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authorLeilei Zhao <leilei.zhao@atmel.com>2014-04-22 11:23:24 +0400
committerHerbert Xu <herbert@gondor.apana.org.au>2014-04-28 14:21:19 +0400
commit9f84951fc6f30eff20567632131c38725705753d (patch)
treed49ac2c03a1adaf10592a4c31120633b5df5053e /drivers/crypto
parente5d8c961c52f6324fa15f9f7c1b76f409e759b96 (diff)
downloadlinux-9f84951fc6f30eff20567632131c38725705753d.tar.xz
crypto: atmel-aes - check alignment of cfb64 mode
The length shoule be 64 bit alignment and the block size shoule be 64 bit in aes cfb64 mode. Signed-off-by: Leilei Zhao <leilei.zhao@atmel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/atmel-aes.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index 12628a75fbcc..a083474991ab 100644
--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -716,6 +716,12 @@ static int atmel_aes_crypt(struct ablkcipher_request *req, unsigned long mode)
return -EINVAL;
}
ctx->block_size = CFB32_BLOCK_SIZE;
+ } else if (mode & AES_FLAGS_CFB64) {
+ if (!IS_ALIGNED(req->nbytes, CFB64_BLOCK_SIZE)) {
+ pr_err("request size is not exact amount of CFB64 blocks\n");
+ return -EINVAL;
+ }
+ ctx->block_size = CFB64_BLOCK_SIZE;
} else {
if (!IS_ALIGNED(req->nbytes, AES_BLOCK_SIZE)) {
pr_err("request size is not exact amount of AES blocks\n");