[PATCH 2/5] FCrypt encryption module

[David Howells <dhowells@redhat.com>]

Add a crypto module to provide FCrypt encryption as used by RxRPC.

Signed-Off-By: David Howells <dhowells@redhat.com>
---

 crypto/Kconfig  |    7 +
 crypto/Makefile |    1 
 crypto/fcrypt.c |  423 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 crypto/tcrypt.c |   16 ++
 crypto/tcrypt.h |  128 +++++++++++++++++
 5 files changed, 574 insertions(+), 1 deletions(-)

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 48996b7..6d0d682 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -177,6 +177,13 @@ config CRYPTO_DES
 	help
 	  DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
 
+config CRYPTO_FCRYPT
+	tristate "FCrypt cipher algorithm"
+	select CRYPTO_ALGAPI
+	select CRYPTO_BLKCIPHER
+	help
+	  FCrypt algorithm used by RxRPC.
+
 config CRYPTO_BLOWFISH
 	tristate "Blowfish cipher algorithm"
 	select CRYPTO_ALGAPI
diff --git a/crypto/Makefile b/crypto/Makefile
index 9ef048d..a3e1915 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_CRYPTO_CBC) += cbc.o
 obj-$(CONFIG_CRYPTO_PCBC) += pcbc.o
 obj-$(CONFIG_CRYPTO_LRW) += lrw.o
 obj-$(CONFIG_CRYPTO_DES) += des.o
+obj-$(CONFIG_CRYPTO_FCRYPT) += fcrypt.o
 obj-$(CONFIG_CRYPTO_BLOWFISH) += blowfish.o
 obj-$(CONFIG_CRYPTO_TWOFISH) += twofish.o
 obj-$(CONFIG_CRYPTO_TWOFISH_COMMON) += twofish_common.o
diff --git a/crypto/fcrypt.c b/crypto/fcrypt.c
new file mode 100644
index 0000000..9c2bb53
--- /dev/null
+++ b/crypto/fcrypt.c
@@ -0,0 +1,423 @@
+/* FCrypt encryption algorithm
+ *
+ * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Based on code:
+ *
+ * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <asm/byteorder.h>
+#include <linux/bitops.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/crypto.h>
+
+#define ROUNDS 16
+
+struct fcrypt_ctx {
+	u32 sched[ROUNDS];
+};
+
+/* Rotate right two 32 bit numbers as a 56 bit number */
+#define ror56(hi, lo, n)					\
+do {								\
+	u32 t = lo & ((1 << n) - 1);				\
+	lo = (lo >> n) | ((hi & ((1 << n) - 1)) << (32 - n));	\
+	hi = (hi >> n) | (t << (24-n));				\
+} while(0)
+
+/* Rotate right one 64 bit number as a 56 bit number */
+#define ror56_64(k, n)						\
+do {								\
+	k = (k >> n) | ((k & ((1 << n) - 1)) << (56 - n));	\
+} while(0)
+
+/*
+ * Sboxes for Feistel network derived from
+ * /afs/transarc.com/public/afsps/afs.rel31b.export-src/rxkad/sboxes.h
+ */
+#undef Z
+#define Z(x) __constant_be32_to_cpu(x << 3)
+static const u32 sbox0[256] = {
+	Z(0xea), Z(0x7f), Z(0xb2), Z(0x64), Z(0x9d), Z(0xb0), Z(0xd9), Z(0x11),
+	Z(0xcd), Z(0x86), Z(0x86), Z(0x91), Z(0x0a), Z(0xb2), Z(0x93), Z(0x06),
+	Z(0x0e), Z(0x06), Z(0xd2), Z(0x65), Z(0x73), Z(0xc5), Z(0x28), Z(0x60),
+	Z(0xf2), Z(0x20), Z(0xb5), Z(0x38), Z(0x7e), Z(0xda), Z(0x9f), Z(0xe3),
+	Z(0xd2), Z(0xcf), Z(0xc4), Z(0x3c), Z(0x61), Z(0xff), Z(0x4a), Z(0x4a),
+	Z(0x35), Z(0xac), Z(0xaa), Z(0x5f), Z(0x2b), Z(0xbb), Z(0xbc), Z(0x53),
+	Z(0x4e), Z(0x9d), Z(0x78), Z(0xa3), Z(0xdc), Z(0x09), Z(0x32), Z(0x10),
