &ctx->crypt_ctx, false);
-}
-
-static int xts_decrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct camellia_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&camellia_dec_xts, req, camellia_enc_blk,
- &ctx->tweak_ctx, &ctx->crypt_ctx, true);
-}
-
static struct skcipher_alg camellia_algs[] = {
{
.base.cra_name = "__ecb(camellia)",
@@ -253,21 +168,7 @@ static struct skcipher_alg camellia_algs[] = {
.setkey = camellia_setkey,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
- }, {
- .base.cra_name = "__xts(camellia)",
- .base.cra_driver_name = "__xts-camellia-aesni",
- .base.cra_priority = 400,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = CAMELLIA_BLOCK_SIZE,
- .base.cra_ctxsize = sizeof(struct camellia_xts_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = 2 * CAMELLIA_MIN_KEY_SIZE,
- .max_keysize = 2 * CAMELLIA_MAX_KEY_SIZE,
- .ivsize = CAMELLIA_BLOCK_SIZE,
- .setkey = xts_camellia_setkey,
- .encrypt = xts_encrypt,
- .decrypt = xts_decrypt,
- },
+ }
};
static struct simd_skcipher_alg *camellia_simd_algs[ARRAY_SIZE(camellia_algs)];
diff --git a/arch/x86/include/asm/crypto/camellia.h b/arch/x86/include/asm/crypto/camellia.h
index f6d91861cb14..0e5f82adbaf9 100644
--- a/arch/x86/include/asm/crypto/camellia.h
+++ b/arch/x86/include/asm/crypto/camellia.h
@@ -19,18 +19,10 @@ struct camellia_ctx {
u32 key_length;
};
-struct camellia_xts_ctx {
- struct camellia_ctx tweak_ctx;
- struct camellia_ctx crypt_ctx;
-};
-
extern int __camellia_setkey(struct camellia_ctx *cctx,
const unsigned char *key,
unsigned int key_len);
-extern int xts_camellia_setkey(struct crypto_skcipher *tfm, const u8 *key,
- unsigned int keylen);
-
/* regular block cipher functions */
asmlinkage void __camellia_enc_blk(const void *ctx, u8 *dst, const u8 *src,
bool xor);
@@ -49,11 +41,6 @@ asmlinkage void camellia_cbc_dec_16way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void camellia_ctr_16way(const void *ctx, u8 *dst, const u8 *src,
le128 *iv);
-asmlinkage void camellia_xts_enc_16way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-asmlinkage void camellia_xts_dec_16way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-
static inline void camellia_enc_blk(const void *ctx, u8 *dst, const u8 *src)
{
__camellia_enc_blk(ctx, dst, src, false);
@@ -83,9 +70,4 @@ extern void camellia_crypt_ctr(const void *ctx, u8 *dst, const u8 *src,
extern void camellia_crypt_ctr_2way(const void *ctx, u8 *dst, const u8 *src,
le128 *iv);
-extern void camellia_xts_enc(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-extern void camellia_xts_dec(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-
#endif /* ASM_X86_CAMELLIA_H */
diff --git a/crypto/Kconfig b/crypto/Kconfig
index c48ca26e2169..b9ea4e262ebe 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1305,7 +1305,7 @@ config CRYPTO_CAMELLIA_AESNI_AVX_X86_64
select CRYPTO_CAMELLIA_X86_64
select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SIMD
- select CRYPTO_XTS
+ imply CRYPTO_XTS
help
Camellia cipher algorithm module (x86_64/AES-NI/AVX).
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 02/21] crypto: x86/cast6 - switch to XTS template
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 01/21] crypto: x86/camellia - switch to XTS template Ard Biesheuvel
@ 2021-01-05 16:47 ` Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 03/21] crypto: x86/serpent- " Ard Biesheuvel
` (19 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:47 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Now that the XTS template can wrap accelerated ECB modes, it can be
used to implement CAST6 in XTS mode as well, which turns out to
be at least as fast, and sometimes even faster
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/cast6-avx-x86_64-asm_64.S | 56 -----------
arch/x86/crypto/cast6_avx_glue.c | 98 --------------------
crypto/Kconfig | 2 +-
3 files changed, 1 insertion(+), 155 deletions(-)
diff --git a/arch/x86/crypto/cast6-avx-x86_64-asm_64.S b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
index 932a3ce32a88..0c1ea836215a 100644
--- a/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
+++ b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
@@ -212,8 +212,6 @@
.section .rodata.cst16, "aM", @progbits, 16
.align 16
-.Lxts_gf128mul_and_shl1_mask:
- .byte 0x87, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0
.Lbswap_mask:
.byte 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12
.Lbswap128_mask:
@@ -440,57 +438,3 @@ SYM_FUNC_START(cast6_ctr_8way)
FRAME_END
ret;
SYM_FUNC_END(cast6_ctr_8way)
-
-SYM_FUNC_START(cast6_xts_enc_8way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst
- * %rdx: src
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- */
- FRAME_BEGIN
- pushq %r15;
-
- movq %rdi, CTX
- movq %rsi, %r11;
-
- /* regs <= src, dst <= IVs, regs <= regs xor IVs */
- load_xts_8way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2,
- RX, RKR, RKM, .Lxts_gf128mul_and_shl1_mask);
-
- call __cast6_enc_blk8;
-
- /* dst <= regs xor IVs(in dst) */
- store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
-
- popq %r15;
- FRAME_END
- ret;
-SYM_FUNC_END(cast6_xts_enc_8way)
-
-SYM_FUNC_START(cast6_xts_dec_8way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst
- * %rdx: src
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- */
- FRAME_BEGIN
- pushq %r15;
-
- movq %rdi, CTX
- movq %rsi, %r11;
-
- /* regs <= src, dst <= IVs, regs <= regs xor IVs */
- load_xts_8way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2,
- RX, RKR, RKM, .Lxts_gf128mul_and_shl1_mask);
-
- call __cast6_dec_blk8;
-
- /* dst <= regs xor IVs(in dst) */
- store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
-
- popq %r15;
- FRAME_END
- ret;
-SYM_FUNC_END(cast6_xts_dec_8way)
diff --git a/arch/x86/crypto/cast6_avx_glue.c b/arch/x86/crypto/cast6_avx_glue.c
index 48e0f37796fa..5a21d3e9041c 100644
--- a/arch/x86/crypto/cast6_avx_glue.c
+++ b/arch/x86/crypto/cast6_avx_glue.c
@@ -15,7 +15,6 @@
#include <crypto/algapi.h>
#include <crypto/cast6.h>
#include <crypto/internal/simd.h>
-#include <crypto/xts.h>
#include <asm/crypto/glue_helper.h>
#define CAST6_PARALLEL_BLOCKS 8
@@ -27,27 +26,12 @@ asmlinkage void cast6_cbc_dec_8way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void cast6_ctr_8way(const void *ctx, u8 *dst, const u8 *src,
le128 *iv);
-asmlinkage void cast6_xts_enc_8way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-asmlinkage void cast6_xts_dec_8way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-
static int cast6_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
{
return cast6_setkey(&tfm->base, key, keylen);
}
-static void cast6_xts_enc(const void *ctx, u8 *dst, const u8 *src, le128 *iv)
-{
- glue_xts_crypt_128bit_one(ctx, dst, src, iv, __cast6_encrypt);
-}
-
-static void cast6_xts_dec(const void *ctx, u8 *dst, const u8 *src, le128 *iv)
-{
- glue_xts_crypt_128bit_one(ctx, dst, src, iv, __cast6_decrypt);
-}
-
static void cast6_crypt_ctr(const void *ctx, u8 *d, const u8 *s, le128 *iv)
{
be128 ctrblk;
@@ -87,19 +71,6 @@ static const struct common_glue_ctx cast6_ctr = {
} }
};
-static const struct common_glue_ctx cast6_enc_xts = {
- .num_funcs = 2,
- .fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAST6_PARALLEL_BLOCKS,
- .fn_u = { .xts = cast6_xts_enc_8way }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = cast6_xts_enc }
- } }
-};
-
static const struct common_glue_ctx cast6_dec = {
.num_funcs = 2,
.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
@@ -126,19 +97,6 @@ static const struct common_glue_ctx cast6_dec_cbc = {
} }
};
-static const struct common_glue_ctx cast6_dec_xts = {
- .num_funcs = 2,
- .fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAST6_PARALLEL_BLOCKS,
- .fn_u = { .xts = cast6_xts_dec_8way }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = cast6_xts_dec }
- } }
-};
-
static int ecb_encrypt(struct skcipher_request *req)
{
return glue_ecb_req_128bit(&cast6_enc, req);
@@ -164,48 +122,6 @@ static int ctr_crypt(struct skcipher_request *req)
return glue_ctr_req_128bit(&cast6_ctr, req);
}
-struct cast6_xts_ctx {
- struct cast6_ctx tweak_ctx;
- struct cast6_ctx crypt_ctx;
-};
-
-static int xts_cast6_setkey(struct crypto_skcipher *tfm, const u8 *key,
- unsigned int keylen)
-{
- struct cast6_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
- int err;
-
- err = xts_verify_key(tfm, key, keylen);
- if (err)
- return err;
-
- /* first half of xts-key is for crypt */
- err = __cast6_setkey(&ctx->crypt_ctx, key, keylen / 2);
- if (err)
- return err;
-
- /* second half of xts-key is for tweak */
- return __cast6_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2);
-}
-
-static int xts_encrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct cast6_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&cast6_enc_xts, req, __cast6_encrypt,
- &ctx->tweak_ctx, &ctx->crypt_ctx, false);
-}
-
-static int xts_decrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct cast6_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&cast6_dec_xts, req, __cast6_encrypt,
- &ctx->tweak_ctx, &ctx->crypt_ctx, true);
-}
-
static struct skcipher_alg cast6_algs[] = {
{
.base.cra_name = "__ecb(cast6)",
@@ -249,20 +165,6 @@ static struct skcipher_alg cast6_algs[] = {
.setkey = cast6_setkey_skcipher,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
- }, {
- .base.cra_name = "__xts(cast6)",
- .base.cra_driver_name = "__xts-cast6-avx",
- .base.cra_priority = 200,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = CAST6_BLOCK_SIZE,
- .base.cra_ctxsize = sizeof(struct cast6_xts_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = 2 * CAST6_MIN_KEY_SIZE,
- .max_keysize = 2 * CAST6_MAX_KEY_SIZE,
- .ivsize = CAST6_BLOCK_SIZE,
- .setkey = xts_cast6_setkey,
- .encrypt = xts_encrypt,
- .decrypt = xts_decrypt,
},
};
diff --git a/crypto/Kconfig b/crypto/Kconfig
index b9ea4e262ebe..03e8468e57df 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1394,7 +1394,7 @@ config CRYPTO_CAST6_AVX_X86_64
select CRYPTO_CAST_COMMON
select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SIMD
- select CRYPTO_XTS
+ imply CRYPTO_XTS
help
The CAST6 encryption algorithm (synonymous with CAST-256) is
described in RFC2612.
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 03/21] crypto: x86/serpent- switch to XTS template
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 01/21] crypto: x86/camellia - switch to XTS template Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 02/21] crypto: x86/cast6 " Ard Biesheuvel
@ 2021-01-05 16:47 ` Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 04/21] crypto: x86/twofish - " Ard Biesheuvel
` (18 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:47 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Now that the XTS template can wrap accelerated ECB modes, it can be
used to implement Serpent in XTS mode as well, which turns out to
be at least as fast, and sometimes even faster
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/serpent-avx-x86_64-asm_64.S | 48 ----------
arch/x86/crypto/serpent-avx2-asm_64.S | 62 ------------
arch/x86/crypto/serpent_avx2_glue.c | 72 --------------
arch/x86/crypto/serpent_avx_glue.c | 101 --------------------
arch/x86/include/asm/crypto/serpent-avx.h | 21 ----
crypto/Kconfig | 2 +-
6 files changed, 1 insertion(+), 305 deletions(-)
diff --git a/arch/x86/crypto/serpent-avx-x86_64-asm_64.S b/arch/x86/crypto/serpent-avx-x86_64-asm_64.S
index ba9e4c1e7f5c..6b41f46bcc76 100644
--- a/arch/x86/crypto/serpent-avx-x86_64-asm_64.S
+++ b/arch/x86/crypto/serpent-avx-x86_64-asm_64.S
@@ -18,10 +18,6 @@
.align 16
.Lbswap128_mask:
.byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
-.section .rodata.cst16.xts_gf128mul_and_shl1_mask, "aM", @progbits, 16
-.align 16
-.Lxts_gf128mul_and_shl1_mask:
- .byte 0x87, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0
.text
@@ -735,47 +731,3 @@ SYM_FUNC_START(serpent_ctr_8way_avx)
FRAME_END
ret;
SYM_FUNC_END(serpent_ctr_8way_avx)
-
-SYM_FUNC_START(serpent_xts_enc_8way_avx)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst
- * %rdx: src
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- */
- FRAME_BEGIN
-
- /* regs <= src, dst <= IVs, regs <= regs xor IVs */
- load_xts_8way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2,
- RK0, RK1, RK2, .Lxts_gf128mul_and_shl1_mask);
-
- call __serpent_enc_blk8_avx;
-
- /* dst <= regs xor IVs(in dst) */
- store_xts_8way(%rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
-
- FRAME_END
- ret;
-SYM_FUNC_END(serpent_xts_enc_8way_avx)
-
-SYM_FUNC_START(serpent_xts_dec_8way_avx)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst
- * %rdx: src
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- */
- FRAME_BEGIN
-
- /* regs <= src, dst <= IVs, regs <= regs xor IVs */
- load_xts_8way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2,
- RK0, RK1, RK2, .Lxts_gf128mul_and_shl1_mask);
-
- call __serpent_dec_blk8_avx;
-
- /* dst <= regs xor IVs(in dst) */
- store_xts_8way(%rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2);
-
- FRAME_END
- ret;
-SYM_FUNC_END(serpent_xts_dec_8way_avx)
diff --git a/arch/x86/crypto/serpent-avx2-asm_64.S b/arch/x86/crypto/serpent-avx2-asm_64.S
index c9648aeae705..a510a949f02f 100644
--- a/arch/x86/crypto/serpent-avx2-asm_64.S
+++ b/arch/x86/crypto/serpent-avx2-asm_64.S
@@ -20,16 +20,6 @@
.Lbswap128_mask:
.byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
-.section .rodata.cst16.xts_gf128mul_and_shl1_mask_0, "aM", @progbits, 16
-.align 16
-.Lxts_gf128mul_and_shl1_mask_0:
- .byte 0x87, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0
-
-.section .rodata.cst16.xts_gf128mul_and_shl1_mask_1, "aM", @progbits, 16
-.align 16
-.Lxts_gf128mul_and_shl1_mask_1:
- .byte 0x0e, 1, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0
-
.text
#define CTX %rdi
@@ -759,55 +749,3 @@ SYM_FUNC_START(serpent_ctr_16way)
FRAME_END
ret;
SYM_FUNC_END(serpent_ctr_16way)
-
-SYM_FUNC_START(serpent_xts_enc_16way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst (16 blocks)
- * %rdx: src (16 blocks)
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- */
- FRAME_BEGIN
-
- vzeroupper;
-
- load_xts_16way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2,
- RD2, RK0, RK0x, RK1, RK1x, RK2, RK2x, RK3, RK3x, RNOT,
- .Lxts_gf128mul_and_shl1_mask_0,
- .Lxts_gf128mul_and_shl1_mask_1);
-
- call __serpent_enc_blk16;
-
- store_xts_16way(%rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
-
- vzeroupper;
-
- FRAME_END
- ret;
-SYM_FUNC_END(serpent_xts_enc_16way)
-
-SYM_FUNC_START(serpent_xts_dec_16way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst (16 blocks)
- * %rdx: src (16 blocks)
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- */
- FRAME_BEGIN
-
- vzeroupper;
-
- load_xts_16way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2,
- RD2, RK0, RK0x, RK1, RK1x, RK2, RK2x, RK3, RK3x, RNOT,
- .Lxts_gf128mul_and_shl1_mask_0,
- .Lxts_gf128mul_and_shl1_mask_1);
-
- call __serpent_dec_blk16;
-
- store_xts_16way(%rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2);
-
- vzeroupper;
-
- FRAME_END
- ret;
-SYM_FUNC_END(serpent_xts_dec_16way)
diff --git a/arch/x86/crypto/serpent_avx2_glue.c b/arch/x86/crypto/serpent_avx2_glue.c
index f973ace44ad3..9cdf2c078e21 100644
--- a/arch/x86/crypto/serpent_avx2_glue.c
+++ b/arch/x86/crypto/serpent_avx2_glue.c
@@ -12,7 +12,6 @@
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <crypto/serpent.h>
-#include <crypto/xts.h>
#include <asm/crypto/glue_helper.h>
#include <asm/crypto/serpent-avx.h>
@@ -25,11 +24,6 @@ asmlinkage void serpent_cbc_dec_16way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void serpent_ctr_16way(const void *ctx, u8 *dst, const u8 *src,
le128 *iv);
-asmlinkage void serpent_xts_enc_16way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-asmlinkage void serpent_xts_dec_16way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-
static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
{
@@ -68,22 +62,6 @@ static const struct common_glue_ctx serpent_ctr = {
} }
};
-static const struct common_glue_ctx serpent_enc_xts = {
- .num_funcs = 3,
- .fpu_blocks_limit = 8,
-
- .funcs = { {
- .num_blocks = 16,
- .fn_u = { .xts = serpent_xts_enc_16way }
- }, {
- .num_blocks = 8,
- .fn_u = { .xts = serpent_xts_enc_8way_avx }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = serpent_xts_enc }
- } }
-};
-
static const struct common_glue_ctx serpent_dec = {
.num_funcs = 3,
.fpu_blocks_limit = 8,
@@ -116,22 +94,6 @@ static const struct common_glue_ctx serpent_dec_cbc = {
} }
};
-static const struct common_glue_ctx serpent_dec_xts = {
- .num_funcs = 3,
- .fpu_blocks_limit = 8,
-
- .funcs = { {
- .num_blocks = 16,
- .fn_u = { .xts = serpent_xts_dec_16way }
- }, {
- .num_blocks = 8,
- .fn_u = { .xts = serpent_xts_dec_8way_avx }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = serpent_xts_dec }
- } }
-};
-
static int ecb_encrypt(struct skcipher_request *req)
{
return glue_ecb_req_128bit(&serpent_enc, req);
@@ -157,26 +119,6 @@ static int ctr_crypt(struct skcipher_request *req)
return glue_ctr_req_128bit(&serpent_ctr, req);
}
-static int xts_encrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&serpent_enc_xts, req,
- __serpent_encrypt, &ctx->tweak_ctx,
- &ctx->crypt_ctx, false);
-}
-
-static int xts_decrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&serpent_dec_xts, req,
- __serpent_encrypt, &ctx->tweak_ctx,
- &ctx->crypt_ctx, true);
-}
-
static struct skcipher_alg serpent_algs[] = {
{
.base.cra_name = "__ecb(serpent)",
@@ -220,20 +162,6 @@ static struct skcipher_alg serpent_algs[] = {
.setkey = serpent_setkey_skcipher,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
- }, {
- .base.cra_name = "__xts(serpent)",
- .base.cra_driver_name = "__xts-serpent-avx2",
- .base.cra_priority = 600,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = SERPENT_BLOCK_SIZE,
- .base.cra_ctxsize = sizeof(struct serpent_xts_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = 2 * SERPENT_MIN_KEY_SIZE,
- .max_keysize = 2 * SERPENT_MAX_KEY_SIZE,
- .ivsize = SERPENT_BLOCK_SIZE,
- .setkey = xts_serpent_setkey,
- .encrypt = xts_encrypt,
- .decrypt = xts_decrypt,
},
};
diff --git a/arch/x86/crypto/serpent_avx_glue.c b/arch/x86/crypto/serpent_avx_glue.c
index 7806d1cbe854..b17a08b57a91 100644
--- a/arch/x86/crypto/serpent_avx_glue.c
+++ b/arch/x86/crypto/serpent_avx_glue.c
@@ -15,7 +15,6 @@
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <crypto/serpent.h>
-#include <crypto/xts.h>
#include <asm/crypto/glue_helper.h>
#include <asm/crypto/serpent-avx.h>
@@ -36,14 +35,6 @@ asmlinkage void serpent_ctr_8way_avx(const void *ctx, u8 *dst, const u8 *src,
le128 *iv);
EXPORT_SYMBOL_GPL(serpent_ctr_8way_avx);
-asmlinkage void serpent_xts_enc_8way_avx(const void *ctx, u8 *dst,
- const u8 *src, le128 *iv);
-EXPORT_SYMBOL_GPL(serpent_xts_enc_8way_avx);
-
-asmlinkage void serpent_xts_dec_8way_avx(const void *ctx, u8 *dst,
- const u8 *src, le128 *iv);
-EXPORT_SYMBOL_GPL(serpent_xts_dec_8way_avx);
-
void __serpent_crypt_ctr(const void *ctx, u8 *d, const u8 *s, le128 *iv)
{
be128 ctrblk;
@@ -58,44 +49,12 @@ void __serpent_crypt_ctr(const void *ctx, u8 *d, const u8 *s, le128 *iv)
}
EXPORT_SYMBOL_GPL(__serpent_crypt_ctr);
-void serpent_xts_enc(const void *ctx, u8 *dst, const u8 *src, le128 *iv)
-{
- glue_xts_crypt_128bit_one(ctx, dst, src, iv, __serpent_encrypt);
-}
-EXPORT_SYMBOL_GPL(serpent_xts_enc);
-
-void serpent_xts_dec(const void *ctx, u8 *dst, const u8 *src, le128 *iv)
-{
- glue_xts_crypt_128bit_one(ctx, dst, src, iv, __serpent_decrypt);
-}
-EXPORT_SYMBOL_GPL(serpent_xts_dec);
-
static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
{
return __serpent_setkey(crypto_skcipher_ctx(tfm), key, keylen);
}
-int xts_serpent_setkey(struct crypto_skcipher *tfm, const u8 *key,
- unsigned int keylen)
-{
- struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
- int err;
-
- err = xts_verify_key(tfm, key, keylen);
- if (err)
- return err;
-
- /* first half of xts-key is for crypt */
- err = __serpent_setkey(&ctx->crypt_ctx, key, keylen / 2);
- if (err)
- return err;
-
- /* second half of xts-key is for tweak */
- return __serpent_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2);
-}
-EXPORT_SYMBOL_GPL(xts_serpent_setkey);
-
static const struct common_glue_ctx serpent_enc = {
.num_funcs = 2,
.fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
@@ -122,19 +81,6 @@ static const struct common_glue_ctx serpent_ctr = {
} }
};
-static const struct common_glue_ctx serpent_enc_xts = {
- .num_funcs = 2,
- .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .xts = serpent_xts_enc_8way_avx }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = serpent_xts_enc }
- } }
-};
-
static const struct common_glue_ctx serpent_dec = {
.num_funcs = 2,
.fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
@@ -161,19 +107,6 @@ static const struct common_glue_ctx serpent_dec_cbc = {
} }
};
-static const struct common_glue_ctx serpent_dec_xts = {
- .num_funcs = 2,
- .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .xts = serpent_xts_dec_8way_avx }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = serpent_xts_dec }
- } }
-};
-
static int ecb_encrypt(struct skcipher_request *req)
{
return glue_ecb_req_128bit(&serpent_enc, req);
@@ -199,26 +132,6 @@ static int ctr_crypt(struct skcipher_request *req)
return glue_ctr_req_128bit(&serpent_ctr, req);
}
-static int xts_encrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&serpent_enc_xts, req,
- __serpent_encrypt, &ctx->tweak_ctx,
- &ctx->crypt_ctx, false);
-}
-
-static int xts_decrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&serpent_dec_xts, req,
- __serpent_encrypt, &ctx->tweak_ctx,
- &ctx->crypt_ctx, true);
-}
-
static struct skcipher_alg serpent_algs[] = {
{
.base.cra_name = "__ecb(serpent)",
@@ -262,20 +175,6 @@ static struct skcipher_alg serpent_algs[] = {
.setkey = serpent_setkey_skcipher,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
- }, {
- .base.cra_name = "__xts(serpent)",
- .base.cra_driver_name = "__xts-serpent-avx",
- .base.cra_priority = 500,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = SERPENT_BLOCK_SIZE,
- .base.cra_ctxsize = sizeof(struct serpent_xts_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = 2 * SERPENT_MIN_KEY_SIZE,
- .max_keysize = 2 * SERPENT_MAX_KEY_SIZE,
- .ivsize = SERPENT_BLOCK_SIZE,
- .setkey = xts_serpent_setkey,
- .encrypt = xts_encrypt,
- .decrypt = xts_decrypt,
},
};
diff --git a/arch/x86/include/asm/crypto/serpent-avx.h b/arch/x86/include/asm/crypto/serpent-avx.h
index 251c2c89d7cf..23f3361a0e72 100644
--- a/arch/x86/include/asm/crypto/serpent-avx.h
+++ b/arch/x86/include/asm/crypto/serpent-avx.h
@@ -10,11 +10,6 @@ struct crypto_skcipher;
#define SERPENT_PARALLEL_BLOCKS 8
-struct serpent_xts_ctx {
- struct serpent_ctx tweak_ctx;
- struct serpent_ctx crypt_ctx;
-};
-
asmlinkage void serpent_ecb_enc_8way_avx(const void *ctx, u8 *dst,
const u8 *src);
asmlinkage void serpent_ecb_dec_8way_avx(const void *ctx, u8 *dst,
@@ -22,21 +17,5 @@ asmlinkage void serpent_ecb_dec_8way_avx(const void *ctx, u8 *dst,
asmlinkage void serpent_cbc_dec_8way_avx(const void *ctx, u8 *dst,
const u8 *src);
-asmlinkage void serpent_ctr_8way_avx(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-
-asmlinkage void serpent_xts_enc_8way_avx(const void *ctx, u8 *dst,
- const u8 *src, le128 *iv);
-asmlinkage void serpent_xts_dec_8way_avx(const void *ctx, u8 *dst,
- const u8 *src, le128 *iv);
-
-extern void __serpent_crypt_ctr(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-
-extern void serpent_xts_enc(const void *ctx, u8 *dst, const u8 *src, le128 *iv);
-extern void serpent_xts_dec(const void *ctx, u8 *dst, const u8 *src, le128 *iv);
-
-extern int xts_serpent_setkey(struct crypto_skcipher *tfm, const u8 *key,
- unsigned int keylen);
#endif
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 03e8468e57df..ce69a5ae26b5 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1576,7 +1576,7 @@ config CRYPTO_SERPENT_AVX_X86_64
select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SERPENT
select CRYPTO_SIMD
- select CRYPTO_XTS
+ imply CRYPTO_XTS
help
Serpent cipher algorithm, by Anderson, Biham & Knudsen.
