Commit 26d769ae authored by Tudor Ambarus's avatar Tudor Ambarus Committed by Herbert Xu
Browse files

crypto: atmel-aes - Add XTS input length constraint 



Input length smaller than block size does not make sense for XTS.

Signed-off-by: default avatarTudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 534b32a8

drivers/crypto/atmel-aes.c

+3 −0
Original line number Diff line number Diff line
@@ -1091,6 +1091,9 @@ static int atmel_aes_crypt(struct skcipher_request *req, unsigned long mode) 
	struct atmel_aes_dev *dd;

	u32 opmode = mode & AES_FLAGS_OPMODE_MASK;



	if (opmode == AES_FLAGS_XTS && req->cryptlen < XTS_BLOCK_SIZE)

		return -EINVAL;



	if ((opmode == AES_FLAGS_ECB || opmode == AES_FLAGS_CBC) &&

	    !IS_ALIGNED(req->cryptlen, crypto_skcipher_blocksize(skcipher)))

		return -EINVAL;