+	Z(0xc6), Z(0x6f), Z(0x66), Z(0xd6), Z(0xab), Z(0xa9), Z(0xaf), Z(0xfd),
+	Z(0x3b), Z(0x95), Z(0xe8), Z(0x34), Z(0x9a), Z(0x81), Z(0x72), Z(0x80),
+	Z(0x9c), Z(0xf3), Z(0xec), Z(0xda), Z(0x9f), Z(0x26), Z(0x76), Z(0x15),
+	Z(0x3e), Z(0x55), Z(0x4d), Z(0xde), Z(0x84), Z(0xee), Z(0xad), Z(0xc7),
+	Z(0xf1), Z(0x6b), Z(0x3d), Z(0xd3), Z(0x04), Z(0x49), Z(0xaa), Z(0x24),
+	Z(0x0b), Z(0x8a), Z(0x83), Z(0xba), Z(0xfa), Z(0x85), Z(0xa0), Z(0xa8),
+	Z(0xb1), Z(0xd4), Z(0x01), Z(0xd8), Z(0x70), Z(0x64), Z(0xf0), Z(0x51),
+	Z(0xd2), Z(0xc3), Z(0xa7), Z(0x75), Z(0x8c), Z(0xa5), Z(0x64), Z(0xef),
+	Z(0x10), Z(0x4e), Z(0xb7), Z(0xc6), Z(0x61), Z(0x03), Z(0xeb), Z(0x44),
+	Z(0x3d), Z(0xe5), Z(0xb3), Z(0x5b), Z(0xae), Z(0xd5), Z(0xad), Z(0x1d),
+	Z(0xfa), Z(0x5a), Z(0x1e), Z(0x33), Z(0xab), Z(0x93), Z(0xa2), Z(0xb7),
+	Z(0xe7), Z(0xa8), Z(0x45), Z(0xa4), Z(0xcd), Z(0x29), Z(0x63), Z(0x44),
+	Z(0xb6), Z(0x69), Z(0x7e), Z(0x2e), Z(0x62), Z(0x03), Z(0xc8), Z(0xe0),
+	Z(0x17), Z(0xbb), Z(0xc7), Z(0xf3), Z(0x3f), Z(0x36), Z(0xba), Z(0x71),
+	Z(0x8e), Z(0x97), Z(0x65), Z(0x60), Z(0x69), Z(0xb6), Z(0xf6), Z(0xe6),
+	Z(0x6e), Z(0xe0), Z(0x81), Z(0x59), Z(0xe8), Z(0xaf), Z(0xdd), Z(0x95),
+	Z(0x22), Z(0x99), Z(0xfd), Z(0x63), Z(0x19), Z(0x74), Z(0x61), Z(0xb1),
+	Z(0xb6), Z(0x5b), Z(0xae), Z(0x54), Z(0xb3), Z(0x70), Z(0xff), Z(0xc6),
+	Z(0x3b), Z(0x3e), Z(0xc1), Z(0xd7), Z(0xe1), Z(0x0e), Z(0x76), Z(0xe5),
+	Z(0x36), Z(0x4f), Z(0x59), Z(0xc7), Z(0x08), Z(0x6e), Z(0x82), Z(0xa6),
+	Z(0x93), Z(0xc4), Z(0xaa), Z(0x26), Z(0x49), Z(0xe0), Z(0x21), Z(0x64),
+	Z(0x07), Z(0x9f), Z(0x64), Z(0x81), Z(0x9c), Z(0xbf), Z(0xf9), Z(0xd1),
+	Z(0x43), Z(0xf8), Z(0xb6), Z(0xb9), Z(0xf1), Z(0x24), Z(0x75), Z(0x03),
+	Z(0xe4), Z(0xb0), Z(0x99), Z(0x46), Z(0x3d), Z(0xf5), Z(0xd1), Z(0x39),
+	Z(0x72), Z(0x12), Z(0xf6), Z(0xba), Z(0x0c), Z(0x0d), Z(0x42), Z(0x2e)
+};
+
+#undef Z
+#define Z(x) __constant_be32_to_cpu((x << 27) | (x >> 5))
+static const u32 sbox1[256] = {
+	Z(0x77), Z(0x14), Z(0xa6), Z(0xfe), Z(0xb2), Z(0x5e), Z(0x8c), Z(0x3e),
+	Z(0x67), Z(0x6c), Z(0xa1), Z(0x0d), Z(0xc2), Z(0xa2), Z(0xc1), Z(0x85),
+	Z(0x6c), Z(0x7b), Z(0x67), Z(0xc6), Z(0x23), Z(0xe3), Z(0xf2), Z(0x89),
+	Z(0x50), Z(0x9c), Z(0x03), Z(0xb7), Z(0x73), Z(0xe6), Z(0xe1), Z(0x39),
+	Z(0x31), Z(0x2c), Z(0x27), Z(0x9f), Z(0xa5), Z(0x69), Z(0x44), Z(0xd6),
+	Z(0x23), Z(0x83), Z(0x98), Z(0x7d), Z(0x3c), Z(0xb4), Z(0x2d), Z(0x99),
+	Z(0x1c), Z(0x1f), Z(0x8c), Z(0x20), Z(0x03), Z(0x7c), Z(0x5f), Z(0xad),
+	Z(0xf4), Z(0xfa), Z(0x95), Z(0xca), Z(0x76), Z(0x44), Z(0xcd), Z(0xb6),
+	Z(0xb8), Z(0xa1), Z(0xa1), Z(0xbe), Z(0x9e), Z(0x54), Z(0x8f), Z(0x0b),
+	Z(0x16), Z(0x74), Z(0x31), Z(0x8a), Z(0x23), Z(0x17), Z(0x04), Z(0xfa),
+	Z(0x79), Z(0x84), Z(0xb1), Z(0xf5), Z(0x13), Z(0xab), Z(0xb5), Z(0x2e),
+	Z(0xaa), Z(0x0c), Z(0x60), Z(0x6b), Z(0x5b), Z(0xc4), Z(0x4b), Z(0xbc),
+	Z(0xe2), Z(0xaf), Z(0x45), Z(0x73), Z(0xfa), Z(0xc9), Z(0x49), Z(0xcd),
+	Z(0x00), Z(0x92), Z(0x7d), Z(0x97), Z(0x7a), Z(0x18), Z(0x60), Z(0x3d),
+	Z(0xcf), Z(0x5b), Z(0xde), Z(0xc6), Z(0xe2), Z(0xe6), Z(0xbb), Z(0x8b),