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 04/21] crypto: x86/twofish - switch to XTS template
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (2 preceding siblings ...)
2021-01-05 16:47 ` [PATCH v2 03/21] crypto: x86/serpent- " Ard Biesheuvel
@ 2021-01-05 16:47 ` Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 05/21] crypto: x86/glue-helper - drop XTS helper routines Ard Biesheuvel
` (17 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:47 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Now that the XTS template can wrap accelerated ECB modes, it can be
used to implement Twofish in XTS mode as well, which turns out to
be at least as fast, and sometimes even faster
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/twofish-avx-x86_64-asm_64.S | 53 -----------
arch/x86/crypto/twofish_avx_glue.c | 98 --------------------
crypto/Kconfig | 1 +
3 files changed, 1 insertion(+), 151 deletions(-)
diff --git a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
index a5151393bb2f..84e61ef03638 100644
--- a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
+++ b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
@@ -19,11 +19,6 @@
.Lbswap128_mask:
.byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
-.section .rodata.cst16.xts_gf128mul_and_shl1_mask, "aM", @progbits, 16
-.align 16
-.Lxts_gf128mul_and_shl1_mask:
- .byte 0x87, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0
-
.text
/* structure of crypto context */
@@ -406,51 +401,3 @@ SYM_FUNC_START(twofish_ctr_8way)
FRAME_END
ret;
SYM_FUNC_END(twofish_ctr_8way)
-
-SYM_FUNC_START(twofish_xts_enc_8way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst
- * %rdx: src
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- */
- FRAME_BEGIN
-
- movq %rsi, %r11;
-
- /* regs <= src, dst <= IVs, regs <= regs xor IVs */
- load_xts_8way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2,
- RX0, RX1, RY0, .Lxts_gf128mul_and_shl1_mask);
-
- call __twofish_enc_blk8;
-
- /* dst <= regs xor IVs(in dst) */
- store_xts_8way(%r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
-
- FRAME_END
- ret;
-SYM_FUNC_END(twofish_xts_enc_8way)
-
-SYM_FUNC_START(twofish_xts_dec_8way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst
- * %rdx: src
- * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
- */
- FRAME_BEGIN
-
- movq %rsi, %r11;
-
- /* regs <= src, dst <= IVs, regs <= regs xor IVs */
- load_xts_8way(%rcx, %rdx, %rsi, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2,
- RX0, RX1, RY0, .Lxts_gf128mul_and_shl1_mask);
-
- call __twofish_dec_blk8;
-
- /* dst <= regs xor IVs(in dst) */
- store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
-
- FRAME_END
- ret;
-SYM_FUNC_END(twofish_xts_dec_8way)
diff --git a/arch/x86/crypto/twofish_avx_glue.c b/arch/x86/crypto/twofish_avx_glue.c
index 2dbc8ce3730e..7b539bbb108f 100644
--- a/arch/x86/crypto/twofish_avx_glue.c
+++ b/arch/x86/crypto/twofish_avx_glue.c
@@ -15,7 +15,6 @@
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <crypto/twofish.h>
-#include <crypto/xts.h>
#include <asm/crypto/glue_helper.h>
#include <asm/crypto/twofish.h>
@@ -29,11 +28,6 @@ asmlinkage void twofish_cbc_dec_8way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void twofish_ctr_8way(const void *ctx, u8 *dst, const u8 *src,
le128 *iv);
-asmlinkage void twofish_xts_enc_8way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-asmlinkage void twofish_xts_dec_8way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-
static int twofish_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
{
@@ -45,40 +39,6 @@ static inline void twofish_enc_blk_3way(const void *ctx, u8 *dst, const u8 *src)
__twofish_enc_blk_3way(ctx, dst, src, false);
}
-static void twofish_xts_enc(const void *ctx, u8 *dst, const u8 *src, le128 *iv)
-{
- glue_xts_crypt_128bit_one(ctx, dst, src, iv, twofish_enc_blk);
-}
-
-static void twofish_xts_dec(const void *ctx, u8 *dst, const u8 *src, le128 *iv)
-{
- glue_xts_crypt_128bit_one(ctx, dst, src, iv, twofish_dec_blk);
-}
-
-struct twofish_xts_ctx {
- struct twofish_ctx tweak_ctx;
- struct twofish_ctx crypt_ctx;
-};
-
-static int xts_twofish_setkey(struct crypto_skcipher *tfm, const u8 *key,
- unsigned int keylen)
-{
- struct twofish_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
- int err;
-
- err = xts_verify_key(tfm, key, keylen);
- if (err)
- return err;
-
- /* first half of xts-key is for crypt */
- err = __twofish_setkey(&ctx->crypt_ctx, key, keylen / 2);
- if (err)
- return err;
-
- /* second half of xts-key is for tweak */
- return __twofish_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2);
-}
-
static const struct common_glue_ctx twofish_enc = {
.num_funcs = 3,
.fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
@@ -111,19 +71,6 @@ static const struct common_glue_ctx twofish_ctr = {
} }
};
-static const struct common_glue_ctx twofish_enc_xts = {
- .num_funcs = 2,
- .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = TWOFISH_PARALLEL_BLOCKS,
- .fn_u = { .xts = twofish_xts_enc_8way }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = twofish_xts_enc }
- } }
-};
-
static const struct common_glue_ctx twofish_dec = {
.num_funcs = 3,
.fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
@@ -156,19 +103,6 @@ static const struct common_glue_ctx twofish_dec_cbc = {
} }
};
-static const struct common_glue_ctx twofish_dec_xts = {
- .num_funcs = 2,
- .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = TWOFISH_PARALLEL_BLOCKS,
- .fn_u = { .xts = twofish_xts_dec_8way }
- }, {
- .num_blocks = 1,
- .fn_u = { .xts = twofish_xts_dec }
- } }
-};
-
static int ecb_encrypt(struct skcipher_request *req)
{
return glue_ecb_req_128bit(&twofish_enc, req);
@@ -194,24 +128,6 @@ static int ctr_crypt(struct skcipher_request *req)
return glue_ctr_req_128bit(&twofish_ctr, req);
}
-static int xts_encrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct twofish_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&twofish_enc_xts, req, twofish_enc_blk,
- &ctx->tweak_ctx, &ctx->crypt_ctx, false);
-}
-
-static int xts_decrypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct twofish_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
- return glue_xts_req_128bit(&twofish_dec_xts, req, twofish_enc_blk,
- &ctx->tweak_ctx, &ctx->crypt_ctx, true);
-}
-
static struct skcipher_alg twofish_algs[] = {
{
.base.cra_name = "__ecb(twofish)",
@@ -255,20 +171,6 @@ static struct skcipher_alg twofish_algs[] = {
.setkey = twofish_setkey_skcipher,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
- }, {
- .base.cra_name = "__xts(twofish)",
- .base.cra_driver_name = "__xts-twofish-avx",
- .base.cra_priority = 400,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = TF_BLOCK_SIZE,
- .base.cra_ctxsize = sizeof(struct twofish_xts_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = 2 * TF_MIN_KEY_SIZE,
- .max_keysize = 2 * TF_MAX_KEY_SIZE,
- .ivsize = TF_BLOCK_SIZE,
- .setkey = xts_twofish_setkey,
- .encrypt = xts_encrypt,
- .decrypt = xts_decrypt,
},
};
diff --git a/crypto/Kconfig b/crypto/Kconfig
index ce69a5ae26b5..7ad9bf84f4a0 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1731,6 +1731,7 @@ config CRYPTO_TWOFISH_AVX_X86_64
select CRYPTO_TWOFISH_COMMON
select CRYPTO_TWOFISH_X86_64
select CRYPTO_TWOFISH_X86_64_3WAY
+ imply CRYPTO_XTS
help
Twofish cipher algorithm (x86_64/AVX).
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 05/21] crypto: x86/glue-helper - drop XTS helper routines
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (3 preceding siblings ...)
2021-01-05 16:47 ` [PATCH v2 04/21] crypto: x86/twofish - " Ard Biesheuvel
@ 2021-01-05 16:47 ` Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 06/21] crypto: x86/camellia - drop CTR mode implementation Ard Biesheuvel
` (16 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:47 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
The glue helper's XTS routines are no longer used, so drop them.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/glue_helper-asm-avx.S | 59 --------
arch/x86/crypto/glue_helper-asm-avx2.S | 78 ----------
arch/x86/crypto/glue_helper.c | 154 --------------------
arch/x86/include/asm/crypto/glue_helper.h | 12 --
4 files changed, 303 deletions(-)
diff --git a/arch/x86/crypto/glue_helper-asm-avx.S b/arch/x86/crypto/glue_helper-asm-avx.S
index d08fc575ef7f..a94511432803 100644
--- a/arch/x86/crypto/glue_helper-asm-avx.S
+++ b/arch/x86/crypto/glue_helper-asm-avx.S
@@ -79,62 +79,3 @@
vpxor (6*16)(src), x6, x6; \
vpxor (7*16)(src), x7, x7; \
store_8way(dst, x0, x1, x2, x3, x4, x5, x6, x7);
-
-#define gf128mul_x_ble(iv, mask, tmp) \
- vpsrad $31, iv, tmp; \
- vpaddq iv, iv, iv; \
- vpshufd $0x13, tmp, tmp; \
- vpand mask, tmp, tmp; \
- vpxor tmp, iv, iv;
-
-#define load_xts_8way(iv, src, dst, x0, x1, x2, x3, x4, x5, x6, x7, tiv, t0, \
- t1, xts_gf128mul_and_shl1_mask) \
- vmovdqa xts_gf128mul_and_shl1_mask, t0; \
- \
- /* load IV */ \
- vmovdqu (iv), tiv; \
- vpxor (0*16)(src), tiv, x0; \
- vmovdqu tiv, (0*16)(dst); \
- \
- /* construct and store IVs, also xor with source */ \
- gf128mul_x_ble(tiv, t0, t1); \
- vpxor (1*16)(src), tiv, x1; \
- vmovdqu tiv, (1*16)(dst); \
- \
- gf128mul_x_ble(tiv, t0, t1); \
- vpxor (2*16)(src), tiv, x2; \
- vmovdqu tiv, (2*16)(dst); \
- \
- gf128mul_x_ble(tiv, t0, t1); \
- vpxor (3*16)(src), tiv, x3; \
- vmovdqu tiv, (3*16)(dst); \
- \
- gf128mul_x_ble(tiv, t0, t1); \
- vpxor (4*16)(src), tiv, x4; \
- vmovdqu tiv, (4*16)(dst); \
- \
- gf128mul_x_ble(tiv, t0, t1); \
- vpxor (5*16)(src), tiv, x5; \
- vmovdqu tiv, (5*16)(dst); \
- \
- gf128mul_x_ble(tiv, t0, t1); \
- vpxor (6*16)(src), tiv, x6; \
- vmovdqu tiv, (6*16)(dst); \
- \
- gf128mul_x_ble(tiv, t0, t1); \
- vpxor (7*16)(src), tiv, x7; \
- vmovdqu tiv, (7*16)(dst); \
- \
- gf128mul_x_ble(tiv, t0, t1); \
- vmovdqu tiv, (iv);
-
-#define store_xts_8way(dst, x0, x1, x2, x3, x4, x5, x6, x7) \
- vpxor (0*16)(dst), x0, x0; \
- vpxor (1*16)(dst), x1, x1; \
- vpxor (2*16)(dst), x2, x2; \
- vpxor (3*16)(dst), x3, x3; \
- vpxor (4*16)(dst), x4, x4; \
- vpxor (5*16)(dst), x5, x5; \
- vpxor (6*16)(dst), x6, x6; \
- vpxor (7*16)(dst), x7, x7; \
- store_8way(dst, x0, x1, x2, x3, x4, x5, x6, x7);
diff --git a/arch/x86/crypto/glue_helper-asm-avx2.S b/arch/x86/crypto/glue_helper-asm-avx2.S
index d84508c85c13..456bface1e5d 100644
--- a/arch/x86/crypto/glue_helper-asm-avx2.S
+++ b/arch/x86/crypto/glue_helper-asm-avx2.S
@@ -95,81 +95,3 @@
vpxor (6*32)(src), x6, x6; \
vpxor (7*32)(src), x7, x7; \
store_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7);
-
-#define gf128mul_x_ble(iv, mask, tmp) \
- vpsrad $31, iv, tmp; \
- vpaddq iv, iv, iv; \
- vpshufd $0x13, tmp, tmp; \
- vpand mask, tmp, tmp; \
- vpxor tmp, iv, iv;
-
-#define gf128mul_x2_ble(iv, mask1, mask2, tmp0, tmp1) \
- vpsrad $31, iv, tmp0; \
- vpaddq iv, iv, tmp1; \
- vpsllq $2, iv, iv; \
- vpshufd $0x13, tmp0, tmp0; \
- vpsrad $31, tmp1, tmp1; \
- vpand mask2, tmp0, tmp0; \
- vpshufd $0x13, tmp1, tmp1; \
- vpxor tmp0, iv, iv; \
- vpand mask1, tmp1, tmp1; \
- vpxor tmp1, iv, iv;
-
-#define load_xts_16way(iv, src, dst, x0, x1, x2, x3, x4, x5, x6, x7, tiv, \
- tivx, t0, t0x, t1, t1x, t2, t2x, t3, \
- xts_gf128mul_and_shl1_mask_0, \
- xts_gf128mul_and_shl1_mask_1) \
- vbroadcasti128 xts_gf128mul_and_shl1_mask_0, t1; \
- \
- /* load IV and construct second IV */ \
- vmovdqu (iv), tivx; \
- vmovdqa tivx, t0x; \
- gf128mul_x_ble(tivx, t1x, t2x); \
- vbroadcasti128 xts_gf128mul_and_shl1_mask_1, t2; \
- vinserti128 $1, tivx, t0, tiv; \
- vpxor (0*32)(src), tiv, x0; \
- vmovdqu tiv, (0*32)(dst); \
- \
- /* construct and store IVs, also xor with source */ \
- gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
- vpxor (1*32)(src), tiv, x1; \
- vmovdqu tiv, (1*32)(dst); \
- \
- gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
- vpxor (2*32)(src), tiv, x2; \
- vmovdqu tiv, (2*32)(dst); \
- \
- gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
- vpxor (3*32)(src), tiv, x3; \
- vmovdqu tiv, (3*32)(dst); \
- \
- gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
- vpxor (4*32)(src), tiv, x4; \
- vmovdqu tiv, (4*32)(dst); \
- \
- gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
- vpxor (5*32)(src), tiv, x5; \
- vmovdqu tiv, (5*32)(dst); \
- \
- gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
- vpxor (6*32)(src), tiv, x6; \
- vmovdqu tiv, (6*32)(dst); \
- \
- gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
- vpxor (7*32)(src), tiv, x7; \
- vmovdqu tiv, (7*32)(dst); \
- \
- vextracti128 $1, tiv, tivx; \
- gf128mul_x_ble(tivx, t1x, t2x); \
- vmovdqu tivx, (iv);
-
-#define store_xts_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7) \
- vpxor (0*32)(dst), x0, x0; \
- vpxor (1*32)(dst), x1, x1; \
- vpxor (2*32)(dst), x2, x2; \
- vpxor (3*32)(dst), x3, x3; \
- vpxor (4*32)(dst), x4, x4; \
- vpxor (5*32)(dst), x5, x5; \
- vpxor (6*32)(dst), x6, x6; \
- vpxor (7*32)(dst), x7, x7; \
- store_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7);
diff --git a/arch/x86/crypto/glue_helper.c b/arch/x86/crypto/glue_helper.c
index d3d91a0abf88..786ffda1caf4 100644
--- a/arch/x86/crypto/glue_helper.c
+++ b/arch/x86/crypto/glue_helper.c
@@ -12,10 +12,8 @@
#include <linux/module.h>
#include <crypto/b128ops.h>
-#include <crypto/gf128mul.h>
#include <crypto/internal/skcipher.h>
#include <crypto/scatterwalk.h>
-#include <crypto/xts.h>
#include <asm/crypto/glue_helper.h>
int glue_ecb_req_128bit(const struct common_glue_ctx *gctx,
@@ -226,156 +224,4 @@ int glue_ctr_req_128bit(const struct common_glue_ctx *gctx,
}
EXPORT_SYMBOL_GPL(glue_ctr_req_128bit);
-static unsigned int __glue_xts_req_128bit(const struct common_glue_ctx *gctx,
- void *ctx,
- struct skcipher_walk *walk)
-{
- const unsigned int bsize = 128 / 8;
- unsigned int nbytes = walk->nbytes;
- u128 *src = walk->src.virt.addr;
- u128 *dst = walk->dst.virt.addr;
- unsigned int num_blocks, func_bytes;
- unsigned int i;
-
- /* Process multi-block batch */
- for (i = 0; i < gctx->num_funcs; i++) {
- num_blocks = gctx->funcs[i].num_blocks;
- func_bytes = bsize * num_blocks;
-
- if (nbytes >= func_bytes) {
- do {
- gctx->funcs[i].fn_u.xts(ctx, (u8 *)dst,
- (const u8 *)src,
- walk->iv);
-
- src += num_blocks;
- dst += num_blocks;
- nbytes -= func_bytes;
- } while (nbytes >= func_bytes);
-
- if (nbytes < bsize)
- goto done;
- }
- }
-
-done:
- return nbytes;
-}
-
-int glue_xts_req_128bit(const struct common_glue_ctx *gctx,
- struct skcipher_request *req,
- common_glue_func_t tweak_fn, void *tweak_ctx,
- void *crypt_ctx, bool decrypt)
-{
- const bool cts = (req->cryptlen % XTS_BLOCK_SIZE);
- const unsigned int bsize = 128 / 8;
- struct skcipher_request subreq;
- struct skcipher_walk walk;
- bool fpu_enabled = false;
- unsigned int nbytes, tail;
- int err;
-
- if (req->cryptlen < XTS_BLOCK_SIZE)
- return -EINVAL;
-
- if (unlikely(cts)) {
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
-
- tail = req->cryptlen % XTS_BLOCK_SIZE + XTS_BLOCK_SIZE;
-
- skcipher_request_set_tfm(&subreq, tfm);
- skcipher_request_set_callback(&subreq,
- crypto_skcipher_get_flags(tfm),
- NULL, NULL);
- skcipher_request_set_crypt(&subreq, req->src, req->dst,
- req->cryptlen - tail, req->iv);
- req = &subreq;
- }
-
- err = skcipher_walk_virt(&walk, req, false);
- nbytes = walk.nbytes;
- if (err)
- return err;
-
- /* set minimum length to bsize, for tweak_fn */
- fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
- &walk, fpu_enabled,
- nbytes < bsize ? bsize : nbytes);
-
- /* calculate first value of T */
- tweak_fn(tweak_ctx, walk.iv, walk.iv);
-
- while (nbytes) {
- nbytes = __glue_xts_req_128bit(gctx, crypt_ctx, &walk);
-
- err = skcipher_walk_done(&walk, nbytes);
- nbytes = walk.nbytes;
- }
-
- if (unlikely(cts)) {
- u8 *next_tweak, *final_tweak = req->iv;
- struct scatterlist *src, *dst;
- struct scatterlist s[2], d[2];
- le128 b[2];
-
- dst = src = scatterwalk_ffwd(s, req->src, req->cryptlen);
- if (req->dst != req->src)
- dst = scatterwalk_ffwd(d, req->dst, req->cryptlen);
-
- if (decrypt) {
- next_tweak = memcpy(b, req->iv, XTS_BLOCK_SIZE);
- gf128mul_x_ble(b, b);
- } else {
- next_tweak = req->iv;
- }
-
- skcipher_request_set_crypt(&subreq, src, dst, XTS_BLOCK_SIZE,
- next_tweak);
-
- err = skcipher_walk_virt(&walk, req, false) ?:
- skcipher_walk_done(&walk,
- __glue_xts_req_128bit(gctx, crypt_ctx, &walk));
- if (err)
- goto out;
-
- scatterwalk_map_and_copy(b, dst, 0, XTS_BLOCK_SIZE, 0);
- memcpy(b + 1, b, tail - XTS_BLOCK_SIZE);
- scatterwalk_map_and_copy(b, src, XTS_BLOCK_SIZE,
- tail - XTS_BLOCK_SIZE, 0);
- scatterwalk_map_and_copy(b, dst, 0, tail, 1);
-
- skcipher_request_set_crypt(&subreq, dst, dst, XTS_BLOCK_SIZE,
- final_tweak);
-
- err = skcipher_walk_virt(&walk, req, false) ?:
- skcipher_walk_done(&walk,
- __glue_xts_req_128bit(gctx, crypt_ctx, &walk));
- }
-
-out:
- glue_fpu_end(fpu_enabled);
-
- return err;
-}
-EXPORT_SYMBOL_GPL(glue_xts_req_128bit);
-
-void glue_xts_crypt_128bit_one(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv, common_glue_func_t fn)
-{
- le128 ivblk = *iv;
-
- /* generate next IV */
- gf128mul_x_ble(iv, &ivblk);
-
- /* CC <- T xor C */
- u128_xor((u128 *)dst, (const u128 *)src, (u128 *)&ivblk);
-
- /* PP <- D(Key2,CC) */
- fn(ctx, dst, dst);
-
- /* P <- T xor PP */
- u128_xor((u128 *)dst, (u128 *)dst, (u128 *)&ivblk);
-}
-EXPORT_SYMBOL_GPL(glue_xts_crypt_128bit_one);
-
MODULE_LICENSE("GPL");
diff --git a/arch/x86/include/asm/crypto/glue_helper.h b/arch/x86/include/asm/crypto/glue_helper.h
index 777c0f63418c..62680775d189 100644
--- a/arch/x86/include/asm/crypto/glue_helper.h
+++ b/arch/x86/include/asm/crypto/glue_helper.h
@@ -15,8 +15,6 @@ typedef void (*common_glue_func_t)(const void *ctx, u8 *dst, const u8 *src);
typedef void (*common_glue_cbc_func_t)(const void *ctx, u8 *dst, const u8 *src);
typedef void (*common_glue_ctr_func_t)(const void *ctx, u8 *dst, const u8 *src,
le128 *iv);
-typedef void (*common_glue_xts_func_t)(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
struct common_glue_func_entry {
unsigned int num_blocks; /* number of blocks that @fn will process */
@@ -24,7 +22,6 @@ struct common_glue_func_entry {
common_glue_func_t ecb;
common_glue_cbc_func_t cbc;
common_glue_ctr_func_t ctr;
- common_glue_xts_func_t xts;
} fn_u;
};
@@ -106,13 +103,4 @@ extern int glue_cbc_decrypt_req_128bit(const struct common_glue_ctx *gctx,
extern int glue_ctr_req_128bit(const struct common_glue_ctx *gctx,
struct skcipher_request *req);
-extern int glue_xts_req_128bit(const struct common_glue_ctx *gctx,
- struct skcipher_request *req,
- common_glue_func_t tweak_fn, void *tweak_ctx,
- void *crypt_ctx, bool decrypt);
-
-extern void glue_xts_crypt_128bit_one(const void *ctx, u8 *dst,
- const u8 *src, le128 *iv,
- common_glue_func_t fn);
-
#endif /* _CRYPTO_GLUE_HELPER_H */
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 06/21] crypto: x86/camellia - drop CTR mode implementation
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (4 preceding siblings ...)
