diff options
| author | Leilei Zhao | 2014-04-22 15:23:24 +0800 |
|---|---|---|
| committer | Herbert Xu | 2014-04-28 18:21:19 +0800 |
| commit | 9f84951fc6f30eff20567632131c38725705753d (patch) | |
| tree | d49ac2c03a1adaf10592a4c31120633b5df5053e /drivers | |
| parent | e5d8c961c52f6324fa15f9f7c1b76f409e759b96 (diff) | |
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')
| -rw-r--r-- | drivers/crypto/atmel-aes.c | 6 |
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"); |