+	Z(0x06), Z(0xda), Z(0x08), Z(0x15), Z(0x1b), Z(0x88), Z(0x6a), Z(0x17),
+	Z(0x89), Z(0xd0), Z(0xa9), Z(0xc1), Z(0xc9), Z(0x70), Z(0x6b), Z(0xe5),
+	Z(0x43), Z(0xf4), Z(0x68), Z(0xc8), Z(0xd3), Z(0x84), Z(0x28), Z(0x0a),
+	Z(0x52), Z(0x66), Z(0xa3), Z(0xca), Z(0xf2), Z(0xe3), Z(0x7f), Z(0x7a),
+	Z(0x31), Z(0xf7), Z(0x88), Z(0x94), Z(0x5e), Z(0x9c), Z(0x63), Z(0xd5),
+	Z(0x24), Z(0x66), Z(0xfc), Z(0xb3), Z(0x57), Z(0x25), Z(0xbe), Z(0x89),
+	Z(0x44), Z(0xc4), Z(0xe0), Z(0x8f), Z(0x23), Z(0x3c), Z(0x12), Z(0x52),
+	Z(0xf5), Z(0x1e), Z(0xf4), Z(0xcb), Z(0x18), Z(0x33), Z(0x1f), Z(0xf8),
+	Z(0x69), Z(0x10), Z(0x9d), Z(0xd3), Z(0xf7), Z(0x28), Z(0xf8), Z(0x30),
+	Z(0x05), Z(0x5e), Z(0x32), Z(0xc0), Z(0xd5), Z(0x19), Z(0xbd), Z(0x45),
+	Z(0x8b), Z(0x5b), Z(0xfd), Z(0xbc), Z(0xe2), Z(0x5c), Z(0xa9), Z(0x96),
+	Z(0xef), Z(0x70), Z(0xcf), Z(0xc2), Z(0x2a), Z(0xb3), Z(0x61), Z(0xad),
+	Z(0x80), Z(0x48), Z(0x81), Z(0xb7), Z(0x1d), Z(0x43), Z(0xd9), Z(0xd7),
+	Z(0x45), Z(0xf0), Z(0xd8), Z(0x8a), Z(0x59), Z(0x7c), Z(0x57), Z(0xc1),
+	Z(0x79), Z(0xc7), Z(0x34), Z(0xd6), Z(0x43), Z(0xdf), Z(0xe4), Z(0x78),
+	Z(0x16), Z(0x06), Z(0xda), Z(0x92), Z(0x76), Z(0x51), Z(0xe1), Z(0xd4),
+	Z(0x70), Z(0x03), Z(0xe0), Z(0x2f), Z(0x96), Z(0x91), Z(0x82), Z(0x80)
+};
+
+#undef Z
+#define Z(x) __constant_be32_to_cpu(x << 11)
+static const u32 sbox2[256] = {
+	Z(0xf0), Z(0x37), Z(0x24), Z(0x53), Z(0x2a), Z(0x03), Z(0x83), Z(0x86),
+	Z(0xd1), Z(0xec), Z(0x50), Z(0xf0), Z(0x42), Z(0x78), Z(0x2f), Z(0x6d),
+	Z(0xbf), Z(0x80), Z(0x87), Z(0x27), Z(0x95), Z(0xe2), Z(0xc5), Z(0x5d),
+	Z(0xf9), Z(0x6f), Z(0xdb), Z(0xb4), Z(0x65), Z(0x6e), Z(0xe7), Z(0x24),
+	Z(0xc8), Z(0x1a), Z(0xbb), Z(0x49), Z(0xb5), Z(0x0a), Z(0x7d), Z(0xb9),
+	Z(0xe8), Z(0xdc), Z(0xb7), Z(0xd9), Z(0x45), Z(0x20), Z(0x1b), Z(0xce),
+	Z(0x59), Z(0x9d), Z(0x6b), Z(0xbd), Z(0x0e), Z(0x8f), Z(0xa3), Z(0xa9),
+	Z(0xbc), Z(0x74), Z(0xa6), Z(0xf6), Z(0x7f), Z(0x5f), Z(0xb1), Z(0x68),
+	Z(0x84), Z(0xbc), Z(0xa9), Z(0xfd), Z(0x55), Z(0x50), Z(0xe9), Z(0xb6),
+	Z(0x13), Z(0x5e), Z(0x07), Z(0xb8), Z(0x95), Z(0x02), Z(0xc0), Z(0xd0),
+	Z(0x6a), Z(0x1a), Z(0x85), Z(0xbd), Z(0xb6), Z(0xfd), Z(0xfe), Z(0x17),
+	Z(0x3f), Z(0x09), Z(0xa3), Z(0x8d), Z(0xfb), Z(0xed), Z(0xda), Z(0x1d),
+	Z(0x6d), Z(0x1c), Z(0x6c), Z(0x01), Z(0x5a), Z(0xe5), Z(0x71), Z(0x3e),
+	Z(0x8b), Z(0x6b), Z(0xbe), Z(0x29), Z(0xeb), Z(0x12), Z(0x19), Z(0x34),
+	Z(0xcd), Z(0xb3), Z(0xbd), Z(0x35), Z(0xea), Z(0x4b), Z(0xd5), Z(0xae),
+	Z(0x2a), Z(0x79), Z(0x5a), Z(0xa5), Z(0x32), Z(0x12), Z(0x7b), Z(0xdc),
+	Z(0x2c), Z(0xd0), Z(0x22), Z(0x4b), Z(0xb1), Z(0x85), Z(0x59), Z(0x80),
+	Z(0xc0), Z(0x30), Z(0x9f), Z(0x73), Z(0xd3), Z(0x14), Z(0x48), Z(0x40),
+	Z(0x07), Z(0x2d), Z(0x8f), Z(0x80), Z(0x0f), Z(0xce), Z(0x0b), Z(0x5e),
+	Z(0xb7), Z(0x5e), Z(0xac), Z(0x24), Z(0x94), Z(0x4a), Z(0x18), Z(0x15),
+	Z(0x05), Z(0xe8), Z(0x02), Z(0x77), Z(0xa9), Z(0xc7), Z(0x40), Z(0x45),
+	Z(0x89), Z(0xd1), Z(0xea), Z(0xde), Z(0x0c), Z(0x79), Z(0x2a), Z(0x99),