2021-01-05 16:47 ` [PATCH v2 05/21] crypto: x86/glue-helper - drop XTS helper routines Ard Biesheuvel
@ 2021-01-05 16:47 ` Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 07/21] crypto: x86/serpent " Ard Biesheuvel
` (15 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:47 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Camellia in CTR mode is never used by the kernel directly, and is highly
unlikely to be relied upon by dm-crypt or algif_skcipher. So let's drop
the accelerated CTR mode implementation, and instead, rely on the CTR
template and the bare cipher.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/camellia-aesni-avx-asm_64.S | 117 ----------------
arch/x86/crypto/camellia-aesni-avx2-asm_64.S | 144 --------------------
arch/x86/crypto/camellia_aesni_avx2_glue.c | 41 ------
arch/x86/crypto/camellia_aesni_avx_glue.c | 40 ------
arch/x86/crypto/camellia_glue.c | 68 ---------
arch/x86/include/asm/crypto/camellia.h | 6 -
crypto/Kconfig | 1 +
7 files changed, 1 insertion(+), 416 deletions(-)
diff --git a/arch/x86/crypto/camellia-aesni-avx-asm_64.S b/arch/x86/crypto/camellia-aesni-avx-asm_64.S
index 471c34e6cac2..e2a0e0f4bf9d 100644
--- a/arch/x86/crypto/camellia-aesni-avx-asm_64.S
+++ b/arch/x86/crypto/camellia-aesni-avx-asm_64.S
@@ -588,10 +588,6 @@ SYM_FUNC_END(roundsm16_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab)
.long 0x80808080
.long 0x80808080
-/* For CTR-mode IV byteswap */
-.Lbswap128_mask:
- .byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
-
/*
* pre-SubByte transform
*
@@ -993,116 +989,3 @@ SYM_FUNC_START(camellia_cbc_dec_16way)
FRAME_END
ret;
SYM_FUNC_END(camellia_cbc_dec_16way)
-
-#define inc_le128(x, minus_one, tmp) \
- vpcmpeqq minus_one, x, tmp; \
- vpsubq minus_one, x, x; \
- vpslldq $8, tmp, tmp; \
- vpsubq tmp, x, x;
-
-SYM_FUNC_START(camellia_ctr_16way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst (16 blocks)
- * %rdx: src (16 blocks)
- * %rcx: iv (little endian, 128bit)
- */
- FRAME_BEGIN
-
- subq $(16 * 16), %rsp;
- movq %rsp, %rax;
-
- vmovdqa .Lbswap128_mask, %xmm14;
-
- /* load IV and byteswap */
- vmovdqu (%rcx), %xmm0;
- vpshufb %xmm14, %xmm0, %xmm15;
- vmovdqu %xmm15, 15 * 16(%rax);
-
- vpcmpeqd %xmm15, %xmm15, %xmm15;
- vpsrldq $8, %xmm15, %xmm15; /* low: -1, high: 0 */
-
- /* construct IVs */
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm13;
- vmovdqu %xmm13, 14 * 16(%rax);
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm13;
- vmovdqu %xmm13, 13 * 16(%rax);
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm12;
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm11;
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm10;
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm9;
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm8;
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm7;
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm6;
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm5;
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm4;
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm3;
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm2;
- inc_le128(%xmm0, %xmm15, %xmm13);
- vpshufb %xmm14, %xmm0, %xmm1;
- inc_le128(%xmm0, %xmm15, %xmm13);
- vmovdqa %xmm0, %xmm13;
- vpshufb %xmm14, %xmm0, %xmm0;
- inc_le128(%xmm13, %xmm15, %xmm14);
- vmovdqu %xmm13, (%rcx);
-
- /* inpack16_pre: */
- vmovq (key_table)(CTX), %xmm15;
- vpshufb .Lpack_bswap, %xmm15, %xmm15;
- vpxor %xmm0, %xmm15, %xmm0;
- vpxor %xmm1, %xmm15, %xmm1;
- vpxor %xmm2, %xmm15, %xmm2;
- vpxor %xmm3, %xmm15, %xmm3;
- vpxor %xmm4, %xmm15, %xmm4;
- vpxor %xmm5, %xmm15, %xmm5;
- vpxor %xmm6, %xmm15, %xmm6;
- vpxor %xmm7, %xmm15, %xmm7;
- vpxor %xmm8, %xmm15, %xmm8;
- vpxor %xmm9, %xmm15, %xmm9;
- vpxor %xmm10, %xmm15, %xmm10;
- vpxor %xmm11, %xmm15, %xmm11;
- vpxor %xmm12, %xmm15, %xmm12;
- vpxor 13 * 16(%rax), %xmm15, %xmm13;
- vpxor 14 * 16(%rax), %xmm15, %xmm14;
- vpxor 15 * 16(%rax), %xmm15, %xmm15;
-
- call __camellia_enc_blk16;
-
- addq $(16 * 16), %rsp;
-
- vpxor 0 * 16(%rdx), %xmm7, %xmm7;
- vpxor 1 * 16(%rdx), %xmm6, %xmm6;
- vpxor 2 * 16(%rdx), %xmm5, %xmm5;
- vpxor 3 * 16(%rdx), %xmm4, %xmm4;
- vpxor 4 * 16(%rdx), %xmm3, %xmm3;
- vpxor 5 * 16(%rdx), %xmm2, %xmm2;
- vpxor 6 * 16(%rdx), %xmm1, %xmm1;
- vpxor 7 * 16(%rdx), %xmm0, %xmm0;
- vpxor 8 * 16(%rdx), %xmm15, %xmm15;
- vpxor 9 * 16(%rdx), %xmm14, %xmm14;
- vpxor 10 * 16(%rdx), %xmm13, %xmm13;
- vpxor 11 * 16(%rdx), %xmm12, %xmm12;
- vpxor 12 * 16(%rdx), %xmm11, %xmm11;
- vpxor 13 * 16(%rdx), %xmm10, %xmm10;
- vpxor 14 * 16(%rdx), %xmm9, %xmm9;
- vpxor 15 * 16(%rdx), %xmm8, %xmm8;
- write_output(%xmm7, %xmm6, %xmm5, %xmm4, %xmm3, %xmm2, %xmm1, %xmm0,
- %xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
- %xmm8, %rsi);
-
- FRAME_END
- ret;
-SYM_FUNC_END(camellia_ctr_16way)
diff --git a/arch/x86/crypto/camellia-aesni-avx2-asm_64.S b/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
index 9561dee52de0..782e9712a1ec 100644
--- a/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
+++ b/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
@@ -624,10 +624,6 @@ SYM_FUNC_END(roundsm32_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab)
.section .rodata.cst16, "aM", @progbits, 16
.align 16
-/* For CTR-mode IV byteswap */
-.Lbswap128_mask:
- .byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
-
/*
* pre-SubByte transform
*
@@ -1054,143 +1050,3 @@ SYM_FUNC_START(camellia_cbc_dec_32way)
FRAME_END
ret;
SYM_FUNC_END(camellia_cbc_dec_32way)
-
-#define inc_le128(x, minus_one, tmp) \
- vpcmpeqq minus_one, x, tmp; \
- vpsubq minus_one, x, x; \
- vpslldq $8, tmp, tmp; \
- vpsubq tmp, x, x;
-
-#define add2_le128(x, minus_one, minus_two, tmp1, tmp2) \
- vpcmpeqq minus_one, x, tmp1; \
- vpcmpeqq minus_two, x, tmp2; \
- vpsubq minus_two, x, x; \
- vpor tmp2, tmp1, tmp1; \
- vpslldq $8, tmp1, tmp1; \
- vpsubq tmp1, x, x;
-
-SYM_FUNC_START(camellia_ctr_32way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst (32 blocks)
- * %rdx: src (32 blocks)
- * %rcx: iv (little endian, 128bit)
- */
- FRAME_BEGIN
-
- vzeroupper;
-
- movq %rsp, %r10;
- cmpq %rsi, %rdx;
- je .Lctr_use_stack;
-
- /* dst can be used as temporary storage, src is not overwritten. */
- movq %rsi, %rax;
- jmp .Lctr_continue;
-
-.Lctr_use_stack:
- subq $(16 * 32), %rsp;
- movq %rsp, %rax;
-
-.Lctr_continue:
- vpcmpeqd %ymm15, %ymm15, %ymm15;
- vpsrldq $8, %ymm15, %ymm15; /* ab: -1:0 ; cd: -1:0 */
- vpaddq %ymm15, %ymm15, %ymm12; /* ab: -2:0 ; cd: -2:0 */
-
- /* load IV and byteswap */
- vmovdqu (%rcx), %xmm0;
- vmovdqa %xmm0, %xmm1;
- inc_le128(%xmm0, %xmm15, %xmm14);
- vbroadcasti128 .Lbswap128_mask, %ymm14;
- vinserti128 $1, %xmm0, %ymm1, %ymm0;
- vpshufb %ymm14, %ymm0, %ymm13;
- vmovdqu %ymm13, 15 * 32(%rax);
-
- /* construct IVs */
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13); /* ab:le2 ; cd:le3 */
- vpshufb %ymm14, %ymm0, %ymm13;
- vmovdqu %ymm13, 14 * 32(%rax);
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm13;
- vmovdqu %ymm13, 13 * 32(%rax);
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm13;
- vmovdqu %ymm13, 12 * 32(%rax);
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm13;
- vmovdqu %ymm13, 11 * 32(%rax);
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm10;
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm9;
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm8;
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm7;
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm6;
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm5;
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm4;
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm3;
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm2;
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vpshufb %ymm14, %ymm0, %ymm1;
- add2_le128(%ymm0, %ymm15, %ymm12, %ymm11, %ymm13);
- vextracti128 $1, %ymm0, %xmm13;
- vpshufb %ymm14, %ymm0, %ymm0;
- inc_le128(%xmm13, %xmm15, %xmm14);
- vmovdqu %xmm13, (%rcx);
-
- /* inpack32_pre: */
- vpbroadcastq (key_table)(CTX), %ymm15;
- vpshufb .Lpack_bswap, %ymm15, %ymm15;
- vpxor %ymm0, %ymm15, %ymm0;
- vpxor %ymm1, %ymm15, %ymm1;
- vpxor %ymm2, %ymm15, %ymm2;
- vpxor %ymm3, %ymm15, %ymm3;
- vpxor %ymm4, %ymm15, %ymm4;
- vpxor %ymm5, %ymm15, %ymm5;
- vpxor %ymm6, %ymm15, %ymm6;
- vpxor %ymm7, %ymm15, %ymm7;
- vpxor %ymm8, %ymm15, %ymm8;
- vpxor %ymm9, %ymm15, %ymm9;
- vpxor %ymm10, %ymm15, %ymm10;
- vpxor 11 * 32(%rax), %ymm15, %ymm11;
- vpxor 12 * 32(%rax), %ymm15, %ymm12;
- vpxor 13 * 32(%rax), %ymm15, %ymm13;
- vpxor 14 * 32(%rax), %ymm15, %ymm14;
- vpxor 15 * 32(%rax), %ymm15, %ymm15;
-
- call __camellia_enc_blk32;
-
- movq %r10, %rsp;
-
- vpxor 0 * 32(%rdx), %ymm7, %ymm7;
- vpxor 1 * 32(%rdx), %ymm6, %ymm6;
- vpxor 2 * 32(%rdx), %ymm5, %ymm5;
- vpxor 3 * 32(%rdx), %ymm4, %ymm4;
- vpxor 4 * 32(%rdx), %ymm3, %ymm3;
- vpxor 5 * 32(%rdx), %ymm2, %ymm2;
- vpxor 6 * 32(%rdx), %ymm1, %ymm1;
- vpxor 7 * 32(%rdx), %ymm0, %ymm0;
- vpxor 8 * 32(%rdx), %ymm15, %ymm15;
- vpxor 9 * 32(%rdx), %ymm14, %ymm14;
- vpxor 10 * 32(%rdx), %ymm13, %ymm13;
- vpxor 11 * 32(%rdx), %ymm12, %ymm12;
- vpxor 12 * 32(%rdx), %ymm11, %ymm11;
- vpxor 13 * 32(%rdx), %ymm10, %ymm10;
- vpxor 14 * 32(%rdx), %ymm9, %ymm9;
- vpxor 15 * 32(%rdx), %ymm8, %ymm8;
- write_output(%ymm7, %ymm6, %ymm5, %ymm4, %ymm3, %ymm2, %ymm1, %ymm0,
- %ymm15, %ymm14, %ymm13, %ymm12, %ymm11, %ymm10, %ymm9,
- %ymm8, %rsi);
-
- vzeroupper;
-
- FRAME_END
- ret;
-SYM_FUNC_END(camellia_ctr_32way)
diff --git a/arch/x86/crypto/camellia_aesni_avx2_glue.c b/arch/x86/crypto/camellia_aesni_avx2_glue.c
index d956d0473668..8f25a2a6222e 100644
--- a/arch/x86/crypto/camellia_aesni_avx2_glue.c
+++ b/arch/x86/crypto/camellia_aesni_avx2_glue.c
@@ -22,8 +22,6 @@ asmlinkage void camellia_ecb_enc_32way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void camellia_ecb_dec_32way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void camellia_cbc_dec_32way(const void *ctx, u8 *dst, const u8 *src);
-asmlinkage void camellia_ctr_32way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
static const struct common_glue_ctx camellia_enc = {
.num_funcs = 4,
@@ -44,25 +42,6 @@ static const struct common_glue_ctx camellia_enc = {
} }
};
-static const struct common_glue_ctx camellia_ctr = {
- .num_funcs = 4,
- .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
- .fn_u = { .ctr = camellia_ctr_32way }
- }, {
- .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
- .fn_u = { .ctr = camellia_ctr_16way }
- }, {
- .num_blocks = 2,
- .fn_u = { .ctr = camellia_crypt_ctr_2way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ctr = camellia_crypt_ctr }
- } }
-};
-
static const struct common_glue_ctx camellia_dec = {
.num_funcs = 4,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
@@ -127,11 +106,6 @@ static int cbc_decrypt(struct skcipher_request *req)
return glue_cbc_decrypt_req_128bit(&camellia_dec_cbc, req);
}
-static int ctr_crypt(struct skcipher_request *req)
-{
- return glue_ctr_req_128bit(&camellia_ctr, req);
-}
-
static struct skcipher_alg camellia_algs[] = {
{
.base.cra_name = "__ecb(camellia)",
@@ -160,21 +134,6 @@ static struct skcipher_alg camellia_algs[] = {
.setkey = camellia_setkey,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "__ctr(camellia)",
- .base.cra_driver_name = "__ctr-camellia-aesni-avx2",
- .base.cra_priority = 500,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct camellia_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = CAMELLIA_MIN_KEY_SIZE,
- .max_keysize = CAMELLIA_MAX_KEY_SIZE,
- .ivsize = CAMELLIA_BLOCK_SIZE,
- .chunksize = CAMELLIA_BLOCK_SIZE,
- .setkey = camellia_setkey,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
},
};
diff --git a/arch/x86/crypto/camellia_aesni_avx_glue.c b/arch/x86/crypto/camellia_aesni_avx_glue.c
index 44614f8a452c..22a89cdfedfb 100644
--- a/arch/x86/crypto/camellia_aesni_avx_glue.c
+++ b/arch/x86/crypto/camellia_aesni_avx_glue.c
@@ -26,10 +26,6 @@ EXPORT_SYMBOL_GPL(camellia_ecb_dec_16way);
asmlinkage void camellia_cbc_dec_16way(const void *ctx, u8 *dst, const u8 *src);
EXPORT_SYMBOL_GPL(camellia_cbc_dec_16way);
-asmlinkage void camellia_ctr_16way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-EXPORT_SYMBOL_GPL(camellia_ctr_16way);
-
static const struct common_glue_ctx camellia_enc = {
.num_funcs = 3,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
@@ -46,22 +42,6 @@ static const struct common_glue_ctx camellia_enc = {
} }
};
-static const struct common_glue_ctx camellia_ctr = {
- .num_funcs = 3,
- .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
- .fn_u = { .ctr = camellia_ctr_16way }
- }, {
- .num_blocks = 2,
- .fn_u = { .ctr = camellia_crypt_ctr_2way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ctr = camellia_crypt_ctr }
- } }
-};
-
static const struct common_glue_ctx camellia_dec = {
.num_funcs = 3,
.fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
@@ -120,11 +100,6 @@ static int cbc_decrypt(struct skcipher_request *req)
return glue_cbc_decrypt_req_128bit(&camellia_dec_cbc, req);
}
-static int ctr_crypt(struct skcipher_request *req)
-{
- return glue_ctr_req_128bit(&camellia_ctr, req);
-}
-
static struct skcipher_alg camellia_algs[] = {
{
.base.cra_name = "__ecb(camellia)",
@@ -153,21 +128,6 @@ static struct skcipher_alg camellia_algs[] = {
.setkey = camellia_setkey,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "__ctr(camellia)",
- .base.cra_driver_name = "__ctr-camellia-aesni",
- .base.cra_priority = 400,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct camellia_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = CAMELLIA_MIN_KEY_SIZE,
- .max_keysize = CAMELLIA_MAX_KEY_SIZE,
- .ivsize = CAMELLIA_BLOCK_SIZE,
- .chunksize = CAMELLIA_BLOCK_SIZE,
- .setkey = camellia_setkey,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
}
};
diff --git a/arch/x86/crypto/camellia_glue.c b/arch/x86/crypto/camellia_glue.c
index 242c056e5fa8..fefeedf2b33d 100644
--- a/arch/x86/crypto/camellia_glue.c
+++ b/arch/x86/crypto/camellia_glue.c
@@ -1274,42 +1274,6 @@ void camellia_decrypt_cbc_2way(const void *ctx, u8 *d, const u8 *s)
}
EXPORT_SYMBOL_GPL(camellia_decrypt_cbc_2way);
-void camellia_crypt_ctr(const void *ctx, u8 *d, const u8 *s, le128 *iv)
-{
- be128 ctrblk;
- u128 *dst = (u128 *)d;
- const u128 *src = (const u128 *)s;
-
- if (dst != src)
- *dst = *src;
-
- le128_to_be128(&ctrblk, iv);
- le128_inc(iv);
-
- camellia_enc_blk_xor(ctx, (u8 *)dst, (u8 *)&ctrblk);
-}
-EXPORT_SYMBOL_GPL(camellia_crypt_ctr);
-
-void camellia_crypt_ctr_2way(const void *ctx, u8 *d, const u8 *s, le128 *iv)
-{
- be128 ctrblks[2];
- u128 *dst = (u128 *)d;
- const u128 *src = (const u128 *)s;
-
- if (dst != src) {
- dst[0] = src[0];
- dst[1] = src[1];
- }
-
- le128_to_be128(&ctrblks[0], iv);
- le128_inc(iv);
- le128_to_be128(&ctrblks[1], iv);
- le128_inc(iv);
-
- camellia_enc_blk_xor_2way(ctx, (u8 *)dst, (u8 *)ctrblks);
-}
-EXPORT_SYMBOL_GPL(camellia_crypt_ctr_2way);
-
static const struct common_glue_ctx camellia_enc = {
.num_funcs = 2,
.fpu_blocks_limit = -1,
@@ -1323,19 +1287,6 @@ static const struct common_glue_ctx camellia_enc = {
} }
};
-static const struct common_glue_ctx camellia_ctr = {
- .num_funcs = 2,
- .fpu_blocks_limit = -1,
-
- .funcs = { {
- .num_blocks = 2,
- .fn_u = { .ctr = camellia_crypt_ctr_2way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ctr = camellia_crypt_ctr }
- } }
-};
-
static const struct common_glue_ctx camellia_dec = {
.num_funcs = 2,
.fpu_blocks_limit = -1,
@@ -1382,11 +1333,6 @@ static int cbc_decrypt(struct skcipher_request *req)
return glue_cbc_decrypt_req_128bit(&camellia_dec_cbc, req);
}
-static int ctr_crypt(struct skcipher_request *req)
-{
- return glue_ctr_req_128bit(&camellia_ctr, req);
-}
-
static struct crypto_alg camellia_cipher_alg = {
.cra_name = "camellia",
.cra_driver_name = "camellia-asm",
@@ -1433,20 +1379,6 @@ static struct skcipher_alg camellia_skcipher_algs[] = {
.setkey = camellia_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "ctr(camellia)",
- .base.cra_driver_name = "ctr-camellia-asm",
- .base.cra_priority = 300,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct camellia_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = CAMELLIA_MIN_KEY_SIZE,
- .max_keysize = CAMELLIA_MAX_KEY_SIZE,
- .ivsize = CAMELLIA_BLOCK_SIZE,
- .chunksize = CAMELLIA_BLOCK_SIZE,
- .setkey = camellia_setkey_skcipher,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
}
};
diff --git a/arch/x86/include/asm/crypto/camellia.h b/arch/x86/include/asm/crypto/camellia.h
index 0e5f82adbaf9..1dcea79e8f8e 100644
--- a/arch/x86/include/asm/crypto/camellia.h
+++ b/arch/x86/include/asm/crypto/camellia.h
@@ -38,8 +38,6 @@ asmlinkage void camellia_ecb_enc_16way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void camellia_ecb_dec_16way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void camellia_cbc_dec_16way(const void *ctx, u8 *dst, const u8 *src);
-asmlinkage void camellia_ctr_16way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
static inline void camellia_enc_blk(const void *ctx, u8 *dst, const u8 *src)
{
@@ -65,9 +63,5 @@ static inline void camellia_enc_blk_xor_2way(const void *ctx, u8 *dst,
/* glue helpers */
extern void camellia_decrypt_cbc_2way(const void *ctx, u8 *dst, const u8 *src);
-extern void camellia_crypt_ctr(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-extern void camellia_crypt_ctr_2way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
#endif /* ASM_X86_CAMELLIA_H */
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 7ad9bf84f4a0..ea788cab8c7d 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1286,6 +1286,7 @@ config CRYPTO_CAMELLIA_X86_64
depends on CRYPTO
select CRYPTO_SKCIPHER
select CRYPTO_GLUE_HELPER_X86
+ imply CRYPTO_CTR
help
Camellia cipher algorithm module (x86_64).
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 07/21] crypto: x86/serpent - drop CTR mode implementation
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (5 preceding siblings ...)
2021-01-05 16:47 ` [PATCH v2 06/21] crypto: x86/camellia - drop CTR mode implementation Ard Biesheuvel
@ 2021-01-05 16:47 ` Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 08/21] crypto: x86/cast5 " Ard Biesheuvel
` (14 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:47 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Serpent in CTR mode is never used by the kernel directly, and is highly
unlikely to be relied upon by dm-crypt or algif_skcipher. So let's drop
the accelerated CTR mode implementation, and instead, rely on the CTR
template and the bare cipher.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/serpent-avx-x86_64-asm_64.S | 20 ------
arch/x86/crypto/serpent-avx2-asm_64.S | 25 --------
arch/x86/crypto/serpent_avx2_glue.c | 38 -----------
arch/x86/crypto/serpent_avx_glue.c | 51 ---------------
arch/x86/crypto/serpent_sse2_glue.c | 67 --------------------
crypto/Kconfig | 3 +
6 files changed, 3 insertions(+), 201 deletions(-)
diff --git a/arch/x86/crypto/serpent-avx-x86_64-asm_64.S b/arch/x86/crypto/serpent-avx-x86_64-asm_64.S
index 6b41f46bcc76..b7ee24df7fba 100644
--- a/arch/x86/crypto/serpent-avx-x86_64-asm_64.S
+++ b/arch/x86/crypto/serpent-avx-x86_64-asm_64.S
@@ -711,23 +711,3 @@ SYM_FUNC_START(serpent_cbc_dec_8way_avx)
FRAME_END
ret;
SYM_FUNC_END(serpent_cbc_dec_8way_avx)
-
-SYM_FUNC_START(serpent_ctr_8way_avx)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst
- * %rdx: src
- * %rcx: iv (little endian, 128bit)
- */
- FRAME_BEGIN
-
- load_ctr_8way(%rcx, .Lbswap128_mask, RA1, RB1, RC1, RD1, RA2, RB2, RC2,
- RD2, RK0, RK1, RK2);
-
- call __serpent_enc_blk8_avx;
-
- store_ctr_8way(%rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
-
- FRAME_END
- ret;
-SYM_FUNC_END(serpent_ctr_8way_avx)
diff --git a/arch/x86/crypto/serpent-avx2-asm_64.S b/arch/x86/crypto/serpent-avx2-asm_64.S
index a510a949f02f..9161b6e441f3 100644
--- a/arch/x86/crypto/serpent-avx2-asm_64.S
+++ b/arch/x86/crypto/serpent-avx2-asm_64.S
@@ -724,28 +724,3 @@ SYM_FUNC_START(serpent_cbc_dec_16way)
FRAME_END
ret;
SYM_FUNC_END(serpent_cbc_dec_16way)
-
-SYM_FUNC_START(serpent_ctr_16way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst (16 blocks)
- * %rdx: src (16 blocks)
- * %rcx: iv (little endian, 128bit)
- */
- FRAME_BEGIN
-
- vzeroupper;
-
- load_ctr_16way(%rcx, .Lbswap128_mask, RA1, RB1, RC1, RD1, RA2, RB2, RC2,
- RD2, RK0, RK0x, RK1, RK1x, RK2, RK2x, RK3, RK3x, RNOT,
- tp);
-
- call __serpent_enc_blk16;
-
- store_ctr_16way(%rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
-
- vzeroupper;
-
- FRAME_END
- ret;
-SYM_FUNC_END(serpent_ctr_16way)
diff --git a/arch/x86/crypto/serpent_avx2_glue.c b/arch/x86/crypto/serpent_avx2_glue.c
index 9cdf2c078e21..28e542c6512a 100644
--- a/arch/x86/crypto/serpent_avx2_glue.c
+++ b/arch/x86/crypto/serpent_avx2_glue.c
@@ -22,8 +22,6 @@ asmlinkage void serpent_ecb_enc_16way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void serpent_ecb_dec_16way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void serpent_cbc_dec_16way(const void *ctx, u8 *dst, const u8 *src);
-asmlinkage void serpent_ctr_16way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
{
@@ -46,22 +44,6 @@ static const struct common_glue_ctx serpent_enc = {
} }
};
-static const struct common_glue_ctx serpent_ctr = {
- .num_funcs = 3,
- .fpu_blocks_limit = 8,
-
- .funcs = { {
- .num_blocks = 16,
- .fn_u = { .ctr = serpent_ctr_16way }
- }, {
- .num_blocks = 8,
- .fn_u = { .ctr = serpent_ctr_8way_avx }
- }, {
- .num_blocks = 1,
- .fn_u = { .ctr = __serpent_crypt_ctr }
- } }
-};
-
static const struct common_glue_ctx serpent_dec = {
.num_funcs = 3,
.fpu_blocks_limit = 8,
@@ -114,11 +96,6 @@ static int cbc_decrypt(struct skcipher_request *req)
return glue_cbc_decrypt_req_128bit(&serpent_dec_cbc, req);
}
-static int ctr_crypt(struct skcipher_request *req)
-{
- return glue_ctr_req_128bit(&serpent_ctr, req);
-}
-
static struct skcipher_alg serpent_algs[] = {
{
.base.cra_name = "__ecb(serpent)",
@@ -147,21 +124,6 @@ static struct skcipher_alg serpent_algs[] = {
.setkey = serpent_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "__ctr(serpent)",
- .base.cra_driver_name = "__ctr-serpent-avx2",
- .base.cra_priority = 600,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct serpent_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = SERPENT_MIN_KEY_SIZE,
- .max_keysize = SERPENT_MAX_KEY_SIZE,
- .ivsize = SERPENT_BLOCK_SIZE,
- .chunksize = SERPENT_BLOCK_SIZE,
- .setkey = serpent_setkey_skcipher,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
},
};
diff --git a/arch/x86/crypto/serpent_avx_glue.c b/arch/x86/crypto/serpent_avx_glue.c
index b17a08b57a91..aa4605baf9d4 100644
--- a/arch/x86/crypto/serpent_avx_glue.c
+++ b/arch/x86/crypto/serpent_avx_glue.c
@@ -31,24 +31,6 @@ asmlinkage void serpent_cbc_dec_8way_avx(const void *ctx, u8 *dst,
const u8 *src);
EXPORT_SYMBOL_GPL(serpent_cbc_dec_8way_avx);
-asmlinkage void serpent_ctr_8way_avx(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-EXPORT_SYMBOL_GPL(serpent_ctr_8way_avx);
-
-void __serpent_crypt_ctr(const void *ctx, u8 *d, const u8 *s, le128 *iv)
-{
- be128 ctrblk;
- u128 *dst = (u128 *)d;
- const u128 *src = (const u128 *)s;
-
- le128_to_be128(&ctrblk, iv);
- le128_inc(iv);
-
- __serpent_encrypt(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk);
- u128_xor(dst, src, (u128 *)&ctrblk);
-}
-EXPORT_SYMBOL_GPL(__serpent_crypt_ctr);
-
static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
{
@@ -68,19 +50,6 @@ static const struct common_glue_ctx serpent_enc = {
} }
};
-static const struct common_glue_ctx serpent_ctr = {
- .num_funcs = 2,
- .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .ctr = serpent_ctr_8way_avx }
- }, {
- .num_blocks = 1,
- .fn_u = { .ctr = __serpent_crypt_ctr }
- } }
-};
-
static const struct common_glue_ctx serpent_dec = {
.num_funcs = 2,
.fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
@@ -127,11 +96,6 @@ static int cbc_decrypt(struct skcipher_request *req)
return glue_cbc_decrypt_req_128bit(&serpent_dec_cbc, req);
}
-static int ctr_crypt(struct skcipher_request *req)
-{
- return glue_ctr_req_128bit(&serpent_ctr, req);
-}
-
static struct skcipher_alg serpent_algs[] = {
{
.base.cra_name = "__ecb(serpent)",
@@ -160,21 +124,6 @@ static struct skcipher_alg serpent_algs[] = {
.setkey = serpent_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "__ctr(serpent)",
- .base.cra_driver_name = "__ctr-serpent-avx",
- .base.cra_priority = 500,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct serpent_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = SERPENT_MIN_KEY_SIZE,
- .max_keysize = SERPENT_MAX_KEY_SIZE,
- .ivsize = SERPENT_BLOCK_SIZE,
- .chunksize = SERPENT_BLOCK_SIZE,
- .setkey = serpent_setkey_skcipher,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
},
};
diff --git a/arch/x86/crypto/serpent_sse2_glue.c b/arch/x86/crypto/serpent_sse2_glue.c
index 4fed8d26b91a..9acb3bf28feb 100644
--- a/arch/x86/crypto/serpent_sse2_glue.c
+++ b/arch/x86/crypto/serpent_sse2_glue.c
@@ -10,8 +10,6 @@
*
* CBC & ECB parts based on code (crypto/cbc.c,ecb.c) by:
* Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
- * CTR part based on code (crypto/ctr.c) by:
- * (C) Copyright IBM Corp. 2007 - Joy Latten <latten@us.ibm.com>
*/
#include <linux/module.h>
@@ -47,38 +45,6 @@ static void serpent_decrypt_cbc_xway(const void *ctx, u8 *d, const u8 *s)
u128_xor(dst + (j + 1), dst + (j + 1), ivs + j);
}
-static void serpent_crypt_ctr(const void *ctx, u8 *d, const u8 *s, le128 *iv)
-{
- be128 ctrblk;
- u128 *dst = (u128 *)d;
- const u128 *src = (const u128 *)s;
-
- le128_to_be128(&ctrblk, iv);
- le128_inc(iv);
-
- __serpent_encrypt(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk);
- u128_xor(dst, src, (u128 *)&ctrblk);
-}
-
-static void serpent_crypt_ctr_xway(const void *ctx, u8 *d, const u8 *s,
- le128 *iv)
-{
- be128 ctrblks[SERPENT_PARALLEL_BLOCKS];
- u128 *dst = (u128 *)d;
- const u128 *src = (const u128 *)s;
- unsigned int i;
-
- for (i = 0; i < SERPENT_PARALLEL_BLOCKS; i++) {
- if (dst != src)
- dst[i] = src[i];
-
- le128_to_be128(&ctrblks[i], iv);
- le128_inc(iv);
- }
-
- serpent_enc_blk_xway_xor(ctx, (u8 *)dst, (u8 *)ctrblks);
-}
-
static const struct common_glue_ctx serpent_enc = {
.num_funcs = 2,
.fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
@@ -92,19 +58,6 @@ static const struct common_glue_ctx serpent_enc = {
} }
};
-static const struct common_glue_ctx serpent_ctr = {
- .num_funcs = 2,
- .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .ctr = serpent_crypt_ctr_xway }
- }, {
- .num_blocks = 1,
- .fn_u = { .ctr = serpent_crypt_ctr }
- } }
-};
-
static const struct common_glue_ctx serpent_dec = {
.num_funcs = 2,
.fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
@@ -152,11 +105,6 @@ static int cbc_decrypt(struct skcipher_request *req)
return glue_cbc_decrypt_req_128bit(&serpent_dec_cbc, req);
}
-static int ctr_crypt(struct skcipher_request *req)
-{
- return glue_ctr_req_128bit(&serpent_ctr, req);
-}
-
static struct skcipher_alg serpent_algs[] = {
{
.base.cra_name = "__ecb(serpent)",
@@ -185,21 +133,6 @@ static struct skcipher_alg serpent_algs[] = {
.setkey = serpent_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "__ctr(serpent)",
- .base.cra_driver_name = "__ctr-serpent-sse2",
- .base.cra_priority = 400,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct serpent_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = SERPENT_MIN_KEY_SIZE,
- .max_keysize = SERPENT_MAX_KEY_SIZE,
- .ivsize = SERPENT_BLOCK_SIZE,
- .chunksize = SERPENT_BLOCK_SIZE,
- .setkey = serpent_setkey_skcipher,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
},
};
diff --git a/crypto/Kconfig b/crypto/Kconfig
index ea788cab8c7d..dd48c3bab3f5 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1539,6 +1539,7 @@ config CRYPTO_SERPENT_SSE2_X86_64
select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SERPENT
select CRYPTO_SIMD
+ imply CRYPTO_CTR
help
Serpent cipher algorithm, by Anderson, Biham & Knudsen.
