From: Uri Shir <uri.shir@arm.com>
To: Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
Gilad <gilad@benyossef.com>
Cc: linux-crypto@vger.kernel.org
Subject: [PATCH] crypto: ccree - enable CTS support in AES-XTS
Date: Sun, 8 Sep 2019 11:04:26 +0300 [thread overview]
Message-ID: <1567929866-7089-1-git-send-email-uri.shir@arm.com> (raw)
In XTS encryption/decryption the plaintext byte size
can be >= AES_BLOCK_SIZE. This patch enable the AES-XTS ciphertext
stealing implementation in ccree driver.
Signed-off-by: Uri Shir <uri.shir@arm.com>
---
drivers/crypto/ccree/cc_cipher.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)
diff --git a/drivers/crypto/ccree/cc_cipher.c b/drivers/crypto/ccree/cc_cipher.c
index 5b58226..a95d3bd 100644
--- a/drivers/crypto/ccree/cc_cipher.c
+++ b/drivers/crypto/ccree/cc_cipher.c
@@ -116,10 +116,6 @@ static int validate_data_size(struct cc_cipher_ctx *ctx_p,
case S_DIN_to_AES:
switch (ctx_p->cipher_mode) {
case DRV_CIPHER_XTS:
- if (size >= AES_BLOCK_SIZE &&
- IS_ALIGNED(size, AES_BLOCK_SIZE))
- return 0;
- break;
case DRV_CIPHER_CBC_CTS:
if (size >= AES_BLOCK_SIZE)
return 0;
@@ -945,7 +941,7 @@ static const struct cc_alg_template skcipher_algs[] = {
{
.name = "xts(paes)",
.driver_name = "xts-paes-ccree",
- .blocksize = AES_BLOCK_SIZE,
+ .blocksize = 1,
.template_skcipher = {
.setkey = cc_cipher_sethkey,
.encrypt = cc_cipher_encrypt,
@@ -963,7 +959,7 @@ static const struct cc_alg_template skcipher_algs[] = {
{
.name = "xts512(paes)",
.driver_name = "xts-paes-du512-ccree",
- .blocksize = AES_BLOCK_SIZE,
+ .blocksize = 1,
.template_skcipher = {
.setkey = cc_cipher_sethkey,
.encrypt = cc_cipher_encrypt,
@@ -982,7 +978,7 @@ static const struct cc_alg_template skcipher_algs[] = {
{
.name = "xts4096(paes)",
.driver_name = "xts-paes-du4096-ccree",
- .blocksize = AES_BLOCK_SIZE,
+ .blocksize = 1,
.template_skcipher = {
.setkey = cc_cipher_sethkey,
.encrypt = cc_cipher_encrypt,
@@ -1203,7 +1199,7 @@ static const struct cc_alg_template skcipher_algs[] = {
{
.name = "xts(aes)",
.driver_name = "xts-aes-ccree",
- .blocksize = AES_BLOCK_SIZE,
+ .blocksize = 1,
.template_skcipher = {
.setkey = cc_cipher_setkey,
.encrypt = cc_cipher_encrypt,
@@ -1220,7 +1216,7 @@ static const struct cc_alg_template skcipher_algs[] = {
{
.name = "xts512(aes)",
.driver_name = "xts-aes-du512-ccree",
- .blocksize = AES_BLOCK_SIZE,
+ .blocksize = 1,
.template_skcipher = {
.setkey = cc_cipher_setkey,
.encrypt = cc_cipher_encrypt,
@@ -1238,7 +1234,7 @@ static const struct cc_alg_template skcipher_algs[] = {
{
.name = "xts4096(aes)",
.driver_name = "xts-aes-du4096-ccree",
- .blocksize = AES_BLOCK_SIZE,
+ .blocksize = 1,
.template_skcipher = {
.setkey = cc_cipher_setkey,
.encrypt = cc_cipher_encrypt,
--
2.7.4
next reply other threads:[~2019-09-08 8:04 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-08 8:04 Uri Shir [this message]
2019-09-08 8:10 ` [PATCH] crypto: ccree - enable CTS support in AES-XTS Gilad Ben-Yossef
2019-09-09 12:20 ` Ard Biesheuvel
2019-09-09 12:34 ` Gilad Ben-Yossef
2019-09-09 14:38 ` Ard Biesheuvel
2019-09-09 15:27 ` Gilad Ben-Yossef
2019-09-10 1:21 ` Herbert Xu
2019-09-13 11:31 ` Herbert Xu
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