+	Z(0x6c), Z(0x3e), Z(0x95), Z(0xdd), Z(0x8c), Z(0x7d), Z(0xad), Z(0x6f),
+	Z(0xdc), Z(0xff), Z(0xfd), Z(0x62), Z(0x47), Z(0xb3), Z(0x21), Z(0x8a),
+	Z(0xec), Z(0x8e), Z(0x19), Z(0x18), Z(0xb4), Z(0x6e), Z(0x3d), Z(0xfd),
+	Z(0x74), Z(0x54), Z(0x1e), Z(0x04), Z(0x85), Z(0xd8), Z(0xbc), Z(0x1f),
+	Z(0x56), Z(0xe7), Z(0x3a), Z(0x56), Z(0x67), Z(0xd6), Z(0xc8), Z(0xa5),
+	Z(0xf3), Z(0x8e), Z(0xde), Z(0xae), Z(0x37), Z(0x49), Z(0xb7), Z(0xfa),
+	Z(0xc8), Z(0xf4), Z(0x1f), Z(0xe0), Z(0x2a), Z(0x9b), Z(0x15), Z(0xd1),
+	Z(0x34), Z(0x0e), Z(0xb5), Z(0xe0), Z(0x44), Z(0x78), Z(0x84), Z(0x59),
+	Z(0x56), Z(0x68), Z(0x77), Z(0xa5), Z(0x14), Z(0x06), Z(0xf5), Z(0x2f),
+	Z(0x8c), Z(0x8a), Z(0x73), Z(0x80), Z(0x76), Z(0xb4), Z(0x10), Z(0x86)
+};
+
+#undef Z
+#define Z(x) __constant_be32_to_cpu(x << 19)
+static const u32 sbox3[256] = {
+	Z(0xa9), Z(0x2a), Z(0x48), Z(0x51), Z(0x84), Z(0x7e), Z(0x49), Z(0xe2),
+	Z(0xb5), Z(0xb7), Z(0x42), Z(0x33), Z(0x7d), Z(0x5d), Z(0xa6), Z(0x12),
+	Z(0x44), Z(0x48), Z(0x6d), Z(0x28), Z(0xaa), Z(0x20), Z(0x6d), Z(0x57),
+	Z(0xd6), Z(0x6b), Z(0x5d), Z(0x72), Z(0xf0), Z(0x92), Z(0x5a), Z(0x1b),
+	Z(0x53), Z(0x80), Z(0x24), Z(0x70), Z(0x9a), Z(0xcc), Z(0xa7), Z(0x66),
+	Z(0xa1), Z(0x01), Z(0xa5), Z(0x41), Z(0x97), Z(0x41), Z(0x31), Z(0x82),
+	Z(0xf1), Z(0x14), Z(0xcf), Z(0x53), Z(0x0d), Z(0xa0), Z(0x10), Z(0xcc),
+	Z(0x2a), Z(0x7d), Z(0xd2), Z(0xbf), Z(0x4b), Z(0x1a), Z(0xdb), Z(0x16),
+	Z(0x47), Z(0xf6), Z(0x51), Z(0x36), Z(0xed), Z(0xf3), Z(0xb9), Z(0x1a),
+	Z(0xa7), Z(0xdf), Z(0x29), Z(0x43), Z(0x01), Z(0x54), Z(0x70), Z(0xa4),
+	Z(0xbf), Z(0xd4), Z(0x0b), Z(0x53), Z(0x44), Z(0x60), Z(0x9e), Z(0x23),
+	Z(0xa1), Z(0x18), Z(0x68), Z(0x4f), Z(0xf0), Z(0x2f), Z(0x82), Z(0xc2),
+	Z(0x2a), Z(0x41), Z(0xb2), Z(0x42), Z(0x0c), Z(0xed), Z(0x0c), Z(0x1d),
+	Z(0x13), Z(0x3a), Z(0x3c), Z(0x6e), Z(0x35), Z(0xdc), Z(0x60), Z(0x65),
+	Z(0x85), Z(0xe9), Z(0x64), Z(0x02), Z(0x9a), Z(0x3f), Z(0x9f), Z(0x87),
+	Z(0x96), Z(0xdf), Z(0xbe), Z(0xf2), Z(0xcb), Z(0xe5), Z(0x6c), Z(0xd4),
+	Z(0x5a), Z(0x83), Z(0xbf), Z(0x92), Z(0x1b), Z(0x94), Z(0x00), Z(0x42),
+	Z(0xcf), Z(0x4b), Z(0x00), Z(0x75), Z(0xba), Z(0x8f), Z(0x76), Z(0x5f),
+	Z(0x5d), Z(0x3a), Z(0x4d), Z(0x09), Z(0x12), Z(0x08), Z(0x38), Z(0x95),
+	Z(0x17), Z(0xe4), Z(0x01), Z(0x1d), Z(0x4c), Z(0xa9), Z(0xcc), Z(0x85),
+	Z(0x82), Z(0x4c), Z(0x9d), Z(0x2f), Z(0x3b), Z(0x66), Z(0xa1), Z(0x34),
+	Z(0x10), Z(0xcd), Z(0x59), Z(0x89), Z(0xa5), Z(0x31), Z(0xcf), Z(0x05),
+	Z(0xc8), Z(0x84), Z(0xfa), Z(0xc7), Z(0xba), Z(0x4e), Z(0x8b), Z(0x1a),
+	Z(0x19), Z(0xf1), Z(0xa1), Z(0x3b), Z(0x18), Z(0x12), Z(0x17), Z(0xb0),
+	Z(0x98), Z(0x8d), Z(0x0b), Z(0x23), Z(0xc3), Z(0x3a), Z(0x2d), Z(0x20),
+	Z(0xdf), Z(0x13), Z(0xa0), Z(0xa8), Z(0x4c), Z(0x0d), Z(0x6c), Z(0x2f),
+	Z(0x47), Z(0x13), Z(0x13), Z(0x52), Z(0x1f), Z(0x2d), Z(0xf5), Z(0x79),
+	Z(0x3d), Z(0xa2), Z(0x54), Z(0xbd), Z(0x69), Z(0xc8), Z(0x6b), Z(0xf3),
+	Z(0x05), Z(0x28), Z(0xf1), Z(0x16), Z(0x46), Z(0x40), Z(0xb0), Z(0x11),
+	Z(0xd3), Z(0xb7), Z(0x95), Z(0x49), Z(0xcf), Z(0xc3), Z(0x1d), Z(0x8f),