@@ -1558,6 +1559,7 @@ config CRYPTO_SERPENT_SSE2_586
select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SERPENT
select CRYPTO_SIMD
+ imply CRYPTO_CTR
help
Serpent cipher algorithm, by Anderson, Biham & Knudsen.
@@ -1578,6 +1580,7 @@ config CRYPTO_SERPENT_AVX_X86_64
select CRYPTO_SERPENT
select CRYPTO_SIMD
imply CRYPTO_XTS
+ imply CRYPTO_CTR
help
Serpent cipher algorithm, by Anderson, Biham & Knudsen.
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 08/21] crypto: x86/cast5 - drop CTR mode implementation
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (6 preceding siblings ...)
2021-01-05 16:47 ` [PATCH v2 07/21] crypto: x86/serpent " Ard Biesheuvel
@ 2021-01-05 16:47 ` Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 09/21] crypto: x86/cast6 " Ard Biesheuvel
` (13 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:47 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
CAST5 in CTR mode is never used by the kernel directly, and is highly
unlikely to be relied upon by dm-crypt or algif_skcipher. So let's drop
the accelerated CTR mode implementation, and instead, rely on the CTR
template and the bare cipher.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/cast5_avx_glue.c | 103 --------------------
crypto/Kconfig | 1 +
2 files changed, 1 insertion(+), 103 deletions(-)
diff --git a/arch/x86/crypto/cast5_avx_glue.c b/arch/x86/crypto/cast5_avx_glue.c
index 384ccb00f9e1..e0d1c7903b29 100644
--- a/arch/x86/crypto/cast5_avx_glue.c
+++ b/arch/x86/crypto/cast5_avx_glue.c
@@ -23,8 +23,6 @@ asmlinkage void cast5_ecb_dec_16way(struct cast5_ctx *ctx, u8 *dst,
const u8 *src);
asmlinkage void cast5_cbc_dec_16way(struct cast5_ctx *ctx, u8 *dst,
const u8 *src);
-asmlinkage void cast5_ctr_16way(struct cast5_ctx *ctx, u8 *dst, const u8 *src,
- __be64 *iv);
static int cast5_setkey_skcipher(struct crypto_skcipher *tfm, const u8 *key,
unsigned int keylen)
@@ -214,92 +212,6 @@ static int cbc_decrypt(struct skcipher_request *req)
return err;
}
-static void ctr_crypt_final(struct skcipher_walk *walk, struct cast5_ctx *ctx)
-{
- u8 *ctrblk = walk->iv;
- u8 keystream[CAST5_BLOCK_SIZE];
- u8 *src = walk->src.virt.addr;
- u8 *dst = walk->dst.virt.addr;
- unsigned int nbytes = walk->nbytes;
-
- __cast5_encrypt(ctx, keystream, ctrblk);
- crypto_xor_cpy(dst, keystream, src, nbytes);
-
- crypto_inc(ctrblk, CAST5_BLOCK_SIZE);
-}
-
-static unsigned int __ctr_crypt(struct skcipher_walk *walk,
- struct cast5_ctx *ctx)
-{
- const unsigned int bsize = CAST5_BLOCK_SIZE;
- unsigned int nbytes = walk->nbytes;
- u64 *src = (u64 *)walk->src.virt.addr;
- u64 *dst = (u64 *)walk->dst.virt.addr;
-
- /* Process multi-block batch */
- if (nbytes >= bsize * CAST5_PARALLEL_BLOCKS) {
- do {
- cast5_ctr_16way(ctx, (u8 *)dst, (u8 *)src,
- (__be64 *)walk->iv);
-
- src += CAST5_PARALLEL_BLOCKS;
- dst += CAST5_PARALLEL_BLOCKS;
- nbytes -= bsize * CAST5_PARALLEL_BLOCKS;
- } while (nbytes >= bsize * CAST5_PARALLEL_BLOCKS);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Handle leftovers */
- do {
- u64 ctrblk;
-
- if (dst != src)
- *dst = *src;
-
- ctrblk = *(u64 *)walk->iv;
- be64_add_cpu((__be64 *)walk->iv, 1);
-
- __cast5_encrypt(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk);
- *dst ^= ctrblk;
-
- src += 1;
- dst += 1;
- nbytes -= bsize;
- } while (nbytes >= bsize);
-
-done:
- return nbytes;
-}
-
-static int ctr_crypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct cast5_ctx *ctx = crypto_skcipher_ctx(tfm);
- bool fpu_enabled = false;
- struct skcipher_walk walk;
- unsigned int nbytes;
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
-
- while ((nbytes = walk.nbytes) >= CAST5_BLOCK_SIZE) {
- fpu_enabled = cast5_fpu_begin(fpu_enabled, &walk, nbytes);
- nbytes = __ctr_crypt(&walk, ctx);
- err = skcipher_walk_done(&walk, nbytes);
- }
-
- cast5_fpu_end(fpu_enabled);
-
- if (walk.nbytes) {
- ctr_crypt_final(&walk, ctx);
- err = skcipher_walk_done(&walk, 0);
- }
-
- return err;
-}
-
static struct skcipher_alg cast5_algs[] = {
{
.base.cra_name = "__ecb(cast5)",
@@ -328,21 +240,6 @@ static struct skcipher_alg cast5_algs[] = {
.setkey = cast5_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "__ctr(cast5)",
- .base.cra_driver_name = "__ctr-cast5-avx",
- .base.cra_priority = 200,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct cast5_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = CAST5_MIN_KEY_SIZE,
- .max_keysize = CAST5_MAX_KEY_SIZE,
- .ivsize = CAST5_BLOCK_SIZE,
- .chunksize = CAST5_BLOCK_SIZE,
- .setkey = cast5_setkey_skcipher,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
}
};
diff --git a/crypto/Kconfig b/crypto/Kconfig
index dd48c3bab3f5..fed73fff5a65 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1372,6 +1372,7 @@ config CRYPTO_CAST5_AVX_X86_64
select CRYPTO_CAST5
select CRYPTO_CAST_COMMON
select CRYPTO_SIMD
+ imply CRYPTO_CTR
help
The CAST5 encryption algorithm (synonymous with CAST-128) is
described in RFC2144.
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 09/21] crypto: x86/cast6 - drop CTR mode implementation
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (7 preceding siblings ...)
2021-01-05 16:47 ` [PATCH v2 08/21] crypto: x86/cast5 " Ard Biesheuvel
@ 2021-01-05 16:47 ` Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 10/21] crypto: x86/twofish " Ard Biesheuvel
` (12 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:47 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
CAST6 in CTR mode is never used by the kernel directly, and is highly
unlikely to be relied upon by dm-crypt or algif_skcipher. So let's drop
the accelerated CTR mode implementation, and instead, rely on the CTR
template and the bare cipher.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/cast6-avx-x86_64-asm_64.S | 28 ------------
arch/x86/crypto/cast6_avx_glue.c | 48 --------------------
crypto/Kconfig | 1 +
3 files changed, 1 insertion(+), 76 deletions(-)
diff --git a/arch/x86/crypto/cast6-avx-x86_64-asm_64.S b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
index 0c1ea836215a..fbddcecc3e3f 100644
--- a/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
+++ b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
@@ -410,31 +410,3 @@ SYM_FUNC_START(cast6_cbc_dec_8way)
FRAME_END
ret;
SYM_FUNC_END(cast6_cbc_dec_8way)
-
-SYM_FUNC_START(cast6_ctr_8way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst
- * %rdx: src
- * %rcx: iv (little endian, 128bit)
- */
- FRAME_BEGIN
- pushq %r12;
- pushq %r15
-
- movq %rdi, CTX;
- movq %rsi, %r11;
- movq %rdx, %r12;
-
- load_ctr_8way(%rcx, .Lbswap128_mask, RA1, RB1, RC1, RD1, RA2, RB2, RC2,
- RD2, RX, RKR, RKM);
-
- call __cast6_enc_blk8;
-
- store_ctr_8way(%r12, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
-
- popq %r15;
- popq %r12;
- FRAME_END
- ret;
-SYM_FUNC_END(cast6_ctr_8way)
diff --git a/arch/x86/crypto/cast6_avx_glue.c b/arch/x86/crypto/cast6_avx_glue.c
index 5a21d3e9041c..790efcb6df3b 100644
--- a/arch/x86/crypto/cast6_avx_glue.c
+++ b/arch/x86/crypto/cast6_avx_glue.c
@@ -23,8 +23,6 @@ asmlinkage void cast6_ecb_enc_8way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void cast6_ecb_dec_8way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void cast6_cbc_dec_8way(const void *ctx, u8 *dst, const u8 *src);
-asmlinkage void cast6_ctr_8way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
static int cast6_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
@@ -32,19 +30,6 @@ static int cast6_setkey_skcipher(struct crypto_skcipher *tfm,
return cast6_setkey(&tfm->base, key, keylen);
}
-static void cast6_crypt_ctr(const void *ctx, u8 *d, const u8 *s, le128 *iv)
-{
- be128 ctrblk;
- u128 *dst = (u128 *)d;
- const u128 *src = (const u128 *)s;
-
- le128_to_be128(&ctrblk, iv);
- le128_inc(iv);
-
- __cast6_encrypt(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk);
- u128_xor(dst, src, (u128 *)&ctrblk);
-}
-
static const struct common_glue_ctx cast6_enc = {
.num_funcs = 2,
.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
@@ -58,19 +43,6 @@ static const struct common_glue_ctx cast6_enc = {
} }
};
-static const struct common_glue_ctx cast6_ctr = {
- .num_funcs = 2,
- .fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAST6_PARALLEL_BLOCKS,
- .fn_u = { .ctr = cast6_ctr_8way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ctr = cast6_crypt_ctr }
- } }
-};
-
static const struct common_glue_ctx cast6_dec = {
.num_funcs = 2,
.fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
@@ -117,11 +89,6 @@ static int cbc_decrypt(struct skcipher_request *req)
return glue_cbc_decrypt_req_128bit(&cast6_dec_cbc, req);
}
-static int ctr_crypt(struct skcipher_request *req)
-{
- return glue_ctr_req_128bit(&cast6_ctr, req);
-}
-
static struct skcipher_alg cast6_algs[] = {
{
.base.cra_name = "__ecb(cast6)",
@@ -150,21 +117,6 @@ static struct skcipher_alg cast6_algs[] = {
.setkey = cast6_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "__ctr(cast6)",
- .base.cra_driver_name = "__ctr-cast6-avx",
- .base.cra_priority = 200,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct cast6_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = CAST6_MIN_KEY_SIZE,
- .max_keysize = CAST6_MAX_KEY_SIZE,
- .ivsize = CAST6_BLOCK_SIZE,
- .chunksize = CAST6_BLOCK_SIZE,
- .setkey = cast6_setkey_skcipher,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
},
};
diff --git a/crypto/Kconfig b/crypto/Kconfig
index fed73fff5a65..3f51c5dfc2a9 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1397,6 +1397,7 @@ config CRYPTO_CAST6_AVX_X86_64
select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SIMD
imply CRYPTO_XTS
+ imply CRYPTO_CTR
help
The CAST6 encryption algorithm (synonymous with CAST-256) is
described in RFC2612.
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 10/21] crypto: x86/twofish - drop CTR mode implementation
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (8 preceding siblings ...)
2021-01-05 16:47 ` [PATCH v2 09/21] crypto: x86/cast6 " Ard Biesheuvel
@ 2021-01-05 16:47 ` Ard Biesheuvel
2021-01-05 16:47 ` [PATCH v2 11/21] crypto: x86/glue-helper - drop CTR helper routines Ard Biesheuvel
` (11 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:47 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Twofish in CTR mode is never used by the kernel directly, and is highly
unlikely to be relied upon by dm-crypt or algif_skcipher. So let's drop
the accelerated CTR mode implementation, and instead, rely on the CTR
template and the bare cipher.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/twofish-avx-x86_64-asm_64.S | 27 -------
arch/x86/crypto/twofish_avx_glue.c | 38 ----------
arch/x86/crypto/twofish_glue_3way.c | 78 --------------------
arch/x86/include/asm/crypto/twofish.h | 4 -
crypto/Kconfig | 2 +
5 files changed, 2 insertions(+), 147 deletions(-)
diff --git a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
index 84e61ef03638..37e63b3c664e 100644
--- a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
+++ b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
@@ -374,30 +374,3 @@ SYM_FUNC_START(twofish_cbc_dec_8way)
FRAME_END
ret;
SYM_FUNC_END(twofish_cbc_dec_8way)
-
-SYM_FUNC_START(twofish_ctr_8way)
- /* input:
- * %rdi: ctx, CTX
- * %rsi: dst
- * %rdx: src
- * %rcx: iv (little endian, 128bit)
- */
- FRAME_BEGIN
-
- pushq %r12;
-
- movq %rsi, %r11;
- movq %rdx, %r12;
-
- load_ctr_8way(%rcx, .Lbswap128_mask, RA1, RB1, RC1, RD1, RA2, RB2, RC2,
- RD2, RX0, RX1, RY0);
-
- call __twofish_enc_blk8;
-
- store_ctr_8way(%r12, %r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
-
- popq %r12;
-
- FRAME_END
- ret;
-SYM_FUNC_END(twofish_ctr_8way)
diff --git a/arch/x86/crypto/twofish_avx_glue.c b/arch/x86/crypto/twofish_avx_glue.c
index 7b539bbb108f..13f810b61034 100644
--- a/arch/x86/crypto/twofish_avx_glue.c
+++ b/arch/x86/crypto/twofish_avx_glue.c
@@ -25,8 +25,6 @@ asmlinkage void twofish_ecb_enc_8way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void twofish_ecb_dec_8way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void twofish_cbc_dec_8way(const void *ctx, u8 *dst, const u8 *src);
-asmlinkage void twofish_ctr_8way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
static int twofish_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
@@ -55,22 +53,6 @@ static const struct common_glue_ctx twofish_enc = {
} }
};
-static const struct common_glue_ctx twofish_ctr = {
- .num_funcs = 3,
- .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = TWOFISH_PARALLEL_BLOCKS,
- .fn_u = { .ctr = twofish_ctr_8way }
- }, {
- .num_blocks = 3,
- .fn_u = { .ctr = twofish_enc_blk_ctr_3way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ctr = twofish_enc_blk_ctr }
- } }
-};
-
static const struct common_glue_ctx twofish_dec = {
.num_funcs = 3,
.fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
@@ -123,11 +105,6 @@ static int cbc_decrypt(struct skcipher_request *req)
return glue_cbc_decrypt_req_128bit(&twofish_dec_cbc, req);
}
-static int ctr_crypt(struct skcipher_request *req)
-{
- return glue_ctr_req_128bit(&twofish_ctr, req);
-}
-
static struct skcipher_alg twofish_algs[] = {
{
.base.cra_name = "__ecb(twofish)",
@@ -156,21 +133,6 @@ static struct skcipher_alg twofish_algs[] = {
.setkey = twofish_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "__ctr(twofish)",
- .base.cra_driver_name = "__ctr-twofish-avx",
- .base.cra_priority = 400,
- .base.cra_flags = CRYPTO_ALG_INTERNAL,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct twofish_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = TF_MIN_KEY_SIZE,
- .max_keysize = TF_MAX_KEY_SIZE,
- .ivsize = TF_BLOCK_SIZE,
- .chunksize = TF_BLOCK_SIZE,
- .setkey = twofish_setkey_skcipher,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
},
};
diff --git a/arch/x86/crypto/twofish_glue_3way.c b/arch/x86/crypto/twofish_glue_3way.c
index 768af6075479..88252370db0a 100644
--- a/arch/x86/crypto/twofish_glue_3way.c
+++ b/arch/x86/crypto/twofish_glue_3way.c
@@ -30,12 +30,6 @@ static inline void twofish_enc_blk_3way(const void *ctx, u8 *dst, const u8 *src)
__twofish_enc_blk_3way(ctx, dst, src, false);
}
-static inline void twofish_enc_blk_xor_3way(const void *ctx, u8 *dst,
- const u8 *src)
-{
- __twofish_enc_blk_3way(ctx, dst, src, true);
-}
-
void twofish_dec_blk_cbc_3way(const void *ctx, u8 *d, const u8 *s)
{
u128 ivs[2];
@@ -52,46 +46,6 @@ void twofish_dec_blk_cbc_3way(const void *ctx, u8 *d, const u8 *s)
}
EXPORT_SYMBOL_GPL(twofish_dec_blk_cbc_3way);
-void twofish_enc_blk_ctr(const void *ctx, u8 *d, const u8 *s, le128 *iv)
-{
- be128 ctrblk;
- u128 *dst = (u128 *)d;
- const u128 *src = (const u128 *)s;
-
- if (dst != src)
- *dst = *src;
-
- le128_to_be128(&ctrblk, iv);
- le128_inc(iv);
-
- twofish_enc_blk(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk);
- u128_xor(dst, dst, (u128 *)&ctrblk);
-}
-EXPORT_SYMBOL_GPL(twofish_enc_blk_ctr);
-
-void twofish_enc_blk_ctr_3way(const void *ctx, u8 *d, const u8 *s, le128 *iv)
-{
- be128 ctrblks[3];
- u128 *dst = (u128 *)d;
- const u128 *src = (const u128 *)s;
-
- if (dst != src) {
- dst[0] = src[0];
- dst[1] = src[1];
- dst[2] = src[2];
- }
-
- le128_to_be128(&ctrblks[0], iv);
- le128_inc(iv);
- le128_to_be128(&ctrblks[1], iv);
- le128_inc(iv);
- le128_to_be128(&ctrblks[2], iv);
- le128_inc(iv);
-
- twofish_enc_blk_xor_3way(ctx, (u8 *)dst, (u8 *)ctrblks);
-}
-EXPORT_SYMBOL_GPL(twofish_enc_blk_ctr_3way);
-
static const struct common_glue_ctx twofish_enc = {
.num_funcs = 2,
.fpu_blocks_limit = -1,
@@ -105,19 +59,6 @@ static const struct common_glue_ctx twofish_enc = {
} }
};
-static const struct common_glue_ctx twofish_ctr = {
- .num_funcs = 2,
- .fpu_blocks_limit = -1,
-
- .funcs = { {
- .num_blocks = 3,
- .fn_u = { .ctr = twofish_enc_blk_ctr_3way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ctr = twofish_enc_blk_ctr }
- } }
-};
-
static const struct common_glue_ctx twofish_dec = {
.num_funcs = 2,
.fpu_blocks_limit = -1,
@@ -164,11 +105,6 @@ static int cbc_decrypt(struct skcipher_request *req)
return glue_cbc_decrypt_req_128bit(&twofish_dec_cbc, req);
}
-static int ctr_crypt(struct skcipher_request *req)
-{
- return glue_ctr_req_128bit(&twofish_ctr, req);
-}
-
static struct skcipher_alg tf_skciphers[] = {
{
.base.cra_name = "ecb(twofish)",
@@ -195,20 +131,6 @@ static struct skcipher_alg tf_skciphers[] = {
.setkey = twofish_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "ctr(twofish)",
- .base.cra_driver_name = "ctr-twofish-3way",
- .base.cra_priority = 300,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct twofish_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = TF_MIN_KEY_SIZE,
- .max_keysize = TF_MAX_KEY_SIZE,
- .ivsize = TF_BLOCK_SIZE,
- .chunksize = TF_BLOCK_SIZE,
- .setkey = twofish_setkey_skcipher,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
},
};
diff --git a/arch/x86/include/asm/crypto/twofish.h b/arch/x86/include/asm/crypto/twofish.h
index 2c377a8042e1..12df400e6d53 100644
--- a/arch/x86/include/asm/crypto/twofish.h
+++ b/arch/x86/include/asm/crypto/twofish.h
@@ -17,9 +17,5 @@ asmlinkage void twofish_dec_blk_3way(const void *ctx, u8 *dst, const u8 *src);
/* helpers from twofish_x86_64-3way module */
extern void twofish_dec_blk_cbc_3way(const void *ctx, u8 *dst, const u8 *src);
-extern void twofish_enc_blk_ctr(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
-extern void twofish_enc_blk_ctr_3way(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
#endif /* ASM_X86_TWOFISH_H */
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 3f51c5dfc2a9..606f94079f05 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1680,6 +1680,7 @@ config CRYPTO_TWOFISH_586
depends on (X86 || UML_X86) && !64BIT
select CRYPTO_ALGAPI
select CRYPTO_TWOFISH_COMMON
+ imply CRYPTO_CTR
help
Twofish cipher algorithm.
@@ -1696,6 +1697,7 @@ config CRYPTO_TWOFISH_X86_64
depends on (X86 || UML_X86) && 64BIT
select CRYPTO_ALGAPI
select CRYPTO_TWOFISH_COMMON
+ imply CRYPTO_CTR
help
Twofish cipher algorithm (x86_64).
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 11/21] crypto: x86/glue-helper - drop CTR helper routines
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (9 preceding siblings ...)
2021-01-05 16:47 ` [PATCH v2 10/21] crypto: x86/twofish " Ard Biesheuvel
@ 2021-01-05 16:47 ` Ard Biesheuvel
2021-01-05 16:48 ` [PATCH v2 12/21] crypto: x86/des - drop CTR mode implementation Ard Biesheuvel
` (10 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:47 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
The glue helper's CTR routines are no longer used, so drop them.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/glue_helper-asm-avx.S | 45 ------------
arch/x86/crypto/glue_helper-asm-avx2.S | 58 ----------------
arch/x86/crypto/glue_helper.c | 72 --------------------
arch/x86/include/asm/crypto/glue_helper.h | 32 ---------
4 files changed, 207 deletions(-)
diff --git a/arch/x86/crypto/glue_helper-asm-avx.S b/arch/x86/crypto/glue_helper-asm-avx.S
index a94511432803..3da385271227 100644
--- a/arch/x86/crypto/glue_helper-asm-avx.S
+++ b/arch/x86/crypto/glue_helper-asm-avx.S
@@ -34,48 +34,3 @@
vpxor (5*16)(src), x6, x6; \
vpxor (6*16)(src), x7, x7; \
store_8way(dst, x0, x1, x2, x3, x4, x5, x6, x7);
-
-#define inc_le128(x, minus_one, tmp) \
- vpcmpeqq minus_one, x, tmp; \
- vpsubq minus_one, x, x; \
- vpslldq $8, tmp, tmp; \
- vpsubq tmp, x, x;
-
-#define load_ctr_8way(iv, bswap, x0, x1, x2, x3, x4, x5, x6, x7, t0, t1, t2) \
- vpcmpeqd t0, t0, t0; \
- vpsrldq $8, t0, t0; /* low: -1, high: 0 */ \
- vmovdqa bswap, t1; \
- \
- /* load IV and byteswap */ \
- vmovdqu (iv), x7; \
- vpshufb t1, x7, x0; \
- \
- /* construct IVs */ \
- inc_le128(x7, t0, t2); \
- vpshufb t1, x7, x1; \
- inc_le128(x7, t0, t2); \
- vpshufb t1, x7, x2; \
- inc_le128(x7, t0, t2); \
- vpshufb t1, x7, x3; \
- inc_le128(x7, t0, t2); \
- vpshufb t1, x7, x4; \
- inc_le128(x7, t0, t2); \
- vpshufb t1, x7, x5; \
- inc_le128(x7, t0, t2); \
- vpshufb t1, x7, x6; \
- inc_le128(x7, t0, t2); \
- vmovdqa x7, t2; \
- vpshufb t1, x7, x7; \
- inc_le128(t2, t0, t1); \
- vmovdqu t2, (iv);
-
-#define store_ctr_8way(src, dst, x0, x1, x2, x3, x4, x5, x6, x7) \
- vpxor (0*16)(src), x0, x0; \
- vpxor (1*16)(src), x1, x1; \
- vpxor (2*16)(src), x2, x2; \
- vpxor (3*16)(src), x3, x3; \
- vpxor (4*16)(src), x4, x4; \
- vpxor (5*16)(src), x5, x5; \
- vpxor (6*16)(src), x6, x6; \
- vpxor (7*16)(src), x7, x7; \
- store_8way(dst, x0, x1, x2, x3, x4, x5, x6, x7);
diff --git a/arch/x86/crypto/glue_helper-asm-avx2.S b/arch/x86/crypto/glue_helper-asm-avx2.S
index 456bface1e5d..c77e9049431f 100644
--- a/arch/x86/crypto/glue_helper-asm-avx2.S
+++ b/arch/x86/crypto/glue_helper-asm-avx2.S
@@ -37,61 +37,3 @@
vpxor (5*32+16)(src), x6, x6; \
vpxor (6*32+16)(src), x7, x7; \
store_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7);
-
-#define inc_le128(x, minus_one, tmp) \
- vpcmpeqq minus_one, x, tmp; \
- vpsubq minus_one, x, x; \
- vpslldq $8, tmp, tmp; \
- vpsubq tmp, x, x;
-
-#define add2_le128(x, minus_one, minus_two, tmp1, tmp2) \
- vpcmpeqq minus_one, x, tmp1; \
- vpcmpeqq minus_two, x, tmp2; \
- vpsubq minus_two, x, x; \
- vpor tmp2, tmp1, tmp1; \
- vpslldq $8, tmp1, tmp1; \
- vpsubq tmp1, x, x;
-
-#define load_ctr_16way(iv, bswap, x0, x1, x2, x3, x4, x5, x6, x7, t0, t0x, t1, \
- t1x, t2, t2x, t3, t3x, t4, t5) \
- vpcmpeqd t0, t0, t0; \
- vpsrldq $8, t0, t0; /* ab: -1:0 ; cd: -1:0 */ \
- vpaddq t0, t0, t4; /* ab: -2:0 ; cd: -2:0 */\
- \
- /* load IV and byteswap */ \
- vmovdqu (iv), t2x; \
- vmovdqa t2x, t3x; \
- inc_le128(t2x, t0x, t1x); \
- vbroadcasti128 bswap, t1; \
- vinserti128 $1, t2x, t3, t2; /* ab: le0 ; cd: le1 */ \
- vpshufb t1, t2, x0; \
- \
- /* construct IVs */ \
- add2_le128(t2, t0, t4, t3, t5); /* ab: le2 ; cd: le3 */ \
- vpshufb t1, t2, x1; \
- add2_le128(t2, t0, t4, t3, t5); \
- vpshufb t1, t2, x2; \
- add2_le128(t2, t0, t4, t3, t5); \
- vpshufb t1, t2, x3; \
- add2_le128(t2, t0, t4, t3, t5); \
- vpshufb t1, t2, x4; \
- add2_le128(t2, t0, t4, t3, t5); \
- vpshufb t1, t2, x5; \
- add2_le128(t2, t0, t4, t3, t5); \
- vpshufb t1, t2, x6; \
- add2_le128(t2, t0, t4, t3, t5); \
- vpshufb t1, t2, x7; \
- vextracti128 $1, t2, t2x; \
- inc_le128(t2x, t0x, t3x); \
- vmovdqu t2x, (iv);
-
-#define store_ctr_16way(src, dst, x0, x1, x2, x3, x4, x5, x6, x7) \
- vpxor (0*32)(src), x0, x0; \
- vpxor (1*32)(src), x1, x1; \
- vpxor (2*32)(src), x2, x2; \
- vpxor (3*32)(src), x3, x3; \
- vpxor (4*32)(src), x4, x4; \
- vpxor (5*32)(src), x5, x5; \
- vpxor (6*32)(src), x6, x6; \
- vpxor (7*32)(src), x7, x7; \
- store_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7);
diff --git a/arch/x86/crypto/glue_helper.c b/arch/x86/crypto/glue_helper.c
index 786ffda1caf4..895d34150c3f 100644
--- a/arch/x86/crypto/glue_helper.c
+++ b/arch/x86/crypto/glue_helper.c
@@ -6,8 +6,6 @@
*
* CBC & ECB parts based on code (crypto/cbc.c,ecb.c) by:
* Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
- * CTR part based on code (crypto/ctr.c) by:
- * (C) Copyright IBM Corp. 2007 - Joy Latten <latten@us.ibm.com>
*/
#include <linux/module.h>
@@ -154,74 +152,4 @@ int glue_cbc_decrypt_req_128bit(const struct common_glue_ctx *gctx,
}
EXPORT_SYMBOL_GPL(glue_cbc_decrypt_req_128bit);
-int glue_ctr_req_128bit(const struct common_glue_ctx *gctx,
- struct skcipher_request *req)
-{
- void *ctx = crypto_skcipher_ctx(crypto_skcipher_reqtfm(req));
- const unsigned int bsize = 128 / 8;
- struct skcipher_walk walk;
- bool fpu_enabled = false;
- unsigned int nbytes;
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
-
- while ((nbytes = walk.nbytes) >= bsize) {
- const u128 *src = walk.src.virt.addr;
- u128 *dst = walk.dst.virt.addr;
- unsigned int func_bytes, num_blocks;
- unsigned int i;
- le128 ctrblk;
-
- fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
- &walk, fpu_enabled, nbytes);
-
- be128_to_le128(&ctrblk, (be128 *)walk.iv);
-
- for (i = 0; i < gctx->num_funcs; i++) {
- num_blocks = gctx->funcs[i].num_blocks;
- func_bytes = bsize * num_blocks;
-
- if (nbytes < func_bytes)
- continue;
-
- /* Process multi-block batch */
- do {
- gctx->funcs[i].fn_u.ctr(ctx, (u8 *)dst,
- (const u8 *)src,
- &ctrblk);
- src += num_blocks;
- dst += num_blocks;
- nbytes -= func_bytes;
- } while (nbytes >= func_bytes);
-
- if (nbytes < bsize)
- break;
- }
-
- le128_to_be128((be128 *)walk.iv, &ctrblk);
- err = skcipher_walk_done(&walk, nbytes);
- }
-
- glue_fpu_end(fpu_enabled);
-
- if (nbytes) {
- le128 ctrblk;
- u128 tmp;
-
- be128_to_le128(&ctrblk, (be128 *)walk.iv);
- memcpy(&tmp, walk.src.virt.addr, nbytes);
- gctx->funcs[gctx->num_funcs - 1].fn_u.ctr(ctx, (u8 *)&tmp,
- (const u8 *)&tmp,
- &ctrblk);
- memcpy(walk.dst.virt.addr, &tmp, nbytes);
- le128_to_be128((be128 *)walk.iv, &ctrblk);
-
- err = skcipher_walk_done(&walk, 0);
- }
-
- return err;
-}
-EXPORT_SYMBOL_GPL(glue_ctr_req_128bit);
-
MODULE_LICENSE("GPL");
diff --git a/arch/x86/include/asm/crypto/glue_helper.h b/arch/x86/include/asm/crypto/glue_helper.h
index 62680775d189..23e09efd2aa6 100644
--- a/arch/x86/include/asm/crypto/glue_helper.h
+++ b/arch/x86/include/asm/crypto/glue_helper.h
@@ -9,19 +9,15 @@
#include <crypto/internal/skcipher.h>
#include <linux/kernel.h>
#include <asm/fpu/api.h>
-#include <crypto/b128ops.h>
typedef void (*common_glue_func_t)(const void *ctx, u8 *dst, const u8 *src);
typedef void (*common_glue_cbc_func_t)(const void *ctx, u8 *dst, const u8 *src);
-typedef void (*common_glue_ctr_func_t)(const void *ctx, u8 *dst, const u8 *src,
- le128 *iv);
struct common_glue_func_entry {
unsigned int num_blocks; /* number of blocks that @fn will process */
union {
common_glue_func_t ecb;
common_glue_cbc_func_t cbc;
- common_glue_ctr_func_t ctr;
} fn_u;
};
@@ -66,31 +62,6 @@ static inline void glue_fpu_end(bool fpu_enabled)
kernel_fpu_end();
}
-static inline void le128_to_be128(be128 *dst, const le128 *src)
-{
- dst->a = cpu_to_be64(le64_to_cpu(src->a));
- dst->b = cpu_to_be64(le64_to_cpu(src->b));
-}
-
-static inline void be128_to_le128(le128 *dst, const be128 *src)
-{
- dst->a = cpu_to_le64(be64_to_cpu(src->a));
- dst->b = cpu_to_le64(be64_to_cpu(src->b));
-}
-
-static inline void le128_inc(le128 *i)
-{
- u64 a = le64_to_cpu(i->a);
- u64 b = le64_to_cpu(i->b);
-
- b++;
- if (!b)
- a++;
-
- i->a = cpu_to_le64(a);
- i->b = cpu_to_le64(b);
-}
-
extern int glue_ecb_req_128bit(const struct common_glue_ctx *gctx,
struct skcipher_request *req);
@@ -100,7 +71,4 @@ extern int glue_cbc_encrypt_req_128bit(const common_glue_func_t fn,
extern int glue_cbc_decrypt_req_128bit(const struct common_glue_ctx *gctx,
struct skcipher_request *req);
-extern int glue_ctr_req_128bit(const struct common_glue_ctx *gctx,
- struct skcipher_request *req);
-
#endif /* _CRYPTO_GLUE_HELPER_H */
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 12/21] crypto: x86/des - drop CTR mode implementation
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (10 preceding siblings ...)
2021-01-05 16:47 ` [PATCH v2 11/21] crypto: x86/glue-helper - drop CTR helper routines Ard Biesheuvel
@ 2021-01-05 16:48 ` Ard Biesheuvel
2021-01-05 16:48 ` [PATCH v2 13/21] crypto: x86/blowfish " Ard Biesheuvel
` (9 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:48 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
DES or Triple DES in counter mode is never used in the kernel, so there
is no point in keeping an accelerated implementation around.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/des3_ede_glue.c | 104 --------------------
crypto/Kconfig | 1 +
2 files changed, 1 insertion(+), 104 deletions(-)
diff --git a/arch/x86/crypto/des3_ede_glue.c b/arch/x86/crypto/des3_ede_glue.c
index 89830e531350..e7cb68a3db3b 100644
--- a/arch/x86/crypto/des3_ede_glue.c
+++ b/arch/x86/crypto/des3_ede_glue.c
@@ -6,8 +6,6 @@
*
* CBC & ECB parts based on code (crypto/cbc.c,ecb.c) by:
* Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
- * CTR part based on code (crypto/ctr.c) by:
- * (C) Copyright IBM Corp. 2007 - Joy Latten <latten@us.ibm.com>
*/
#include <crypto/algapi.h>
@@ -253,94 +251,6 @@ static int cbc_decrypt(struct skcipher_request *req)
return err;
}
-static void ctr_crypt_final(struct des3_ede_x86_ctx *ctx,
- struct skcipher_walk *walk)
-{
- u8 *ctrblk = walk->iv;
- u8 keystream[DES3_EDE_BLOCK_SIZE];
- u8 *src = walk->src.virt.addr;
- u8 *dst = walk->dst.virt.addr;
- unsigned int nbytes = walk->nbytes;
-
- des3_ede_enc_blk(ctx, keystream, ctrblk);
- crypto_xor_cpy(dst, keystream, src, nbytes);
-
- crypto_inc(ctrblk, DES3_EDE_BLOCK_SIZE);
-}
-
-static unsigned int __ctr_crypt(struct des3_ede_x86_ctx *ctx,
- struct skcipher_walk *walk)
-{
- unsigned int bsize = DES3_EDE_BLOCK_SIZE;
- unsigned int nbytes = walk->nbytes;
- __be64 *src = (__be64 *)walk->src.virt.addr;
- __be64 *dst = (__be64 *)walk->dst.virt.addr;
- u64 ctrblk = be64_to_cpu(*(__be64 *)walk->iv);
- __be64 ctrblocks[3];
-
- /* Process four block batch */
- if (nbytes >= bsize * 3) {
- do {
- /* create ctrblks for parallel encrypt */
- ctrblocks[0] = cpu_to_be64(ctrblk++);
- ctrblocks[1] = cpu_to_be64(ctrblk++);
- ctrblocks[2] = cpu_to_be64(ctrblk++);
-
- des3_ede_enc_blk_3way(ctx, (u8 *)ctrblocks,
- (u8 *)ctrblocks);
-
- dst[0] = src[0] ^ ctrblocks[0];
- dst[1] = src[1] ^ ctrblocks[1];
- dst[2] = src[2] ^ ctrblocks[2];
-
- src += 3;
- dst += 3;
- } while ((nbytes -= bsize * 3) >= bsize * 3);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Handle leftovers */
- do {
- ctrblocks[0] = cpu_to_be64(ctrblk++);
-
- des3_ede_enc_blk(ctx, (u8 *)ctrblocks, (u8 *)ctrblocks);
-
- dst[0] = src[0] ^ ctrblocks[0];
-
- src += 1;
- dst += 1;
- } while ((nbytes -= bsize) >= bsize);
-
-done:
- *(__be64 *)walk->iv = cpu_to_be64(ctrblk);
- return nbytes;
-}
-
-static int ctr_crypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct des3_ede_x86_ctx *ctx = crypto_skcipher_ctx(tfm);
- struct skcipher_walk walk;
- unsigned int nbytes;
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
-
- while ((nbytes = walk.nbytes) >= DES3_EDE_BLOCK_SIZE) {
- nbytes = __ctr_crypt(ctx, &walk);
- err = skcipher_walk_done(&walk, nbytes);
- }
-
- if (nbytes) {
- ctr_crypt_final(ctx, &walk);
- err = skcipher_walk_done(&walk, 0);
- }
-
- return err;
-}
-
static int des3_ede_x86_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int keylen)
{
@@ -428,20 +338,6 @@ static struct skcipher_alg des3_ede_skciphers[] = {
.setkey = des3_ede_x86_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "ctr(des3_ede)",
- .base.cra_driver_name = "ctr-des3_ede-asm",
- .base.cra_priority = 300,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct des3_ede_x86_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = DES3_EDE_KEY_SIZE,
- .max_keysize = DES3_EDE_KEY_SIZE,
- .ivsize = DES3_EDE_BLOCK_SIZE,
- .chunksize = DES3_EDE_BLOCK_SIZE,
- .setkey = des3_ede_x86_setkey_skcipher,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
}
};
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 606f94079f05..5e820a57d138 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1427,6 +1427,7 @@ config CRYPTO_DES3_EDE_X86_64
depends on X86 && 64BIT
select CRYPTO_SKCIPHER
select CRYPTO_LIB_DES
+ imply CRYPTO_CTR
help
Triple DES EDE (FIPS 46-3) algorithm.
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 13/21] crypto: x86/blowfish - drop CTR mode implementation
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (11 preceding siblings ...)
2021-01-05 16:48 ` [PATCH v2 12/21] crypto: x86/des - drop CTR mode implementation Ard Biesheuvel
@ 2021-01-05 16:48 ` Ard Biesheuvel
2021-01-05 16:48 ` [PATCH v2 14/21] crypto: x86 - add some helper macros for ECB and CBC modes Ard Biesheuvel
` (8 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:48 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Blowfish in counter mode is never used in the kernel, so there
is no point in keeping an accelerated implementation around.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/blowfish_glue.c | 107 --------------------
crypto/Kconfig | 1 +
2 files changed, 1 insertion(+), 107 deletions(-)
diff --git a/arch/x86/crypto/blowfish_glue.c b/arch/x86/crypto/blowfish_glue.c
index cedfdba69ce3..a880e0b1c255 100644
--- a/arch/x86/crypto/blowfish_glue.c
+++ b/arch/x86/crypto/blowfish_glue.c
@@ -6,8 +6,6 @@
*
* CBC & ECB parts based on code (crypto/cbc.c,ecb.c) by:
* Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
- * CTR part based on code (crypto/ctr.c) by:
- * (C) Copyright IBM Corp. 2007 - Joy Latten <latten@us.ibm.com>
*/
#include <crypto/algapi.h>
@@ -247,97 +245,6 @@ static int cbc_decrypt(struct skcipher_request *req)
return err;
}
-static void ctr_crypt_final(struct bf_ctx *ctx, struct skcipher_walk *walk)
-{
- u8 *ctrblk = walk->iv;
- u8 keystream[BF_BLOCK_SIZE];
- u8 *src = walk->src.virt.addr;
- u8 *dst = walk->dst.virt.addr;
- unsigned int nbytes = walk->nbytes;
-
- blowfish_enc_blk(ctx, keystream, ctrblk);
- crypto_xor_cpy(dst, keystream, src, nbytes);
-
- crypto_inc(ctrblk, BF_BLOCK_SIZE);
-}
-
-static unsigned int __ctr_crypt(struct bf_ctx *ctx, struct skcipher_walk *walk)
-{
- unsigned int bsize = BF_BLOCK_SIZE;
- unsigned int nbytes = walk->nbytes;
- u64 *src = (u64 *)walk->src.virt.addr;
- u64 *dst = (u64 *)walk->dst.virt.addr;
- u64 ctrblk = be64_to_cpu(*(__be64 *)walk->iv);
- __be64 ctrblocks[4];
-
- /* Process four block batch */
- if (nbytes >= bsize * 4) {
- do {
- if (dst != src) {
- dst[0] = src[0];
- dst[1] = src[1];
- dst[2] = src[2];
- dst[3] = src[3];
- }
-
- /* create ctrblks for parallel encrypt */
- ctrblocks[0] = cpu_to_be64(ctrblk++);
- ctrblocks[1] = cpu_to_be64(ctrblk++);
- ctrblocks[2] = cpu_to_be64(ctrblk++);
- ctrblocks[3] = cpu_to_be64(ctrblk++);
-
- blowfish_enc_blk_xor_4way(ctx, (u8 *)dst,
- (u8 *)ctrblocks);
-
- src += 4;
- dst += 4;
- } while ((nbytes -= bsize * 4) >= bsize * 4);
-
- if (nbytes < bsize)
- goto done;
- }
-
- /* Handle leftovers */
- do {
- if (dst != src)
- *dst = *src;
-
- ctrblocks[0] = cpu_to_be64(ctrblk++);
-
- blowfish_enc_blk_xor(ctx, (u8 *)dst, (u8 *)ctrblocks);
-
- src += 1;
- dst += 1;
- } while ((nbytes -= bsize) >= bsize);
-
-done:
- *(__be64 *)walk->iv = cpu_to_be64(ctrblk);
- return nbytes;
-}
-
-static int ctr_crypt(struct skcipher_request *req)
-{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct bf_ctx *ctx = crypto_skcipher_ctx(tfm);
- struct skcipher_walk walk;
- unsigned int nbytes;
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
-
- while ((nbytes = walk.nbytes) >= BF_BLOCK_SIZE) {
- nbytes = __ctr_crypt(ctx, &walk);
- err = skcipher_walk_done(&walk, nbytes);
- }
-
- if (nbytes) {
- ctr_crypt_final(ctx, &walk);
- err = skcipher_walk_done(&walk, 0);
- }
-
- return err;
-}
-
static struct crypto_alg bf_cipher_alg = {
.cra_name = "blowfish",
.cra_driver_name = "blowfish-asm",
@@ -384,20 +291,6 @@ static struct skcipher_alg bf_skcipher_algs[] = {
.setkey = blowfish_setkey_skcipher,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
- }, {
- .base.cra_name = "ctr(blowfish)",
- .base.cra_driver_name = "ctr-blowfish-asm",
- .base.cra_priority = 300,
- .base.cra_blocksize = 1,
- .base.cra_ctxsize = sizeof(struct bf_ctx),
- .base.cra_module = THIS_MODULE,
- .min_keysize = BF_MIN_KEY_SIZE,
- .max_keysize = BF_MAX_KEY_SIZE,
- .ivsize = BF_BLOCK_SIZE,
- .chunksize = BF_BLOCK_SIZE,
- .setkey = blowfish_setkey_skcipher,
- .encrypt = ctr_crypt,
- .decrypt = ctr_crypt,
},
};
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 5e820a57d138..24c0e001d06d 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1255,6 +1255,7 @@ config CRYPTO_BLOWFISH_X86_64
depends on X86 && 64BIT
select CRYPTO_SKCIPHER
select CRYPTO_BLOWFISH_COMMON
+ imply CRYPTO_CTR
help
Blowfish cipher algorithm (x86_64), by Bruce Schneier.
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 14/21] crypto: x86 - add some helper macros for ECB and CBC modes
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (12 preceding siblings ...)
2021-01-05 16:48 ` [PATCH v2 13/21] crypto: x86/blowfish " Ard Biesheuvel
@ 2021-01-05 16:48 ` Ard Biesheuvel
2021-01-05 16:48 ` [PATCH v2 15/21] crypto: x86/camellia - drop dependency on glue helper Ard Biesheuvel
` (7 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:48 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
The x86 glue helper module is starting to show its age:
- It relies heavily on function pointers to invoke asm helper functions that
operate on fixed input sizes that are relatively small. This means the
performance is severely impacted by retpolines.
- It goes to great lengths to amortize the cost of kernel_fpu_begin()/end()
over as much work as possible, which is no longer necessary now that FPU
save/restore is done lazily, and doing so may cause unbounded scheduling
blackouts due to the fact that enabling the FPU in kernel mode disables
preemption.
- The CBC mode decryption helper makes backward strides through the input, in
order to avoid a single block size memcpy() between chunks. Consuming the
input in this manner is highly likely to defeat any hardware prefetchers,
so it is better to go through the data linearly, and perform the extra
memcpy() where needed (which is turned into direct loads and stores by the
compiler anyway). Note that benchmarks won't show this effect, given that
the memory they use is always cache hot.
- It implements blockwise XOR in terms of le128 pointers, which imply an
alignment that is not guaranteed by the API, violating the C standard.
GCC does not seem to be smart enough to elide the indirect calls when the
function pointers are passed as arguments to static inline helper routines
modeled after the existing ones. So instead, let's create some CPP macros
that encapsulate the core of the ECB and CBC processing, so we can wire
them up for existing users of the glue helper module, i.e., Camellia,
Serpent, Twofish and CAST6.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/ecb_cbc_helpers.h | 76 ++++++++++++++++++++
1 file changed, 76 insertions(+)
diff --git a/arch/x86/crypto/ecb_cbc_helpers.h b/arch/x86/crypto/ecb_cbc_helpers.h
new file mode 100644
index 000000000000..eaa15c7b29d6
--- /dev/null
+++ b/arch/x86/crypto/ecb_cbc_helpers.h
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _CRYPTO_ECB_CBC_HELPER_H
+#define _CRYPTO_ECB_CBC_HELPER_H
+
+#include <crypto/internal/skcipher.h>
+#include <asm/fpu/api.h>
+
+/*
+ * Mode helpers to instantiate parameterized skcipher ECB/CBC modes without
+ * having to rely on indirect calls and retpolines.