+	Z(0xd8), Z(0xe1), Z(0x73), Z(0xdb), Z(0xad), Z(0xc8), Z(0xc9), Z(0xa9),
+	Z(0xa1), Z(0xc2), Z(0xc5), Z(0xe3), Z(0xba), Z(0xfc), Z(0x0e), Z(0x25)
+};
+
+/*
+ * This is a 16 round Feistel network with permutation F_ENCRYPT
+ */
+#define F_ENCRYPT(R, L, sched)						\
+do {									\
+	union lc4 { u32 l; u8 c[4]; } u;				\
+	u.l = sched ^ R;						\
+	L ^= sbox0[u.c[0]] ^ sbox1[u.c[1]] ^ sbox2[u.c[2]] ^ sbox3[u.c[3]]; \
+} while(0)
+
+/*
+ * encryptor
+ */
+static void fcrypt_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+	const struct fcrypt_ctx *ctx = crypto_tfm_ctx(tfm);
+	struct {
+		u32 l, r;
+	} X;
+
+	memcpy(&X, src, sizeof(X));
+
+	F_ENCRYPT(X.r, X.l, ctx->sched[0x0]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0x1]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0x2]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0x3]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0x4]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0x5]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0x6]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0x7]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0x8]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0x9]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0xa]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0xb]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0xc]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0xd]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0xe]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0xf]);
+
+	memcpy(dst, &X, sizeof(X));
+}
+
+/*
+ * decryptor
+ */
+static void fcrypt_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+	const struct fcrypt_ctx *ctx = crypto_tfm_ctx(tfm);
+	struct {
+		u32 l, r;
+	} X;
+
+	memcpy(&X, src, sizeof(X));
+
+	F_ENCRYPT(X.l, X.r, ctx->sched[0xf]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0xe]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0xd]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0xc]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0xb]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0xa]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0x9]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0x8]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0x7]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0x6]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0x5]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0x4]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0x3]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0x2]);
+	F_ENCRYPT(X.l, X.r, ctx->sched[0x1]);
+	F_ENCRYPT(X.r, X.l, ctx->sched[0x0]);
+
+	memcpy(dst, &X, sizeof(X));
+}
+
+/*
+ * Generate a key schedule from key, the least significant bit in each key byte
+ * is parity and shall be ignored. This leaves 56 significant bits in the key
+ * to scatter over the 16 key schedules. For each schedule extract the low
+ * order 32 bits and use as schedule, then rotate right by 11 bits.