+ */
+
+#define ECB_WALK_START(req, bsize, fpu_blocks) do { \
+ void *ctx = crypto_skcipher_ctx(crypto_skcipher_reqtfm(req)); \
+ const int __bsize = (bsize); \
+ struct skcipher_walk walk; \
+ int err = skcipher_walk_virt(&walk, (req), false); \
+ while (walk.nbytes > 0) { \
+ unsigned int nbytes = walk.nbytes; \
+ bool do_fpu = (fpu_blocks) != -1 && \
+ nbytes >= (fpu_blocks) * __bsize; \
+ const u8 *src = walk.src.virt.addr; \
+ u8 *dst = walk.dst.virt.addr; \
+ u8 __maybe_unused buf[(bsize)]; \
+ if (do_fpu) kernel_fpu_begin()
+
+#define CBC_WALK_START(req, bsize, fpu_blocks) \
+ ECB_WALK_START(req, bsize, fpu_blocks)
+
+#define ECB_WALK_ADVANCE(blocks) do { \
+ dst += (blocks) * __bsize; \
+ src += (blocks) * __bsize; \
+ nbytes -= (blocks) * __bsize; \
+} while (0)
+
+#define ECB_BLOCK(blocks, func) do { \
+ while (nbytes >= (blocks) * __bsize) { \
+ (func)(ctx, dst, src); \
+ ECB_WALK_ADVANCE(blocks); \
+ } \
+} while (0)
+
+#define CBC_ENC_BLOCK(func) do { \
+ const u8 *__iv = walk.iv; \
+ while (nbytes >= __bsize) { \
+ crypto_xor_cpy(dst, src, __iv, __bsize); \
+ (func)(ctx, dst, dst); \
+ __iv = dst; \
+ ECB_WALK_ADVANCE(1); \
+ } \
+ memcpy(walk.iv, __iv, __bsize); \
+} while (0)
+
+#define CBC_DEC_BLOCK(blocks, func) do { \
+ while (nbytes >= (blocks) * __bsize) { \
+ const u8 *__iv = src + ((blocks) - 1) * __bsize; \
+ if (dst == src) \
+ __iv = memcpy(buf, __iv, __bsize); \
+ (func)(ctx, dst, src); \
+ crypto_xor(dst, walk.iv, __bsize); \
+ memcpy(walk.iv, __iv, __bsize); \
+ ECB_WALK_ADVANCE(blocks); \
+ } \
+} while (0)
+
+#define ECB_WALK_END() \
+ if (do_fpu) kernel_fpu_end(); \
+ err = skcipher_walk_done(&walk, nbytes); \
+ } \
+ return err; \
+} while (0)
+
+#define CBC_WALK_END() ECB_WALK_END()
+
+#endif
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 15/21] crypto: x86/camellia - drop dependency on glue helper
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (13 preceding siblings ...)
2021-01-05 16:48 ` [PATCH v2 14/21] crypto: x86 - add some helper macros for ECB and CBC modes Ard Biesheuvel
@ 2021-01-05 16:48 ` Ard Biesheuvel
2021-01-05 16:48 ` [PATCH v2 16/21] crypto: x86/serpent " Ard Biesheuvel
` (6 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:48 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Replace the glue helper dependency with implementations of ECB and CBC
based on the new CPP macros, which avoid the need for indirect calls.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/camellia_aesni_avx2_glue.c | 85 ++++++--------------
arch/x86/crypto/camellia_aesni_avx_glue.c | 73 +++++------------
arch/x86/crypto/camellia_glue.c | 75 ++++++-----------
crypto/Kconfig | 2 -
4 files changed, 67 insertions(+), 168 deletions(-)
diff --git a/arch/x86/crypto/camellia_aesni_avx2_glue.c b/arch/x86/crypto/camellia_aesni_avx2_glue.c
index 8f25a2a6222e..ef5c0f094584 100644
--- a/arch/x86/crypto/camellia_aesni_avx2_glue.c
+++ b/arch/x86/crypto/camellia_aesni_avx2_glue.c
@@ -6,7 +6,6 @@
*/
#include <asm/crypto/camellia.h>
-#include <asm/crypto/glue_helper.h>
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <linux/crypto.h>
@@ -14,6 +13,8 @@
#include <linux/module.h>
#include <linux/types.h>
+#include "ecb_cbc_helpers.h"
+
#define CAMELLIA_AESNI_PARALLEL_BLOCKS 16
#define CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS 32
@@ -23,63 +24,6 @@ asmlinkage void camellia_ecb_dec_32way(const void *ctx, u8 *dst, const u8 *src);
asmlinkage void camellia_cbc_dec_32way(const void *ctx, u8 *dst, const u8 *src);
-static const struct common_glue_ctx camellia_enc = {
- .num_funcs = 4,
- .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
- .fn_u = { .ecb = camellia_ecb_enc_32way }
- }, {
- .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
- .fn_u = { .ecb = camellia_ecb_enc_16way }
- }, {
- .num_blocks = 2,
- .fn_u = { .ecb = camellia_enc_blk_2way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = camellia_enc_blk }
- } }
-};
-
-static const struct common_glue_ctx camellia_dec = {
- .num_funcs = 4,
- .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
- .fn_u = { .ecb = camellia_ecb_dec_32way }
- }, {
- .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
- .fn_u = { .ecb = camellia_ecb_dec_16way }
- }, {
- .num_blocks = 2,
- .fn_u = { .ecb = camellia_dec_blk_2way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = camellia_dec_blk }
- } }
-};
-
-static const struct common_glue_ctx camellia_dec_cbc = {
- .num_funcs = 4,
- .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS,
- .fn_u = { .cbc = camellia_cbc_dec_32way }
- }, {
- .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
- .fn_u = { .cbc = camellia_cbc_dec_16way }
- }, {
- .num_blocks = 2,
- .fn_u = { .cbc = camellia_decrypt_cbc_2way }
- }, {
- .num_blocks = 1,
- .fn_u = { .cbc = camellia_dec_blk }
- } }
-};
-
static int camellia_setkey(struct crypto_skcipher *tfm, const u8 *key,
unsigned int keylen)
{
@@ -88,22 +32,39 @@ static int camellia_setkey(struct crypto_skcipher *tfm, const u8 *key,
static int ecb_encrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&camellia_enc, req);
+ ECB_WALK_START(req, CAMELLIA_BLOCK_SIZE, CAMELLIA_AESNI_PARALLEL_BLOCKS);
+ ECB_BLOCK(CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS, camellia_ecb_enc_32way);
+ ECB_BLOCK(CAMELLIA_AESNI_PARALLEL_BLOCKS, camellia_ecb_enc_16way);
+ ECB_BLOCK(2, camellia_enc_blk_2way);
+ ECB_BLOCK(1, camellia_enc_blk);
+ ECB_WALK_END();
}
static int ecb_decrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&camellia_dec, req);
+ ECB_WALK_START(req, CAMELLIA_BLOCK_SIZE, CAMELLIA_AESNI_PARALLEL_BLOCKS);
+ ECB_BLOCK(CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS, camellia_ecb_dec_32way);
+ ECB_BLOCK(CAMELLIA_AESNI_PARALLEL_BLOCKS, camellia_ecb_dec_16way);
+ ECB_BLOCK(2, camellia_dec_blk_2way);
+ ECB_BLOCK(1, camellia_dec_blk);
+ ECB_WALK_END();
}
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(camellia_enc_blk, req);
+ CBC_WALK_START(req, CAMELLIA_BLOCK_SIZE, -1);
+ CBC_ENC_BLOCK(camellia_enc_blk);
+ CBC_WALK_END();
}
static int cbc_decrypt(struct skcipher_request *req)
{
- return glue_cbc_decrypt_req_128bit(&camellia_dec_cbc, req);
+ CBC_WALK_START(req, CAMELLIA_BLOCK_SIZE, CAMELLIA_AESNI_PARALLEL_BLOCKS);
+ CBC_DEC_BLOCK(CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS, camellia_cbc_dec_32way);
+ CBC_DEC_BLOCK(CAMELLIA_AESNI_PARALLEL_BLOCKS, camellia_cbc_dec_16way);
+ CBC_DEC_BLOCK(2, camellia_decrypt_cbc_2way);
+ CBC_DEC_BLOCK(1, camellia_dec_blk);
+ CBC_WALK_END();
}
static struct skcipher_alg camellia_algs[] = {
diff --git a/arch/x86/crypto/camellia_aesni_avx_glue.c b/arch/x86/crypto/camellia_aesni_avx_glue.c
index 22a89cdfedfb..68fed0a79889 100644
--- a/arch/x86/crypto/camellia_aesni_avx_glue.c
+++ b/arch/x86/crypto/camellia_aesni_avx_glue.c
@@ -6,7 +6,6 @@
*/
#include <asm/crypto/camellia.h>
-#include <asm/crypto/glue_helper.h>
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <linux/crypto.h>
@@ -14,6 +13,8 @@
#include <linux/module.h>
#include <linux/types.h>
+#include "ecb_cbc_helpers.h"
+
#define CAMELLIA_AESNI_PARALLEL_BLOCKS 16
/* 16-way parallel cipher functions (avx/aes-ni) */
@@ -26,54 +27,6 @@ EXPORT_SYMBOL_GPL(camellia_ecb_dec_16way);
asmlinkage void camellia_cbc_dec_16way(const void *ctx, u8 *dst, const u8 *src);
EXPORT_SYMBOL_GPL(camellia_cbc_dec_16way);
-static const struct common_glue_ctx camellia_enc = {
- .num_funcs = 3,
- .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
- .fn_u = { .ecb = camellia_ecb_enc_16way }
- }, {
- .num_blocks = 2,
- .fn_u = { .ecb = camellia_enc_blk_2way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = camellia_enc_blk }
- } }
-};
-
-static const struct common_glue_ctx camellia_dec = {
- .num_funcs = 3,
- .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
- .fn_u = { .ecb = camellia_ecb_dec_16way }
- }, {
- .num_blocks = 2,
- .fn_u = { .ecb = camellia_dec_blk_2way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = camellia_dec_blk }
- } }
-};
-
-static const struct common_glue_ctx camellia_dec_cbc = {
- .num_funcs = 3,
- .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS,
- .fn_u = { .cbc = camellia_cbc_dec_16way }
- }, {
- .num_blocks = 2,
- .fn_u = { .cbc = camellia_decrypt_cbc_2way }
- }, {
- .num_blocks = 1,
- .fn_u = { .cbc = camellia_dec_blk }
- } }
-};
-
static int camellia_setkey(struct crypto_skcipher *tfm, const u8 *key,
unsigned int keylen)
{
@@ -82,22 +35,36 @@ static int camellia_setkey(struct crypto_skcipher *tfm, const u8 *key,
static int ecb_encrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&camellia_enc, req);
+ ECB_WALK_START(req, CAMELLIA_BLOCK_SIZE, CAMELLIA_AESNI_PARALLEL_BLOCKS);
+ ECB_BLOCK(CAMELLIA_AESNI_PARALLEL_BLOCKS, camellia_ecb_enc_16way);
+ ECB_BLOCK(2, camellia_enc_blk_2way);
+ ECB_BLOCK(1, camellia_enc_blk);
+ ECB_WALK_END();
}
static int ecb_decrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&camellia_dec, req);
+ ECB_WALK_START(req, CAMELLIA_BLOCK_SIZE, CAMELLIA_AESNI_PARALLEL_BLOCKS);
+ ECB_BLOCK(CAMELLIA_AESNI_PARALLEL_BLOCKS, camellia_ecb_dec_16way);
+ ECB_BLOCK(2, camellia_dec_blk_2way);
+ ECB_BLOCK(1, camellia_dec_blk);
+ ECB_WALK_END();
}
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(camellia_enc_blk, req);
+ CBC_WALK_START(req, CAMELLIA_BLOCK_SIZE, -1);
+ CBC_ENC_BLOCK(camellia_enc_blk);
+ CBC_WALK_END();
}
static int cbc_decrypt(struct skcipher_request *req)
{
- return glue_cbc_decrypt_req_128bit(&camellia_dec_cbc, req);
+ CBC_WALK_START(req, CAMELLIA_BLOCK_SIZE, CAMELLIA_AESNI_PARALLEL_BLOCKS);
+ CBC_DEC_BLOCK(CAMELLIA_AESNI_PARALLEL_BLOCKS, camellia_cbc_dec_16way);
+ CBC_DEC_BLOCK(2, camellia_decrypt_cbc_2way);
+ CBC_DEC_BLOCK(1, camellia_dec_blk);
+ CBC_WALK_END();
}
static struct skcipher_alg camellia_algs[] = {
diff --git a/arch/x86/crypto/camellia_glue.c b/arch/x86/crypto/camellia_glue.c
index fefeedf2b33d..0bc00ce68484 100644
--- a/arch/x86/crypto/camellia_glue.c
+++ b/arch/x86/crypto/camellia_glue.c
@@ -15,7 +15,8 @@
#include <linux/types.h>
#include <crypto/algapi.h>
#include <asm/crypto/camellia.h>
-#include <asm/crypto/glue_helper.h>
+
+#include "ecb_cbc_helpers.h"
/* regular block cipher functions */
asmlinkage void __camellia_enc_blk(const void *ctx, u8 *dst, const u8 *src,
@@ -1262,75 +1263,47 @@ static int camellia_setkey_skcipher(struct crypto_skcipher *tfm, const u8 *key,
return camellia_setkey(&tfm->base, key, key_len);
}
-void camellia_decrypt_cbc_2way(const void *ctx, u8 *d, const u8 *s)
+void camellia_decrypt_cbc_2way(const void *ctx, u8 *dst, const u8 *src)
{
- u128 *dst = (u128 *)d;
- const u128 *src = (const u128 *)s;
- u128 iv = *src;
-
- camellia_dec_blk_2way(ctx, (u8 *)dst, (u8 *)src);
+ u8 buf[CAMELLIA_BLOCK_SIZE];
+ const u8 *iv = src;
- u128_xor(&dst[1], &dst[1], &iv);
+ if (dst == src)
+ iv = memcpy(buf, iv, sizeof(buf));
+ camellia_dec_blk_2way(ctx, dst, src);
+ crypto_xor(dst + CAMELLIA_BLOCK_SIZE, iv, CAMELLIA_BLOCK_SIZE);
}
EXPORT_SYMBOL_GPL(camellia_decrypt_cbc_2way);
-static const struct common_glue_ctx camellia_enc = {
- .num_funcs = 2,
- .fpu_blocks_limit = -1,
-
- .funcs = { {
- .num_blocks = 2,
- .fn_u = { .ecb = camellia_enc_blk_2way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = camellia_enc_blk }
- } }
-};
-
-static const struct common_glue_ctx camellia_dec = {
- .num_funcs = 2,
- .fpu_blocks_limit = -1,
-
- .funcs = { {
- .num_blocks = 2,
- .fn_u = { .ecb = camellia_dec_blk_2way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = camellia_dec_blk }
- } }
-};
-
-static const struct common_glue_ctx camellia_dec_cbc = {
- .num_funcs = 2,
- .fpu_blocks_limit = -1,
-
- .funcs = { {
- .num_blocks = 2,
- .fn_u = { .cbc = camellia_decrypt_cbc_2way }
- }, {
- .num_blocks = 1,
- .fn_u = { .cbc = camellia_dec_blk }
- } }
-};
-
static int ecb_encrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&camellia_enc, req);
+ ECB_WALK_START(req, CAMELLIA_BLOCK_SIZE, -1);
+ ECB_BLOCK(2, camellia_enc_blk_2way);
+ ECB_BLOCK(1, camellia_enc_blk);
+ ECB_WALK_END();
}
static int ecb_decrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&camellia_dec, req);
+ ECB_WALK_START(req, CAMELLIA_BLOCK_SIZE, -1);
+ ECB_BLOCK(2, camellia_dec_blk_2way);
+ ECB_BLOCK(1, camellia_dec_blk);
+ ECB_WALK_END();
}
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(camellia_enc_blk, req);
+ CBC_WALK_START(req, CAMELLIA_BLOCK_SIZE, -1);
+ CBC_ENC_BLOCK(camellia_enc_blk);
+ CBC_WALK_END();
}
static int cbc_decrypt(struct skcipher_request *req)
{
- return glue_cbc_decrypt_req_128bit(&camellia_dec_cbc, req);
+ CBC_WALK_START(req, CAMELLIA_BLOCK_SIZE, -1);
+ CBC_DEC_BLOCK(2, camellia_decrypt_cbc_2way);
+ CBC_DEC_BLOCK(1, camellia_dec_blk);
+ CBC_WALK_END();
}
static struct crypto_alg camellia_cipher_alg = {
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 24c0e001d06d..f8518ff389bb 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1286,7 +1286,6 @@ config CRYPTO_CAMELLIA_X86_64
depends on X86 && 64BIT
depends on CRYPTO
select CRYPTO_SKCIPHER
- select CRYPTO_GLUE_HELPER_X86
imply CRYPTO_CTR
help
Camellia cipher algorithm module (x86_64).
@@ -1305,7 +1304,6 @@ config CRYPTO_CAMELLIA_AESNI_AVX_X86_64
depends on CRYPTO
select CRYPTO_SKCIPHER
select CRYPTO_CAMELLIA_X86_64
- select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SIMD
imply CRYPTO_XTS
help
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 16/21] crypto: x86/serpent - drop dependency on glue helper
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (14 preceding siblings ...)
2021-01-05 16:48 ` [PATCH v2 15/21] crypto: x86/camellia - drop dependency on glue helper Ard Biesheuvel
@ 2021-01-05 16:48 ` Ard Biesheuvel
2021-01-05 16:48 ` [PATCH v2 17/21] crypto: x86/cast5 " Ard Biesheuvel
` (5 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:48 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Replace the glue helper dependency with implementations of ECB and CBC
based on the new CPP macros, which avoid the need for indirect calls.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/serpent_avx2_glue.c | 73 +++++-------------
arch/x86/crypto/serpent_avx_glue.c | 61 ++++-----------
arch/x86/crypto/serpent_sse2_glue.c | 81 ++++++--------------
crypto/Kconfig | 3 -
4 files changed, 61 insertions(+), 157 deletions(-)
diff --git a/arch/x86/crypto/serpent_avx2_glue.c b/arch/x86/crypto/serpent_avx2_glue.c
index 28e542c6512a..261c9ac2d762 100644
--- a/arch/x86/crypto/serpent_avx2_glue.c
+++ b/arch/x86/crypto/serpent_avx2_glue.c
@@ -12,9 +12,10 @@
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <crypto/serpent.h>
-#include <asm/crypto/glue_helper.h>
#include <asm/crypto/serpent-avx.h>
+#include "ecb_cbc_helpers.h"
+
#define SERPENT_AVX2_PARALLEL_BLOCKS 16
/* 16-way AVX2 parallel cipher functions */
@@ -28,72 +29,38 @@ static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
return __serpent_setkey(crypto_skcipher_ctx(tfm), key, keylen);
}
-static const struct common_glue_ctx serpent_enc = {
- .num_funcs = 3,
- .fpu_blocks_limit = 8,
-
- .funcs = { {
- .num_blocks = 16,
- .fn_u = { .ecb = serpent_ecb_enc_16way }
- }, {
- .num_blocks = 8,
- .fn_u = { .ecb = serpent_ecb_enc_8way_avx }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = __serpent_encrypt }
- } }
-};
-
-static const struct common_glue_ctx serpent_dec = {
- .num_funcs = 3,
- .fpu_blocks_limit = 8,
-
- .funcs = { {
- .num_blocks = 16,
- .fn_u = { .ecb = serpent_ecb_dec_16way }
- }, {
- .num_blocks = 8,
- .fn_u = { .ecb = serpent_ecb_dec_8way_avx }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = __serpent_decrypt }
- } }
-};
-
-static const struct common_glue_ctx serpent_dec_cbc = {
- .num_funcs = 3,
- .fpu_blocks_limit = 8,
-
- .funcs = { {
- .num_blocks = 16,
- .fn_u = { .cbc = serpent_cbc_dec_16way }
- }, {
- .num_blocks = 8,
- .fn_u = { .cbc = serpent_cbc_dec_8way_avx }
- }, {
- .num_blocks = 1,
- .fn_u = { .cbc = __serpent_decrypt }
- } }
-};
-
static int ecb_encrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&serpent_enc, req);
+ ECB_WALK_START(req, SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS);
+ ECB_BLOCK(SERPENT_AVX2_PARALLEL_BLOCKS, serpent_ecb_enc_16way);
+ ECB_BLOCK(SERPENT_PARALLEL_BLOCKS, serpent_ecb_enc_8way_avx);
+ ECB_BLOCK(1, __serpent_encrypt);
+ ECB_WALK_END();
}
static int ecb_decrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&serpent_dec, req);
+ ECB_WALK_START(req, SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS);
+ ECB_BLOCK(SERPENT_AVX2_PARALLEL_BLOCKS, serpent_ecb_dec_16way);
+ ECB_BLOCK(SERPENT_PARALLEL_BLOCKS, serpent_ecb_dec_8way_avx);
+ ECB_BLOCK(1, __serpent_decrypt);
+ ECB_WALK_END();
}
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(__serpent_encrypt, req);
+ CBC_WALK_START(req, SERPENT_BLOCK_SIZE, -1);
+ CBC_ENC_BLOCK(__serpent_encrypt);
+ CBC_WALK_END();
}
static int cbc_decrypt(struct skcipher_request *req)
{
- return glue_cbc_decrypt_req_128bit(&serpent_dec_cbc, req);
+ CBC_WALK_START(req, SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS);
+ CBC_DEC_BLOCK(SERPENT_AVX2_PARALLEL_BLOCKS, serpent_cbc_dec_16way);
+ CBC_DEC_BLOCK(SERPENT_PARALLEL_BLOCKS, serpent_cbc_dec_8way_avx);
+ CBC_DEC_BLOCK(1, __serpent_decrypt);
+ CBC_WALK_END();
}
static struct skcipher_alg serpent_algs[] = {
diff --git a/arch/x86/crypto/serpent_avx_glue.c b/arch/x86/crypto/serpent_avx_glue.c
index aa4605baf9d4..5fe01d2a5b1d 100644
--- a/arch/x86/crypto/serpent_avx_glue.c
+++ b/arch/x86/crypto/serpent_avx_glue.c
@@ -15,9 +15,10 @@
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <crypto/serpent.h>
-#include <asm/crypto/glue_helper.h>
#include <asm/crypto/serpent-avx.h>
+#include "ecb_cbc_helpers.h"
+
/* 8-way parallel cipher functions */
asmlinkage void serpent_ecb_enc_8way_avx(const void *ctx, u8 *dst,
const u8 *src);
@@ -37,63 +38,35 @@ static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
return __serpent_setkey(crypto_skcipher_ctx(tfm), key, keylen);
}
-static const struct common_glue_ctx serpent_enc = {
- .num_funcs = 2,
- .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .ecb = serpent_ecb_enc_8way_avx }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = __serpent_encrypt }
- } }
-};
-
-static const struct common_glue_ctx serpent_dec = {
- .num_funcs = 2,
- .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .ecb = serpent_ecb_dec_8way_avx }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = __serpent_decrypt }
- } }
-};
-
-static const struct common_glue_ctx serpent_dec_cbc = {
- .num_funcs = 2,
- .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .cbc = serpent_cbc_dec_8way_avx }
- }, {
- .num_blocks = 1,
- .fn_u = { .cbc = __serpent_decrypt }
- } }
-};
-
static int ecb_encrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&serpent_enc, req);
+ ECB_WALK_START(req, SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS);
+ ECB_BLOCK(SERPENT_PARALLEL_BLOCKS, serpent_ecb_enc_8way_avx);
+ ECB_BLOCK(1, __serpent_encrypt);
+ ECB_WALK_END();
}
static int ecb_decrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&serpent_dec, req);
+ ECB_WALK_START(req, SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS);
+ ECB_BLOCK(SERPENT_PARALLEL_BLOCKS, serpent_ecb_dec_8way_avx);
+ ECB_BLOCK(1, __serpent_decrypt);
+ ECB_WALK_END();
}
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(__serpent_encrypt, req);
+ CBC_WALK_START(req, SERPENT_BLOCK_SIZE, -1);
+ CBC_ENC_BLOCK(__serpent_encrypt);
+ CBC_WALK_END();
}
static int cbc_decrypt(struct skcipher_request *req)
{
- return glue_cbc_decrypt_req_128bit(&serpent_dec_cbc, req);
+ CBC_WALK_START(req, SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS);
+ CBC_DEC_BLOCK(SERPENT_PARALLEL_BLOCKS, serpent_cbc_dec_8way_avx);
+ CBC_DEC_BLOCK(1, __serpent_decrypt);
+ CBC_WALK_END();
}
static struct skcipher_alg serpent_algs[] = {
diff --git a/arch/x86/crypto/serpent_sse2_glue.c b/arch/x86/crypto/serpent_sse2_glue.c
index 9acb3bf28feb..e28d60949c16 100644
--- a/arch/x86/crypto/serpent_sse2_glue.c
+++ b/arch/x86/crypto/serpent_sse2_glue.c
@@ -21,7 +21,8 @@
#include <crypto/internal/simd.h>
#include <crypto/serpent.h>
#include <asm/crypto/serpent-sse2.h>
-#include <asm/crypto/glue_helper.h>
+
+#include "ecb_cbc_helpers.h"
static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
@@ -29,80 +30,46 @@ static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
return __serpent_setkey(crypto_skcipher_ctx(tfm), key, keylen);
}
-static void serpent_decrypt_cbc_xway(const void *ctx, u8 *d, const u8 *s)
+static void serpent_decrypt_cbc_xway(const void *ctx, u8 *dst, const u8 *src)
{
- u128 ivs[SERPENT_PARALLEL_BLOCKS - 1];
- u128 *dst = (u128 *)d;
- const u128 *src = (const u128 *)s;
- unsigned int j;
-
- for (j = 0; j < SERPENT_PARALLEL_BLOCKS - 1; j++)
- ivs[j] = src[j];
+ u8 buf[SERPENT_PARALLEL_BLOCKS - 1][SERPENT_BLOCK_SIZE];
+ const u8 *s = src;
- serpent_dec_blk_xway(ctx, (u8 *)dst, (u8 *)src);
-
- for (j = 0; j < SERPENT_PARALLEL_BLOCKS - 1; j++)
- u128_xor(dst + (j + 1), dst + (j + 1), ivs + j);
+ if (dst == src)
+ s = memcpy(buf, src, sizeof(buf));
+ serpent_dec_blk_xway(ctx, dst, src);
+ crypto_xor(dst + SERPENT_BLOCK_SIZE, s, sizeof(buf));
}
-static const struct common_glue_ctx serpent_enc = {
- .num_funcs = 2,
- .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .ecb = serpent_enc_blk_xway }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = __serpent_encrypt }
- } }
-};
-
-static const struct common_glue_ctx serpent_dec = {
- .num_funcs = 2,
- .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .ecb = serpent_dec_blk_xway }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = __serpent_decrypt }
- } }
-};
-
-static const struct common_glue_ctx serpent_dec_cbc = {
- .num_funcs = 2,
- .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .cbc = serpent_decrypt_cbc_xway }
- }, {
- .num_blocks = 1,
- .fn_u = { .cbc = __serpent_decrypt }
- } }
-};
-
static int ecb_encrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&serpent_enc, req);
+ ECB_WALK_START(req, SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS);
+ ECB_BLOCK(SERPENT_PARALLEL_BLOCKS, serpent_enc_blk_xway);
+ ECB_BLOCK(1, __serpent_encrypt);
+ ECB_WALK_END();
}
static int ecb_decrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&serpent_dec, req);
+ ECB_WALK_START(req, SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS);
+ ECB_BLOCK(SERPENT_PARALLEL_BLOCKS, serpent_dec_blk_xway);
+ ECB_BLOCK(1, __serpent_decrypt);
+ ECB_WALK_END();
}
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(__serpent_encrypt,
- req);
+ CBC_WALK_START(req, SERPENT_BLOCK_SIZE, -1);
+ CBC_ENC_BLOCK(__serpent_encrypt);
+ CBC_WALK_END();
}
static int cbc_decrypt(struct skcipher_request *req)
{
- return glue_cbc_decrypt_req_128bit(&serpent_dec_cbc, req);
+ CBC_WALK_START(req, SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS);
+ CBC_DEC_BLOCK(SERPENT_PARALLEL_BLOCKS, serpent_decrypt_cbc_xway);
+ CBC_DEC_BLOCK(1, __serpent_decrypt);
+ CBC_WALK_END();
}
static struct skcipher_alg serpent_algs[] = {
diff --git a/crypto/Kconfig b/crypto/Kconfig
index f8518ff389bb..29dce7efc443 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1538,7 +1538,6 @@ config CRYPTO_SERPENT_SSE2_X86_64
tristate "Serpent cipher algorithm (x86_64/SSE2)"
depends on X86 && 64BIT
select CRYPTO_SKCIPHER
- select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SERPENT
select CRYPTO_SIMD
imply CRYPTO_CTR
@@ -1558,7 +1557,6 @@ config CRYPTO_SERPENT_SSE2_586
tristate "Serpent cipher algorithm (i586/SSE2)"
depends on X86 && !64BIT
select CRYPTO_SKCIPHER
- select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SERPENT
select CRYPTO_SIMD
imply CRYPTO_CTR
@@ -1578,7 +1576,6 @@ config CRYPTO_SERPENT_AVX_X86_64
tristate "Serpent cipher algorithm (x86_64/AVX)"
depends on X86 && 64BIT
select CRYPTO_SKCIPHER
- select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SERPENT
select CRYPTO_SIMD
imply CRYPTO_XTS
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 17/21] crypto: x86/cast5 - drop dependency on glue helper
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (15 preceding siblings ...)