+ */
+static int fcrypt_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen)
+{
+	struct fcrypt_ctx *ctx = crypto_tfm_ctx(tfm);
+
+#if BITS_PER_LONG == 64  /* the 64-bit version can also be used for 32-bit
+			  * kernels - it seems to be faster but the code is
+			  * larger */
+
+	u64 k;	/* k holds all 56 non-parity bits */
+
+	/* discard the parity bits */
+	k = (*key++) >> 1;
+	k <<= 7;
+	k |= (*key++) >> 1;
+	k <<= 7;
+	k |= (*key++) >> 1;
+	k <<= 7;
+	k |= (*key++) >> 1;
+	k <<= 7;
+	k |= (*key++) >> 1;
+	k <<= 7;
+	k |= (*key++) >> 1;
+	k <<= 7;
+	k |= (*key++) >> 1;
+	k <<= 7;
+	k |= (*key) >> 1;
+
+	/* Use lower 32 bits for schedule, rotate by 11 each round (16 times) */
+	ctx->sched[0x0] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0x1] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0x2] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0x3] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0x4] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0x5] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0x6] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0x7] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0x8] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0x9] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0xa] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0xb] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0xc] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0xd] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0xe] = be32_to_cpu(k); ror56_64(k, 11);
+	ctx->sched[0xf] = be32_to_cpu(k);
+
+	return 0;
+#else
+	u32 hi, lo;		/* hi is upper 24 bits and lo lower 32, total 56 */
+
+	/* discard the parity bits */
+	lo = (*key++) >> 1;
+	lo <<= 7;
+	lo |= (*key++) >> 1;
+	lo <<= 7;
+	lo |= (*key++) >> 1;
+	lo <<= 7;
+	lo |= (*key++) >> 1;
+	hi = lo >> 4;
+	lo &= 0xf;
+	lo <<= 7;
+	lo |= (*key++) >> 1;
+	lo <<= 7;
+	lo |= (*key++) >> 1;
+	lo <<= 7;
+	lo |= (*key++) >> 1;
+	lo <<= 7;
+	lo |= (*key) >> 1;
+
+	/* Use lower 32 bits for schedule, rotate by 11 each round (16 times) */
+	ctx->sched[0x0] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0x1] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0x2] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0x3] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0x4] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0x5] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0x6] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0x7] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0x8] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0x9] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0xa] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0xb] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0xc] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0xd] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0xe] = be32_to_cpu(lo); ror56(hi, lo, 11);
+	ctx->sched[0xf] = be32_to_cpu(lo);
+	return 0;
+#endif
+}
+
+static struct crypto_alg fcrypt_alg = {
+	.cra_name		=	"fcrypt",
+	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize		=	8,
+	.cra_ctxsize		=	sizeof(struct fcrypt_ctx),
+	.cra_module		=	THIS_MODULE,
+	.cra_alignmask		=	3,
+	.cra_list		=	LIST_HEAD_INIT(fcrypt_alg.cra_list),
+	.cra_u			=	{ .cipher = {
+	.cia_min_keysize	=	8,
+	.cia_max_keysize	=	8,
+	.cia_setkey		=	fcrypt_setkey,
+	.cia_encrypt		=	fcrypt_encrypt,
+	.cia_decrypt		=	fcrypt_decrypt } }
+};
+
+static int __init init(void)
+{
+	return crypto_register_alg(&fcrypt_alg);
+}
+
+static void __exit fini(void)
+{
+	crypto_unregister_alg(&fcrypt_alg);
+}
+
+module_init(init);
+module_exit(fini);
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("FCrypt Cipher Algorithm");
+MODULE_AUTHOR("David Howells <dhowells@redhat.com>");
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index d671e89..eef0516 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -71,7 +71,8 @@ static char *check[] = {
 	"des", "md5", "des3_ede", "rot13", "sha1", "sha256", "blowfish",
 	"twofish", "serpent", "sha384", "sha512", "md4", "aes", "cast6",
 	"arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
-	"khazad", "wp512", "wp384", "wp256", "tnepres", "xeta", NULL
+	"khazad", "wp512", "wp384", "wp256", "tnepres", "xeta",  "fcrypt",
+	NULL
 };
 
 static void hexdump(unsigned char *buf, unsigned int len)
@@ -964,6 +965,12 @@ static void do_test(void)
 		test_cipher("ecb(xeta)", DECRYPT, xeta_dec_tv_template,
 			    XETA_DEC_TEST_VECTORS);
 
+		//FCrypt
+		test_cipher("pcbc(fcrypt)", ENCRYPT, fcrypt_pcbc_enc_tv_template,
+			    FCRYPT_ENC_TEST_VECTORS);
+		test_cipher("pcbc(fcrypt)", DECRYPT, fcrypt_pcbc_dec_tv_template,
+			    FCRYPT_DEC_TEST_VECTORS);
+
 		test_hash("sha384", sha384_tv_template, SHA384_TEST_VECTORS);
 		test_hash("sha512", sha512_tv_template, SHA512_TEST_VECTORS);
 		test_hash("wp512", wp512_tv_template, WP512_TEST_VECTORS);
@@ -1177,6 +1184,13 @@ static void do_test(void)
 			    XETA_DEC_TEST_VECTORS);
 		break;
 
+	case 31:
+		test_cipher("pcbc(fcrypt)", ENCRYPT, fcrypt_pcbc_enc_tv_template,
+			    FCRYPT_ENC_TEST_VECTORS);
+		test_cipher("pcbc(fcrypt)", DECRYPT, fcrypt_pcbc_dec_tv_template,
+			    FCRYPT_DEC_TEST_VECTORS);
+		break;
+
 	case 100:
 		test_hash("hmac(md5)", hmac_md5_tv_template,
 			  HMAC_MD5_TEST_VECTORS);
diff --git a/crypto/tcrypt.h b/crypto/tcrypt.h
index 48a8136..688cbeb 100644
--- a/crypto/tcrypt.h
+++ b/crypto/tcrypt.h
@@ -3316,6 +3316,134 @@ static struct cipher_testvec xeta_dec_tv
 	}
 };
 
+/* 
+ * FCrypt test vectors 
+ */
+#define FCRYPT_ENC_TEST_VECTORS	ARRAY_SIZE(fcrypt_pcbc_enc_tv_template)
+#define FCRYPT_DEC_TEST_VECTORS	ARRAY_SIZE(fcrypt_pcbc_dec_tv_template)
+
+static struct cipher_testvec fcrypt_pcbc_enc_tv_template[] = {
+	{ /* http://www.openafs.org/pipermail/openafs-devel/2000-December/005320.html */
+		.key	= { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		.klen	= 8,
+		.iv	= { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		.input	= { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		.ilen	= 8,
+		.result	= { 0x0E, 0x09, 0x00, 0xC7, 0x3E, 0xF7, 0xED, 0x41 },
+		.rlen	= 8,
+	}, {
+		.key	= { 0x11, 0x44, 0x77, 0xAA, 0xDD, 0x00, 0x33, 0x66 },
+		.klen	= 8,
+		.iv	= { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		.input	= { 0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0 },
+		.ilen	= 8,
+		.result	= { 0xD8, 0xED, 0x78, 0x74, 0x77, 0xEC, 0x06, 0x80 },
+		.rlen	= 8,
+	}, { /* From Arla */
+		.key	= { 0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87 },
+		.klen	= 8,
+		.iv	= { 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10 },
+		.input	= "The quick brown fox jumps over the lazy dogs.\0\0",
+		.ilen	= 48,
+		.result	= { 0x00, 0xf0, 0xe,  0x11, 0x75, 0xe6, 0x23, 0x82,
+			    0xee, 0xac, 0x98, 0x62, 0x44, 0x51, 0xe4, 0x84,
+			    0xc3, 0x59, 0xd8, 0xaa, 0x64, 0x60, 0xae, 0xf7,
+			    0xd2, 0xd9, 0x13, 0x79, 0x72, 0xa3, 0x45, 0x03,
+			    0x23, 0xb5, 0x62, 0xd7, 0x0c, 0xf5, 0x27, 0xd1,
+			    0xf8, 0x91, 0x3c, 0xac, 0x44, 0x22, 0x92, 0xef },
+		.rlen	= 48,
+	}, {
+		.key	= { 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10 },
+		.klen	= 8,
+		.iv	= { 0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87 },
+		.input	= "The quick brown fox jumps over the lazy dogs.\0\0",
+		.ilen	= 48,
+		.result	= { 0xca, 0x90, 0xf5, 0x9d, 0xcb, 0xd4, 0xd2, 0x3c,