2021-01-05 16:48 ` [PATCH v2 16/21] crypto: x86/serpent " Ard Biesheuvel
@ 2021-01-05 16:48 ` Ard Biesheuvel
2021-01-05 16:48 ` [PATCH v2 18/21] crypto: x86/cast6 " Ard Biesheuvel
` (4 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:48 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Replace the glue helper dependency with implementations of ECB and CBC
based on the new CPP macros, which avoid the need for indirect calls.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/cast5_avx_glue.c | 184 ++------------------
1 file changed, 17 insertions(+), 167 deletions(-)
diff --git a/arch/x86/crypto/cast5_avx_glue.c b/arch/x86/crypto/cast5_avx_glue.c
index e0d1c7903b29..3976a87f92ad 100644
--- a/arch/x86/crypto/cast5_avx_glue.c
+++ b/arch/x86/crypto/cast5_avx_glue.c
@@ -6,7 +6,6 @@
* <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
*/
-#include <asm/crypto/glue_helper.h>
#include <crypto/algapi.h>
#include <crypto/cast5.h>
#include <crypto/internal/simd.h>
@@ -15,6 +14,8 @@
#include <linux/module.h>
#include <linux/types.h>
+#include "ecb_cbc_helpers.h"
+
#define CAST5_PARALLEL_BLOCKS 16
asmlinkage void cast5_ecb_enc_16way(struct cast5_ctx *ctx, u8 *dst,
@@ -30,186 +31,35 @@ static int cast5_setkey_skcipher(struct crypto_skcipher *tfm, const u8 *key,
return cast5_setkey(&tfm->base, key, keylen);
}
-static inline bool cast5_fpu_begin(bool fpu_enabled, struct skcipher_walk *walk,
- unsigned int nbytes)
-{
- return glue_fpu_begin(CAST5_BLOCK_SIZE, CAST5_PARALLEL_BLOCKS,
- walk, fpu_enabled, nbytes);
-}
-
-static inline void cast5_fpu_end(bool fpu_enabled)
-{
- return glue_fpu_end(fpu_enabled);
-}
-
-static int ecb_crypt(struct skcipher_request *req, bool enc)
-{
- bool fpu_enabled = false;
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct cast5_ctx *ctx = crypto_skcipher_ctx(tfm);
- struct skcipher_walk walk;
- const unsigned int bsize = CAST5_BLOCK_SIZE;
- unsigned int nbytes;
- void (*fn)(struct cast5_ctx *ctx, u8 *dst, const u8 *src);
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
-
- while ((nbytes = walk.nbytes)) {
- u8 *wsrc = walk.src.virt.addr;
- u8 *wdst = walk.dst.virt.addr;
-
- fpu_enabled = cast5_fpu_begin(fpu_enabled, &walk, nbytes);
-
- /* Process multi-block batch */
- if (nbytes >= bsize * CAST5_PARALLEL_BLOCKS) {
- fn = (enc) ? cast5_ecb_enc_16way : cast5_ecb_dec_16way;
- do {
- fn(ctx, wdst, wsrc);
-
- wsrc += bsize * CAST5_PARALLEL_BLOCKS;
- wdst += bsize * CAST5_PARALLEL_BLOCKS;
- nbytes -= bsize * CAST5_PARALLEL_BLOCKS;
- } while (nbytes >= bsize * CAST5_PARALLEL_BLOCKS);
-
- if (nbytes < bsize)
- goto done;
- }
-
- fn = (enc) ? __cast5_encrypt : __cast5_decrypt;
-
- /* Handle leftovers */
- do {
- fn(ctx, wdst, wsrc);
-
- wsrc += bsize;
- wdst += bsize;
- nbytes -= bsize;
- } while (nbytes >= bsize);
-
-done:
- err = skcipher_walk_done(&walk, nbytes);
- }
-
- cast5_fpu_end(fpu_enabled);
- return err;
-}
-
static int ecb_encrypt(struct skcipher_request *req)
{
- return ecb_crypt(req, true);
+ ECB_WALK_START(req, CAST5_BLOCK_SIZE, CAST5_PARALLEL_BLOCKS);
+ ECB_BLOCK(CAST5_PARALLEL_BLOCKS, cast5_ecb_enc_16way);
+ ECB_BLOCK(1, __cast5_encrypt);
+ ECB_WALK_END();
}
static int ecb_decrypt(struct skcipher_request *req)
{
- return ecb_crypt(req, false);
+ ECB_WALK_START(req, CAST5_BLOCK_SIZE, CAST5_PARALLEL_BLOCKS);
+ ECB_BLOCK(CAST5_PARALLEL_BLOCKS, cast5_ecb_dec_16way);
+ ECB_BLOCK(1, __cast5_decrypt);
+ ECB_WALK_END();
}
static int cbc_encrypt(struct skcipher_request *req)
{
- const unsigned int bsize = CAST5_BLOCK_SIZE;
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct cast5_ctx *ctx = crypto_skcipher_ctx(tfm);
- struct skcipher_walk walk;
- unsigned int nbytes;
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
-
- while ((nbytes = walk.nbytes)) {
- u64 *src = (u64 *)walk.src.virt.addr;
- u64 *dst = (u64 *)walk.dst.virt.addr;
- u64 *iv = (u64 *)walk.iv;
-
- do {
- *dst = *src ^ *iv;
- __cast5_encrypt(ctx, (u8 *)dst, (u8 *)dst);
- iv = dst;
- src++;
- dst++;
- nbytes -= bsize;
- } while (nbytes >= bsize);
-
- *(u64 *)walk.iv = *iv;
- err = skcipher_walk_done(&walk, nbytes);
- }
-
- return err;
-}
-
-static unsigned int __cbc_decrypt(struct cast5_ctx *ctx,
- struct skcipher_walk *walk)
-{
- const unsigned int bsize = CAST5_BLOCK_SIZE;
- unsigned int nbytes = walk->nbytes;
- u64 *src = (u64 *)walk->src.virt.addr;
- u64 *dst = (u64 *)walk->dst.virt.addr;
- u64 last_iv;
-
- /* Start of the last block. */
- src += nbytes / bsize - 1;
- dst += nbytes / bsize - 1;
-
- last_iv = *src;
-
- /* Process multi-block batch */
- if (nbytes >= bsize * CAST5_PARALLEL_BLOCKS) {
- do {
- nbytes -= bsize * (CAST5_PARALLEL_BLOCKS - 1);
- src -= CAST5_PARALLEL_BLOCKS - 1;
- dst -= CAST5_PARALLEL_BLOCKS - 1;
-
- cast5_cbc_dec_16way(ctx, (u8 *)dst, (u8 *)src);
-
- nbytes -= bsize;
- if (nbytes < bsize)
- goto done;
-
- *dst ^= *(src - 1);
- src -= 1;
- dst -= 1;
- } while (nbytes >= bsize * CAST5_PARALLEL_BLOCKS);
- }
-
- /* Handle leftovers */
- for (;;) {
- __cast5_decrypt(ctx, (u8 *)dst, (u8 *)src);
-
- nbytes -= bsize;
- if (nbytes < bsize)
- break;
-
- *dst ^= *(src - 1);
- src -= 1;
- dst -= 1;
- }
-
-done:
- *dst ^= *(u64 *)walk->iv;
- *(u64 *)walk->iv = last_iv;
-
- return nbytes;
+ CBC_WALK_START(req, CAST5_BLOCK_SIZE, -1);
+ CBC_ENC_BLOCK(__cast5_encrypt);
+ CBC_WALK_END();
}
static int cbc_decrypt(struct skcipher_request *req)
{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct cast5_ctx *ctx = crypto_skcipher_ctx(tfm);
- bool fpu_enabled = false;
- struct skcipher_walk walk;
- unsigned int nbytes;
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
-
- while ((nbytes = walk.nbytes)) {
- fpu_enabled = cast5_fpu_begin(fpu_enabled, &walk, nbytes);
- nbytes = __cbc_decrypt(ctx, &walk);
- err = skcipher_walk_done(&walk, nbytes);
- }
-
- cast5_fpu_end(fpu_enabled);
- return err;
+ CBC_WALK_START(req, CAST5_BLOCK_SIZE, CAST5_PARALLEL_BLOCKS);
+ CBC_DEC_BLOCK(CAST5_PARALLEL_BLOCKS, cast5_cbc_dec_16way);
+ CBC_DEC_BLOCK(1, __cast5_decrypt);
+ CBC_WALK_END();
}
static struct skcipher_alg cast5_algs[] = {
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 18/21] crypto: x86/cast6 - drop dependency on glue helper
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (16 preceding siblings ...)
2021-01-05 16:48 ` [PATCH v2 17/21] crypto: x86/cast5 " Ard Biesheuvel
@ 2021-01-05 16:48 ` Ard Biesheuvel
2021-01-05 16:48 ` [PATCH v2 19/21] crypto: x86/twofish " Ard Biesheuvel
` (3 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:48 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Replace the glue helper dependency with implementations of ECB and CBC
based on the new CPP macros, which avoid the need for indirect calls.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/cast6_avx_glue.c | 61 ++++++--------------
crypto/Kconfig | 1 -
2 files changed, 17 insertions(+), 45 deletions(-)
diff --git a/arch/x86/crypto/cast6_avx_glue.c b/arch/x86/crypto/cast6_avx_glue.c
index 790efcb6df3b..7e2aea372349 100644
--- a/arch/x86/crypto/cast6_avx_glue.c
+++ b/arch/x86/crypto/cast6_avx_glue.c
@@ -15,7 +15,8 @@
#include <crypto/algapi.h>
#include <crypto/cast6.h>
#include <crypto/internal/simd.h>
-#include <asm/crypto/glue_helper.h>
+
+#include "ecb_cbc_helpers.h"
#define CAST6_PARALLEL_BLOCKS 8
@@ -30,63 +31,35 @@ static int cast6_setkey_skcipher(struct crypto_skcipher *tfm,
return cast6_setkey(&tfm->base, key, keylen);
}
-static const struct common_glue_ctx cast6_enc = {
- .num_funcs = 2,
- .fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAST6_PARALLEL_BLOCKS,
- .fn_u = { .ecb = cast6_ecb_enc_8way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = __cast6_encrypt }
- } }
-};
-
-static const struct common_glue_ctx cast6_dec = {
- .num_funcs = 2,
- .fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAST6_PARALLEL_BLOCKS,
- .fn_u = { .ecb = cast6_ecb_dec_8way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = __cast6_decrypt }
- } }
-};
-
-static const struct common_glue_ctx cast6_dec_cbc = {
- .num_funcs = 2,
- .fpu_blocks_limit = CAST6_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = CAST6_PARALLEL_BLOCKS,
- .fn_u = { .cbc = cast6_cbc_dec_8way }
- }, {
- .num_blocks = 1,
- .fn_u = { .cbc = __cast6_decrypt }
- } }
-};
-
static int ecb_encrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&cast6_enc, req);
+ ECB_WALK_START(req, CAST6_BLOCK_SIZE, CAST6_PARALLEL_BLOCKS);
+ ECB_BLOCK(CAST6_PARALLEL_BLOCKS, cast6_ecb_enc_8way);
+ ECB_BLOCK(1, __cast6_encrypt);
+ ECB_WALK_END();
}
static int ecb_decrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&cast6_dec, req);
+ ECB_WALK_START(req, CAST6_BLOCK_SIZE, CAST6_PARALLEL_BLOCKS);
+ ECB_BLOCK(CAST6_PARALLEL_BLOCKS, cast6_ecb_dec_8way);
+ ECB_BLOCK(1, __cast6_decrypt);
+ ECB_WALK_END();
}
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(__cast6_encrypt, req);
+ CBC_WALK_START(req, CAST6_BLOCK_SIZE, -1);
+ CBC_ENC_BLOCK(__cast6_encrypt);
+ CBC_WALK_END();
}
static int cbc_decrypt(struct skcipher_request *req)
{
- return glue_cbc_decrypt_req_128bit(&cast6_dec_cbc, req);
+ CBC_WALK_START(req, CAST6_BLOCK_SIZE, CAST6_PARALLEL_BLOCKS);
+ CBC_DEC_BLOCK(CAST6_PARALLEL_BLOCKS, cast6_cbc_dec_8way);
+ CBC_DEC_BLOCK(1, __cast6_decrypt);
+ CBC_WALK_END();
}
static struct skcipher_alg cast6_algs[] = {
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 29dce7efc443..25101558acb5 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1393,7 +1393,6 @@ config CRYPTO_CAST6_AVX_X86_64
select CRYPTO_SKCIPHER
select CRYPTO_CAST6
select CRYPTO_CAST_COMMON
- select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SIMD
imply CRYPTO_XTS
imply CRYPTO_CTR
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 19/21] crypto: x86/twofish - drop dependency on glue helper
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (17 preceding siblings ...)
2021-01-05 16:48 ` [PATCH v2 18/21] crypto: x86/cast6 " Ard Biesheuvel
@ 2021-01-05 16:48 ` Ard Biesheuvel
2021-01-05 16:48 ` [PATCH v2 20/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (2 subsequent siblings)
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:48 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
Replace the glue helper dependency with implementations of ECB and CBC
based on the new CPP macros, which avoid the need for indirect calls.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/twofish_avx_glue.c | 73 +++++-------------
arch/x86/crypto/twofish_glue_3way.c | 80 ++++++--------------
crypto/Kconfig | 2 -
3 files changed, 44 insertions(+), 111 deletions(-)
diff --git a/arch/x86/crypto/twofish_avx_glue.c b/arch/x86/crypto/twofish_avx_glue.c
index 13f810b61034..6ce198f808a5 100644
--- a/arch/x86/crypto/twofish_avx_glue.c
+++ b/arch/x86/crypto/twofish_avx_glue.c
@@ -15,9 +15,10 @@
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <crypto/twofish.h>
-#include <asm/crypto/glue_helper.h>
#include <asm/crypto/twofish.h>
+#include "ecb_cbc_helpers.h"
+
#define TWOFISH_PARALLEL_BLOCKS 8
/* 8-way parallel cipher functions */
@@ -37,72 +38,38 @@ static inline void twofish_enc_blk_3way(const void *ctx, u8 *dst, const u8 *src)
__twofish_enc_blk_3way(ctx, dst, src, false);
}
-static const struct common_glue_ctx twofish_enc = {
- .num_funcs = 3,
- .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = TWOFISH_PARALLEL_BLOCKS,
- .fn_u = { .ecb = twofish_ecb_enc_8way }
- }, {
- .num_blocks = 3,
- .fn_u = { .ecb = twofish_enc_blk_3way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = twofish_enc_blk }
- } }
-};
-
-static const struct common_glue_ctx twofish_dec = {
- .num_funcs = 3,
- .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = TWOFISH_PARALLEL_BLOCKS,
- .fn_u = { .ecb = twofish_ecb_dec_8way }
- }, {
- .num_blocks = 3,
- .fn_u = { .ecb = twofish_dec_blk_3way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = twofish_dec_blk }
- } }
-};
-
-static const struct common_glue_ctx twofish_dec_cbc = {
- .num_funcs = 3,
- .fpu_blocks_limit = TWOFISH_PARALLEL_BLOCKS,
-
- .funcs = { {
- .num_blocks = TWOFISH_PARALLEL_BLOCKS,
- .fn_u = { .cbc = twofish_cbc_dec_8way }
- }, {
- .num_blocks = 3,
- .fn_u = { .cbc = twofish_dec_blk_cbc_3way }
- }, {
- .num_blocks = 1,
- .fn_u = { .cbc = twofish_dec_blk }
- } }
-};
-
static int ecb_encrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&twofish_enc, req);
+ ECB_WALK_START(req, TF_BLOCK_SIZE, TWOFISH_PARALLEL_BLOCKS);
+ ECB_BLOCK(TWOFISH_PARALLEL_BLOCKS, twofish_ecb_enc_8way);
+ ECB_BLOCK(3, twofish_enc_blk_3way);
+ ECB_BLOCK(1, twofish_enc_blk);
+ ECB_WALK_END();
}
static int ecb_decrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&twofish_dec, req);
+ ECB_WALK_START(req, TF_BLOCK_SIZE, TWOFISH_PARALLEL_BLOCKS);
+ ECB_BLOCK(TWOFISH_PARALLEL_BLOCKS, twofish_ecb_dec_8way);
+ ECB_BLOCK(3, twofish_dec_blk_3way);
+ ECB_BLOCK(1, twofish_dec_blk);
+ ECB_WALK_END();
}
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(twofish_enc_blk, req);
+ CBC_WALK_START(req, TF_BLOCK_SIZE, -1);
+ CBC_ENC_BLOCK(twofish_enc_blk);
+ CBC_WALK_END();
}
static int cbc_decrypt(struct skcipher_request *req)
{
- return glue_cbc_decrypt_req_128bit(&twofish_dec_cbc, req);
+ CBC_WALK_START(req, TF_BLOCK_SIZE, TWOFISH_PARALLEL_BLOCKS);
+ CBC_DEC_BLOCK(TWOFISH_PARALLEL_BLOCKS, twofish_cbc_dec_8way);
+ CBC_DEC_BLOCK(3, twofish_dec_blk_cbc_3way);
+ CBC_DEC_BLOCK(1, twofish_dec_blk);
+ CBC_WALK_END();
}
static struct skcipher_alg twofish_algs[] = {
diff --git a/arch/x86/crypto/twofish_glue_3way.c b/arch/x86/crypto/twofish_glue_3way.c
index 88252370db0a..d1fdefa5195a 100644
--- a/arch/x86/crypto/twofish_glue_3way.c
+++ b/arch/x86/crypto/twofish_glue_3way.c
@@ -5,17 +5,16 @@
* Copyright (c) 2011 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
*/
-#include <asm/crypto/glue_helper.h>
#include <asm/crypto/twofish.h>
#include <crypto/algapi.h>
-#include <crypto/b128ops.h>
-#include <crypto/internal/skcipher.h>
#include <crypto/twofish.h>
#include <linux/crypto.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/types.h>
+#include "ecb_cbc_helpers.h"
+
EXPORT_SYMBOL_GPL(__twofish_enc_blk_3way);
EXPORT_SYMBOL_GPL(twofish_dec_blk_3way);
@@ -30,79 +29,48 @@ static inline void twofish_enc_blk_3way(const void *ctx, u8 *dst, const u8 *src)
__twofish_enc_blk_3way(ctx, dst, src, false);
}
-void twofish_dec_blk_cbc_3way(const void *ctx, u8 *d, const u8 *s)
+void twofish_dec_blk_cbc_3way(const void *ctx, u8 *dst, const u8 *src)
{
- u128 ivs[2];
- u128 *dst = (u128 *)d;
- const u128 *src = (const u128 *)s;
-
- ivs[0] = src[0];
- ivs[1] = src[1];
+ u8 buf[2][TF_BLOCK_SIZE];
+ const u8 *s = src;
- twofish_dec_blk_3way(ctx, (u8 *)dst, (u8 *)src);
+ if (dst == src)
+ s = memcpy(buf, src, sizeof(buf));
+ twofish_dec_blk_3way(ctx, dst, src);
+ crypto_xor(dst + TF_BLOCK_SIZE, s, sizeof(buf));
- u128_xor(&dst[1], &dst[1], &ivs[0]);
- u128_xor(&dst[2], &dst[2], &ivs[1]);
}
EXPORT_SYMBOL_GPL(twofish_dec_blk_cbc_3way);
-static const struct common_glue_ctx twofish_enc = {
- .num_funcs = 2,
- .fpu_blocks_limit = -1,
-
- .funcs = { {
- .num_blocks = 3,
- .fn_u = { .ecb = twofish_enc_blk_3way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = twofish_enc_blk }
- } }
-};
-
-static const struct common_glue_ctx twofish_dec = {
- .num_funcs = 2,
- .fpu_blocks_limit = -1,
-
- .funcs = { {
- .num_blocks = 3,
- .fn_u = { .ecb = twofish_dec_blk_3way }
- }, {
- .num_blocks = 1,
- .fn_u = { .ecb = twofish_dec_blk }
- } }
-};
-
-static const struct common_glue_ctx twofish_dec_cbc = {
- .num_funcs = 2,
- .fpu_blocks_limit = -1,
-
- .funcs = { {
- .num_blocks = 3,
- .fn_u = { .cbc = twofish_dec_blk_cbc_3way }
- }, {
- .num_blocks = 1,
- .fn_u = { .cbc = twofish_dec_blk }
- } }
-};
-
static int ecb_encrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&twofish_enc, req);
+ ECB_WALK_START(req, TF_BLOCK_SIZE, -1);
+ ECB_BLOCK(3, twofish_enc_blk_3way);
+ ECB_BLOCK(1, twofish_enc_blk);
+ ECB_WALK_END();
}
static int ecb_decrypt(struct skcipher_request *req)
{
- return glue_ecb_req_128bit(&twofish_dec, req);
+ ECB_WALK_START(req, TF_BLOCK_SIZE, -1);
+ ECB_BLOCK(3, twofish_dec_blk_3way);
+ ECB_BLOCK(1, twofish_dec_blk);
+ ECB_WALK_END();
}
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(twofish_enc_blk, req);
+ CBC_WALK_START(req, TF_BLOCK_SIZE, -1);
+ CBC_ENC_BLOCK(twofish_enc_blk);
+ CBC_WALK_END();
}
static int cbc_decrypt(struct skcipher_request *req)
{
- return glue_cbc_decrypt_req_128bit(&twofish_dec_cbc, req);
+ CBC_WALK_START(req, TF_BLOCK_SIZE, -1);
+ CBC_DEC_BLOCK(3, twofish_dec_blk_cbc_3way);
+ CBC_DEC_BLOCK(1, twofish_dec_blk);
+ CBC_WALK_END();
}
static struct skcipher_alg tf_skciphers[] = {
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 25101558acb5..b2182658c55e 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1711,7 +1711,6 @@ config CRYPTO_TWOFISH_X86_64_3WAY
select CRYPTO_SKCIPHER
select CRYPTO_TWOFISH_COMMON
select CRYPTO_TWOFISH_X86_64
- select CRYPTO_GLUE_HELPER_X86
help
Twofish cipher algorithm (x86_64, 3-way parallel).
@@ -1730,7 +1729,6 @@ config CRYPTO_TWOFISH_AVX_X86_64
tristate "Twofish cipher algorithm (x86_64/AVX)"
depends on X86 && 64BIT
select CRYPTO_SKCIPHER
- select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SIMD
select CRYPTO_TWOFISH_COMMON
select CRYPTO_TWOFISH_X86_64
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 20/21] crypto: x86 - remove glue helper module
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (18 preceding siblings ...)
2021-01-05 16:48 ` [PATCH v2 19/21] crypto: x86/twofish " Ard Biesheuvel
@ 2021-01-05 16:48 ` Ard Biesheuvel
2021-01-05 16:48 ` [PATCH v2 21/21] crypto: x86 - use local headers for x86 specific shared declarations Ard Biesheuvel
2021-01-14 6:47 ` [PATCH v2 00/21] crypto: x86 - remove glue helper module Herbert Xu
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:48 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
All dependencies on the x86 glue helper module have been replaced by
local instantiations of the new ECB/CBC preprocessor helper macros, so
the glue helper module can be retired.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/crypto/Makefile | 2 -
arch/x86/crypto/glue_helper.c | 155 --------------------
arch/x86/include/asm/crypto/glue_helper.h | 74 ----------
crypto/Kconfig | 5 -
crypto/skcipher.c | 6 -
include/crypto/internal/skcipher.h | 1 -
6 files changed, 243 deletions(-)
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
index a31de0c6ccde..b28e36b7c96b 100644
--- a/arch/x86/crypto/Makefile
+++ b/arch/x86/crypto/Makefile
@@ -4,8 +4,6 @@
OBJECT_FILES_NON_STANDARD := y
-obj-$(CONFIG_CRYPTO_GLUE_HELPER_X86) += glue_helper.o
-
obj-$(CONFIG_CRYPTO_TWOFISH_586) += twofish-i586.o
twofish-i586-y := twofish-i586-asm_32.o twofish_glue.o
obj-$(CONFIG_CRYPTO_TWOFISH_X86_64) += twofish-x86_64.o
diff --git a/arch/x86/crypto/glue_helper.c b/arch/x86/crypto/glue_helper.c
deleted file mode 100644
index 895d34150c3f..000000000000
--- a/arch/x86/crypto/glue_helper.c
+++ /dev/null
@@ -1,155 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Shared glue code for 128bit block ciphers
- *
- * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
- *
- * CBC & ECB parts based on code (crypto/cbc.c,ecb.c) by:
- * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
- */
-
-#include <linux/module.h>
-#include <crypto/b128ops.h>
-#include <crypto/internal/skcipher.h>
-#include <crypto/scatterwalk.h>
-#include <asm/crypto/glue_helper.h>
-
-int glue_ecb_req_128bit(const struct common_glue_ctx *gctx,
- struct skcipher_request *req)
-{
- void *ctx = crypto_skcipher_ctx(crypto_skcipher_reqtfm(req));
- const unsigned int bsize = 128 / 8;
- struct skcipher_walk walk;
- bool fpu_enabled = false;
- unsigned int nbytes;
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
-
- while ((nbytes = walk.nbytes)) {
- const u8 *src = walk.src.virt.addr;
- u8 *dst = walk.dst.virt.addr;
- unsigned int func_bytes;
- unsigned int i;
-
- fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
- &walk, fpu_enabled, nbytes);
- for (i = 0; i < gctx->num_funcs; i++) {
- func_bytes = bsize * gctx->funcs[i].num_blocks;
-
- if (nbytes < func_bytes)
- continue;
-
- /* Process multi-block batch */
- do {
- gctx->funcs[i].fn_u.ecb(ctx, dst, src);
- src += func_bytes;
- dst += func_bytes;
- nbytes -= func_bytes;
- } while (nbytes >= func_bytes);
-
- if (nbytes < bsize)
- break;
- }
- err = skcipher_walk_done(&walk, nbytes);
- }
-
- glue_fpu_end(fpu_enabled);
- return err;
-}
-EXPORT_SYMBOL_GPL(glue_ecb_req_128bit);
-
-int glue_cbc_encrypt_req_128bit(const common_glue_func_t fn,
- struct skcipher_request *req)
-{
- void *ctx = crypto_skcipher_ctx(crypto_skcipher_reqtfm(req));
- const unsigned int bsize = 128 / 8;
- struct skcipher_walk walk;
- unsigned int nbytes;
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
-
- while ((nbytes = walk.nbytes)) {
- const u128 *src = (u128 *)walk.src.virt.addr;
- u128 *dst = (u128 *)walk.dst.virt.addr;
- u128 *iv = (u128 *)walk.iv;
-
- do {
- u128_xor(dst, src, iv);
- fn(ctx, (u8 *)dst, (u8 *)dst);
- iv = dst;
- src++;
- dst++;
- nbytes -= bsize;
- } while (nbytes >= bsize);
-
- *(u128 *)walk.iv = *iv;
- err = skcipher_walk_done(&walk, nbytes);
- }
- return err;
-}
-EXPORT_SYMBOL_GPL(glue_cbc_encrypt_req_128bit);
-
-int glue_cbc_decrypt_req_128bit(const struct common_glue_ctx *gctx,
- struct skcipher_request *req)
-{
- void *ctx = crypto_skcipher_ctx(crypto_skcipher_reqtfm(req));
- const unsigned int bsize = 128 / 8;
- struct skcipher_walk walk;
- bool fpu_enabled = false;
- unsigned int nbytes;
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
-
- while ((nbytes = walk.nbytes)) {
- const u128 *src = walk.src.virt.addr;
- u128 *dst = walk.dst.virt.addr;
- unsigned int func_bytes, num_blocks;
- unsigned int i;
- u128 last_iv;
-
- fpu_enabled = glue_fpu_begin(bsize, gctx->fpu_blocks_limit,
- &walk, fpu_enabled, nbytes);
- /* Start of the last block. */
- src += nbytes / bsize - 1;
- dst += nbytes / bsize - 1;
-
- last_iv = *src;
-
- for (i = 0; i < gctx->num_funcs; i++) {
- num_blocks = gctx->funcs[i].num_blocks;
- func_bytes = bsize * num_blocks;
-
- if (nbytes < func_bytes)
- continue;
-
- /* Process multi-block batch */
- do {
- src -= num_blocks - 1;
- dst -= num_blocks - 1;
-
- gctx->funcs[i].fn_u.cbc(ctx, (u8 *)dst,
- (const u8 *)src);
-
- nbytes -= func_bytes;
- if (nbytes < bsize)
- goto done;
-
- u128_xor(dst, dst, --src);
- dst--;
- } while (nbytes >= func_bytes);
- }
-done:
- u128_xor(dst, dst, (u128 *)walk.iv);
- *(u128 *)walk.iv = last_iv;
- err = skcipher_walk_done(&walk, nbytes);
- }
-
- glue_fpu_end(fpu_enabled);
- return err;
-}
-EXPORT_SYMBOL_GPL(glue_cbc_decrypt_req_128bit);
-
-MODULE_LICENSE("GPL");
diff --git a/arch/x86/include/asm/crypto/glue_helper.h b/arch/x86/include/asm/crypto/glue_helper.h
deleted file mode 100644
index 23e09efd2aa6..000000000000
--- a/arch/x86/include/asm/crypto/glue_helper.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Shared glue code for 128bit block ciphers
- */
-
-#ifndef _CRYPTO_GLUE_HELPER_H
-#define _CRYPTO_GLUE_HELPER_H
-
-#include <crypto/internal/skcipher.h>
-#include <linux/kernel.h>
-#include <asm/fpu/api.h>
-
-typedef void (*common_glue_func_t)(const void *ctx, u8 *dst, const u8 *src);
-typedef void (*common_glue_cbc_func_t)(const void *ctx, u8 *dst, const u8 *src);
-
-struct common_glue_func_entry {
- unsigned int num_blocks; /* number of blocks that @fn will process */
- union {
- common_glue_func_t ecb;
- common_glue_cbc_func_t cbc;
- } fn_u;
-};
-
-struct common_glue_ctx {
- unsigned int num_funcs;
- int fpu_blocks_limit; /* -1 means fpu not needed at all */
-
- /*
- * First funcs entry must have largest num_blocks and last funcs entry
- * must have num_blocks == 1!
- */
- struct common_glue_func_entry funcs[];
-};
-
-static inline bool glue_fpu_begin(unsigned int bsize, int fpu_blocks_limit,
- struct skcipher_walk *walk,
- bool fpu_enabled, unsigned int nbytes)
-{
- if (likely(fpu_blocks_limit < 0))
- return false;
-
- if (fpu_enabled)
- return true;
-
- /*
- * Vector-registers are only used when chunk to be processed is large
- * enough, so do not enable FPU until it is necessary.
- */
- if (nbytes < bsize * (unsigned int)fpu_blocks_limit)
- return false;
-
- /* prevent sleeping if FPU is in use */
- skcipher_walk_atomise(walk);
-
- kernel_fpu_begin();
- return true;
-}
-
-static inline void glue_fpu_end(bool fpu_enabled)
-{
- if (fpu_enabled)
- kernel_fpu_end();
-}
-
-extern int glue_ecb_req_128bit(const struct common_glue_ctx *gctx,
- struct skcipher_request *req);
-
-extern int glue_cbc_encrypt_req_128bit(const common_glue_func_t fn,
- struct skcipher_request *req);
-
-extern int glue_cbc_decrypt_req_128bit(const struct common_glue_ctx *gctx,
- struct skcipher_request *req);
-
-#endif /* _CRYPTO_GLUE_HELPER_H */
diff --git a/crypto/Kconfig b/crypto/Kconfig
index b2182658c55e..94f0fde06b94 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -210,11 +210,6 @@ config CRYPTO_SIMD
tristate
select CRYPTO_CRYPTD
-config CRYPTO_GLUE_HELPER_X86
- tristate
- depends on X86
- select CRYPTO_SKCIPHER
-
config CRYPTO_ENGINE
tristate
diff --git a/crypto/skcipher.c b/crypto/skcipher.c
index ff16d05644c7..a15376245416 100644
--- a/crypto/skcipher.c
+++ b/crypto/skcipher.c
@@ -491,12 +491,6 @@ int skcipher_walk_virt(struct skcipher_walk *walk,
}
EXPORT_SYMBOL_GPL(skcipher_walk_virt);
-void skcipher_walk_atomise(struct skcipher_walk *walk)
-{
- walk->flags &= ~SKCIPHER_WALK_SLEEP;
-}
-EXPORT_SYMBOL_GPL(skcipher_walk_atomise);
-
int skcipher_walk_async(struct skcipher_walk *walk,
struct skcipher_request *req)
{
diff --git a/include/crypto/internal/skcipher.h b/include/crypto/internal/skcipher.h
index 9dd6c0c17eb8..a2339f80a615 100644
--- a/include/crypto/internal/skcipher.h
+++ b/include/crypto/internal/skcipher.h
@@ -133,7 +133,6 @@ int skcipher_walk_done(struct skcipher_walk *walk, int err);
int skcipher_walk_virt(struct skcipher_walk *walk,
struct skcipher_request *req,
bool atomic);
-void skcipher_walk_atomise(struct skcipher_walk *walk);
int skcipher_walk_async(struct skcipher_walk *walk,
struct skcipher_request *req);
int skcipher_walk_aead_encrypt(struct skcipher_walk *walk,
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* [PATCH v2 21/21] crypto: x86 - use local headers for x86 specific shared declarations
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (19 preceding siblings ...)
2021-01-05 16:48 ` [PATCH v2 20/21] crypto: x86 - remove glue helper module Ard Biesheuvel
@ 2021-01-05 16:48 ` Ard Biesheuvel
2021-01-14 6:47 ` [PATCH v2 00/21] crypto: x86 - remove glue helper module Herbert Xu
21 siblings, 0 replies; 23+ messages in thread
From: Ard Biesheuvel @ 2021-01-05 16:48 UTC (permalink / raw)
To: linux-crypto
Cc: Ard Biesheuvel, Megha Dey, Eric Biggers, Herbert Xu, Milan Broz,
Mike Snitzer
The Camellia, Serpent and Twofish related header files only contain
declarations that are shared between different implementations of the
respective algorithms residing under arch/x86/crypto, and none of their
contents should be used elsewhere. So move the header files into the
same location, and use local #includes instead.
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/x86/{include/asm => }/crypto/camellia.h | 0
arch/x86/crypto/camellia_aesni_avx2_glue.c | 2 +-
arch/x86/crypto/camellia_aesni_avx_glue.c | 2 +-
arch/x86/crypto/camellia_glue.c | 2 +-
arch/x86/{include/asm => }/crypto/serpent-avx.h | 0
arch/x86/{include/asm => }/crypto/serpent-sse2.h | 0
arch/x86/crypto/serpent_avx2_glue.c | 2 +-
arch/x86/crypto/serpent_avx_glue.c | 2 +-
arch/x86/crypto/serpent_sse2_glue.c | 2 +-
arch/x86/{include/asm => }/crypto/twofish.h | 0
arch/x86/crypto/twofish_avx_glue.c | 2 +-
arch/x86/crypto/twofish_glue_3way.c | 2 +-
12 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/arch/x86/include/asm/crypto/camellia.h b/arch/x86/crypto/camellia.h
similarity index 100%
rename from arch/x86/include/asm/crypto/camellia.h
rename to arch/x86/crypto/camellia.h
diff --git a/arch/x86/crypto/camellia_aesni_avx2_glue.c b/arch/x86/crypto/camellia_aesni_avx2_glue.c
index ef5c0f094584..e7e4d64e9577 100644
--- a/arch/x86/crypto/camellia_aesni_avx2_glue.c
+++ b/arch/x86/crypto/camellia_aesni_avx2_glue.c
@@ -5,7 +5,6 @@
* Copyright © 2013 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
*/
-#include <asm/crypto/camellia.h>
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <linux/crypto.h>
@@ -13,6 +12,7 @@
#include <linux/module.h>
#include <linux/types.h>
+#include "camellia.h"
#include "ecb_cbc_helpers.h"
#define CAMELLIA_AESNI_PARALLEL_BLOCKS 16
diff --git a/arch/x86/crypto/camellia_aesni_avx_glue.c b/arch/x86/crypto/camellia_aesni_avx_glue.c
index 68fed0a79889..c7ccf63e741e 100644
--- a/arch/x86/crypto/camellia_aesni_avx_glue.c
+++ b/arch/x86/crypto/camellia_aesni_avx_glue.c
@@ -5,7 +5,6 @@
* Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
*/
-#include <asm/crypto/camellia.h>
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <linux/crypto.h>
@@ -13,6 +12,7 @@
#include <linux/module.h>
#include <linux/types.h>
+#include "camellia.h"
#include "ecb_cbc_helpers.h"
#define CAMELLIA_AESNI_PARALLEL_BLOCKS 16
diff --git a/arch/x86/crypto/camellia_glue.c b/arch/x86/crypto/camellia_glue.c
index 0bc00ce68484..66c435ba9d3d 100644
--- a/arch/x86/crypto/camellia_glue.c
+++ b/arch/x86/crypto/camellia_glue.c
@@ -14,8 +14,8 @@
#include <linux/module.h>
#include <linux/types.h>
#include <crypto/algapi.h>
-#include <asm/crypto/camellia.h>
+#include "camellia.h"
#include "ecb_cbc_helpers.h"
/* regular block cipher functions */
diff --git a/arch/x86/include/asm/crypto/serpent-avx.h b/arch/x86/crypto/serpent-avx.h
similarity index 100%
rename from arch/x86/include/asm/crypto/serpent-avx.h
rename to arch/x86/crypto/serpent-avx.h
diff --git a/arch/x86/include/asm/crypto/serpent-sse2.h b/arch/x86/crypto/serpent-sse2.h
similarity index 100%
rename from arch/x86/include/asm/crypto/serpent-sse2.h
rename to arch/x86/crypto/serpent-sse2.h
diff --git a/arch/x86/crypto/serpent_avx2_glue.c b/arch/x86/crypto/serpent_avx2_glue.c
index 261c9ac2d762..ccf0b5fa4933 100644
--- a/arch/x86/crypto/serpent_avx2_glue.c
+++ b/arch/x86/crypto/serpent_avx2_glue.c
@@ -12,8 +12,8 @@
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <crypto/serpent.h>
-#include <asm/crypto/serpent-avx.h>
+#include "serpent-avx.h"
#include "ecb_cbc_helpers.h"
#define SERPENT_AVX2_PARALLEL_BLOCKS 16
diff --git a/arch/x86/crypto/serpent_avx_glue.c b/arch/x86/crypto/serpent_avx_glue.c
index 5fe01d2a5b1d..6c248e1ea4ef 100644
--- a/arch/x86/crypto/serpent_avx_glue.c
+++ b/arch/x86/crypto/serpent_avx_glue.c
@@ -15,8 +15,8 @@
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <crypto/serpent.h>
-#include <asm/crypto/serpent-avx.h>
+#include "serpent-avx.h"
#include "ecb_cbc_helpers.h"
/* 8-way parallel cipher functions */
diff --git a/arch/x86/crypto/serpent_sse2_glue.c b/arch/x86/crypto/serpent_sse2_glue.c
index e28d60949c16..d78f37e9b2cf 100644
--- a/arch/x86/crypto/serpent_sse2_glue.c
+++ b/arch/x86/crypto/serpent_sse2_glue.c
@@ -20,8 +20,8 @@
#include <crypto/b128ops.h>
#include <crypto/internal/simd.h>
#include <crypto/serpent.h>
-#include <asm/crypto/serpent-sse2.h>
+#include "serpent-sse2.h"
#include "ecb_cbc_helpers.h"
static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
diff --git a/arch/x86/include/asm/crypto/twofish.h b/arch/x86/crypto/twofish.h
similarity index 100%
rename from arch/x86/include/asm/crypto/twofish.h
rename to arch/x86/crypto/twofish.h
diff --git a/arch/x86/crypto/twofish_avx_glue.c b/arch/x86/crypto/twofish_avx_glue.c
index 6ce198f808a5..3eb3440b477a 100644
--- a/arch/x86/crypto/twofish_avx_glue.c
+++ b/arch/x86/crypto/twofish_avx_glue.c
@@ -15,8 +15,8 @@
#include <crypto/algapi.h>
#include <crypto/internal/simd.h>
#include <crypto/twofish.h>
-#include <asm/crypto/twofish.h>
+#include "twofish.h"
#include "ecb_cbc_helpers.h"
#define TWOFISH_PARALLEL_BLOCKS 8
diff --git a/arch/x86/crypto/twofish_glue_3way.c b/arch/x86/crypto/twofish_glue_3way.c
index d1fdefa5195a..03725696397c 100644
--- a/arch/x86/crypto/twofish_glue_3way.c
+++ b/arch/x86/crypto/twofish_glue_3way.c
@@ -5,7 +5,6 @@
* Copyright (c) 2011 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
*/
-#include <asm/crypto/twofish.h>
#include <crypto/algapi.h>
#include <crypto/twofish.h>
#include <linux/crypto.h>
@@ -13,6 +12,7 @@
#include <linux/module.h>
#include <linux/types.h>
+#include "twofish.h"
#include "ecb_cbc_helpers.h"
EXPORT_SYMBOL_GPL(__twofish_enc_blk_3way);
--
2.17.1
^ permalink raw reply related [flat|nested] 23+ messages in thread* Re: [PATCH v2 00/21] crypto: x86 - remove glue helper module
2021-01-05 16:47 [PATCH v2 00/21] crypto: x86 - remove glue helper module Ard Biesheuvel
` (20 preceding siblings ...)
2021-01-05 16:48 ` [PATCH v2 21/21] crypto: x86 - use local headers for x86 specific shared declarations Ard Biesheuvel
@ 2021-01-14 6:47 ` Herbert Xu
21 siblings, 0 replies; 23+ messages in thread
From: Herbert Xu @ 2021-01-14 6:47 UTC (permalink / raw)
To: Ard Biesheuvel
Cc: linux-crypto, Megha Dey, Eric Biggers, Milan Broz, Mike Snitzer
On Tue, Jan 05, 2021 at 05:47:48PM +0100, Ard Biesheuvel wrote:
> NOTE: this is a follow-up to '[RFC PATCH 00/10] crypto: x86 - remove XTS and
> CTR glue helper code' [0].
>
> After applying my performance fixes for AES-NI in XTS mode, the only
> remaining users of the x86 glue helper module are the niche algorithms
> camellia, cast5/6, serpent and twofish.
>
> It is not clear from the history why all these different versions of these
> algorithms in XTS and CTR modes were added in the first place: the only
> in-kernel references that seem to exist are to cbc(serpent), cbc(camellia)
> and cbc(twofish) in the IPsec stack. The XTS spec only mentions AES, and
> CTR modes don't seem to be widely used either.
>
> Since the glue helper code relies heavily on indirect calls for small chunks
> of in/output, it needs some work to recover from the performance hit caused
> by the retpoline changes. However, it makes sense to only expend the effort
> for algorithms that are being used in the first place, and this does not
> seem to be the case for XTS and CTR.
>
> CTR mode can simply be removed: it is not used in the kernel, and it is
> highly unlikely that it is being relied upon via algif_skcipher. And even
> if it was, the generic CTR mode driver can still provide the CTR transforms
> if necessary. While at it, accelerated implementations of DES and Blowfish
> in CTR mode are removed as well, for the same reasons.
>
> XTS mode may actually be in use by dm-crypt users *, so we cannot simply drop
> this code entirely. However, as it turns out, the XTS template wrapped
> around the ECB mode skciphers perform roughly on par, and so there is no
> need to retain all the complicated XTS helper logic. Users of dm-crypt that
> are relying on xts(camellia) or xts(serpent) in the field should not be
> impacted by these changes at all.
>
> ECB and CBC are retained, but the glue helper indirection is replaced with
> a set of preprocessor macros which can be used to instantiate the same logic
> flow, but without relying on indirect calls into the glue helper module.
> Please refer to patch #14 for more background.
>
> * Milan points out that Serpent, Camellia and Twofish in XTS mode are used
> by TrueCrypt/Veracrypt, which means that dm-crypt should retain support
> for these algorithms as well.
>
> [0] https://lore.kernel.org/linux-crypto/20201223223841.11311-1-ardb@kernel.org/
>
> Changes since v1:
> - avoid unnecessary memcpy()s in the new CBC decryption helper macro
> - avoid unnecessary memcpy() in camellia_decrypt_cbc_2way()
> - add Eric's ack
>
> Changes since RFC:
> - add Eric's ack to the initial XTS and CTR patches
> - add patches to convert ECB and CBC modes
> - add patches to remove DES and Blowfish in CTR mode
>
> Cc: Megha Dey <megha.dey@intel.com>
> Cc: Eric Biggers <ebiggers@kernel.org>
> Cc: Herbert Xu <herbert@gondor.apana.org.au>
> Cc: Milan Broz <gmazyland@gmail.com>
> Cc: Mike Snitzer <snitzer@redhat.com>
>
> Ard Biesheuvel (21):
> crypto: x86/camellia - switch to XTS template
> crypto: x86/cast6 - switch to XTS template
> crypto: x86/serpent- switch to XTS template
> crypto: x86/twofish - switch to XTS template
> crypto: x86/glue-helper - drop XTS helper routines
> crypto: x86/camellia - drop CTR mode implementation
> crypto: x86/serpent - drop CTR mode implementation
> crypto: x86/cast5 - drop CTR mode implementation
> crypto: x86/cast6 - drop CTR mode implementation
> crypto: x86/twofish - drop CTR mode implementation
> crypto: x86/glue-helper - drop CTR helper routines
> crypto: x86/des - drop CTR mode implementation
> crypto: x86/blowfish - drop CTR mode implementation
> crypto: x86 - add some helper macros for ECB and CBC modes
> crypto: x86/camellia - drop dependency on glue helper
> crypto: x86/serpent - drop dependency on glue helper
> crypto: x86/cast5 - drop dependency on glue helper
> crypto: x86/cast6 - drop dependency on glue helper
> crypto: x86/twofish - drop dependency on glue helper
> crypto: x86 - remove glue helper module
> crypto: x86 - use local headers for x86 specific shared declarations
>
> arch/x86/crypto/Makefile | 2 -
> arch/x86/crypto/blowfish_glue.c | 107 -----
> arch/x86/crypto/camellia-aesni-avx-asm_64.S | 298 --------------
> arch/x86/crypto/camellia-aesni-avx2-asm_64.S | 351 ----------------
> arch/x86/{include/asm => }/crypto/camellia.h | 24 --
> arch/x86/crypto/camellia_aesni_avx2_glue.c | 198 ++-------
> arch/x86/crypto/camellia_aesni_avx_glue.c | 216 +---------
> arch/x86/crypto/camellia_glue.c | 145 ++-----
> arch/x86/crypto/cast5_avx_glue.c | 287 +------------
> arch/x86/crypto/cast6-avx-x86_64-asm_64.S | 84 ----
> arch/x86/crypto/cast6_avx_glue.c | 207 +---------
> arch/x86/crypto/des3_ede_glue.c | 104 -----
> arch/x86/crypto/ecb_cbc_helpers.h | 76 ++++
> arch/x86/crypto/glue_helper-asm-avx.S | 104 -----
> arch/x86/crypto/glue_helper-asm-avx2.S | 136 -------
> arch/x86/crypto/glue_helper.c | 381 ------------------
> arch/x86/crypto/serpent-avx-x86_64-asm_64.S | 68 ----
> arch/x86/crypto/serpent-avx.h | 21 +
> arch/x86/crypto/serpent-avx2-asm_64.S | 87 ----
> .../{include/asm => }/crypto/serpent-sse2.h | 0
> arch/x86/crypto/serpent_avx2_glue.c | 185 +--------
> arch/x86/crypto/serpent_avx_glue.c | 215 +---------
> arch/x86/crypto/serpent_sse2_glue.c | 150 ++-----
> arch/x86/crypto/twofish-avx-x86_64-asm_64.S | 80 ----
> arch/x86/{include/asm => }/crypto/twofish.h | 4 -
> arch/x86/crypto/twofish_avx_glue.c | 211 +---------
> arch/x86/crypto/twofish_glue_3way.c | 160 ++------
> arch/x86/include/asm/crypto/glue_helper.h | 118 ------
> arch/x86/include/asm/crypto/serpent-avx.h | 42 --
> crypto/Kconfig | 30 +-
> crypto/skcipher.c | 6 -
> include/crypto/internal/skcipher.h | 1 -
> 32 files changed, 326 insertions(+), 3772 deletions(-)
> rename arch/x86/{include/asm => }/crypto/camellia.h (69%)
> create mode 100644 arch/x86/crypto/ecb_cbc_helpers.h
> delete mode 100644 arch/x86/crypto/glue_helper.c
> create mode 100644 arch/x86/crypto/serpent-avx.h
> rename arch/x86/{include/asm => }/crypto/serpent-sse2.h (100%)
> rename arch/x86/{include/asm => }/crypto/twofish.h (80%)
> delete mode 100644 arch/x86/include/asm/crypto/glue_helper.h
> delete mode 100644 arch/x86/include/asm/crypto/serpent-avx.h
All applied. Thanks.
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply [flat|nested] 23+ messages in thread