+			    0x01, 0x88, 0x7f, 0x3e, 0x31, 0x6e, 0x62, 0x9d,
+			    0xd8, 0xe0, 0x57, 0xa3, 0x06, 0x3a, 0x42, 0x58,
+			    0x2a, 0x28, 0xfe, 0x72, 0x52, 0x2f, 0xdd, 0xe0,
+			    0x19, 0x89, 0x09, 0x1c, 0x2a, 0x8e, 0x8c, 0x94,
+			    0xfc, 0xc7, 0x68, 0xe4, 0x88, 0xaa, 0xde, 0x0f },
+		.rlen	= 48,
+	}, { /* split-page version */
+		.key	= { 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10 },
+		.klen	= 8,
+		.iv	= { 0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87 },
+		.input	= "The quick brown fox jumps over the lazy dogs.\0\0",
+		.ilen	= 48,
+		.result	= { 0xca, 0x90, 0xf5, 0x9d, 0xcb, 0xd4, 0xd2, 0x3c,
+			    0x01, 0x88, 0x7f, 0x3e, 0x31, 0x6e, 0x62, 0x9d,
+			    0xd8, 0xe0, 0x57, 0xa3, 0x06, 0x3a, 0x42, 0x58,
+			    0x2a, 0x28, 0xfe, 0x72, 0x52, 0x2f, 0xdd, 0xe0,
+			    0x19, 0x89, 0x09, 0x1c, 0x2a, 0x8e, 0x8c, 0x94,
+			    0xfc, 0xc7, 0x68, 0xe4, 0x88, 0xaa, 0xde, 0x0f },
+		.rlen	= 48,
+		.np	= 2,
+		.tap	= { 20, 28 },
+	}
+};
+
+static struct cipher_testvec fcrypt_pcbc_dec_tv_template[] = {
+	{ /* http://www.openafs.org/pipermail/openafs-devel/2000-December/005320.html */
+		.key	= { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		.klen	= 8,
+		.iv	= { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		.input	= { 0x0E, 0x09, 0x00, 0xC7, 0x3E, 0xF7, 0xED, 0x41 },
+		.ilen	= 8,
+		.result	= { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		.rlen	= 8,
+	}, {
+		.key	= { 0x11, 0x44, 0x77, 0xAA, 0xDD, 0x00, 0x33, 0x66 },
+		.klen	= 8,
+		.iv	= { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		.input	= { 0xD8, 0xED, 0x78, 0x74, 0x77, 0xEC, 0x06, 0x80 },
+		.ilen	= 8,
+		.result	= { 0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0 },
+		.rlen	= 8,
+	}, { /* From Arla */
+		.key	= { 0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87 },
+		.klen	= 8,
+		.iv	= { 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10 },
+		.input	= { 0x00, 0xf0, 0xe,  0x11, 0x75, 0xe6, 0x23, 0x82,
+			    0xee, 0xac, 0x98, 0x62, 0x44, 0x51, 0xe4, 0x84,
+			    0xc3, 0x59, 0xd8, 0xaa, 0x64, 0x60, 0xae, 0xf7,
+			    0xd2, 0xd9, 0x13, 0x79, 0x72, 0xa3, 0x45, 0x03,
+			    0x23, 0xb5, 0x62, 0xd7, 0x0c, 0xf5, 0x27, 0xd1,
+			    0xf8, 0x91, 0x3c, 0xac, 0x44, 0x22, 0x92, 0xef },
+		.ilen	= 48,
+		.result	= "The quick brown fox jumps over the lazy dogs.\0\0",
+		.rlen	= 48,
+	}, {
+		.key	= { 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10 },
+		.klen	= 8,
+		.iv	= { 0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87 },
+		.input	= { 0xca, 0x90, 0xf5, 0x9d, 0xcb, 0xd4, 0xd2, 0x3c,
+			    0x01, 0x88, 0x7f, 0x3e, 0x31, 0x6e, 0x62, 0x9d,
+			    0xd8, 0xe0, 0x57, 0xa3, 0x06, 0x3a, 0x42, 0x58,
+			    0x2a, 0x28, 0xfe, 0x72, 0x52, 0x2f, 0xdd, 0xe0,
+			    0x19, 0x89, 0x09, 0x1c, 0x2a, 0x8e, 0x8c, 0x94,
+			    0xfc, 0xc7, 0x68, 0xe4, 0x88, 0xaa, 0xde, 0x0f },
+		.ilen	= 48,
+		.result	= "The quick brown fox jumps over the lazy dogs.\0\0",
+		.rlen	= 48,
+	}, { /* split-page version */
+		.key	= { 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10 },
+		.klen	= 8,
+		.iv	= { 0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87 },
+		.input	= { 0xca, 0x90, 0xf5, 0x9d, 0xcb, 0xd4, 0xd2, 0x3c,
+			    0x01, 0x88, 0x7f, 0x3e, 0x31, 0x6e, 0x62, 0x9d,
+			    0xd8, 0xe0, 0x57, 0xa3, 0x06, 0x3a, 0x42, 0x58,
+			    0x2a, 0x28, 0xfe, 0x72, 0x52, 0x2f, 0xdd, 0xe0,
+			    0x19, 0x89, 0x09, 0x1c, 0x2a, 0x8e, 0x8c, 0x94,
+			    0xfc, 0xc7, 0x68, 0xe4, 0x88, 0xaa, 0xde, 0x0f },
+		.ilen	= 48,
+		.result	= "The quick brown fox jumps over the lazy dogs.\0\0",
+		.rlen	= 48,
+		.np	= 2,
+		.tap	= { 20, 28 },
+	}
+};
+
 /*
  * Compression stuff.
  */