From 96ee111a659e0f0bdfc48402b9d4162e14016ff1 Mon Sep 17 00:00:00 2001 From: Giovanni Cabiddu Date: Mon, 29 Apr 2019 16:43:20 +0100 Subject: [PATCH] crypto: qat - return error for block ciphers for invalid requests Return -EINVAL if a request for a block cipher is not multiple of the size of the block. This problem was found with by the new extra run-time crypto self test. Reviewed-by: Conor Mcloughlin Tested-by: Sergey Portnoy Signed-off-by: Giovanni Cabiddu Signed-off-by: Herbert Xu --- drivers/crypto/qat/qat_common/qat_algs.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/crypto/qat/qat_common/qat_algs.c b/drivers/crypto/qat/qat_common/qat_algs.c index f9a46918c9d1..868fefa9bb65 100644 --- a/drivers/crypto/qat/qat_common/qat_algs.c +++ b/drivers/crypto/qat/qat_common/qat_algs.c @@ -1096,6 +1096,14 @@ static int qat_alg_ablkcipher_encrypt(struct ablkcipher_request *req) return -EINPROGRESS; } +static int qat_alg_ablkcipher_blk_encrypt(struct ablkcipher_request *req) +{ + if (req->nbytes % AES_BLOCK_SIZE != 0) + return -EINVAL; + + return qat_alg_ablkcipher_encrypt(req); +} + static int qat_alg_ablkcipher_decrypt(struct ablkcipher_request *req) { struct crypto_ablkcipher *atfm = crypto_ablkcipher_reqtfm(req); @@ -1145,6 +1153,13 @@ static int qat_alg_ablkcipher_decrypt(struct ablkcipher_request *req) return -EINPROGRESS; } +static int qat_alg_ablkcipher_blk_decrypt(struct ablkcipher_request *req) +{ + if (req->nbytes % AES_BLOCK_SIZE != 0) + return -EINVAL; + + return qat_alg_ablkcipher_decrypt(req); +} static int qat_alg_aead_init(struct crypto_aead *tfm, enum icp_qat_hw_auth_algo hash, const char *hash_name) @@ -1304,8 +1319,8 @@ static struct crypto_alg qat_algs[] = { { .cra_u = { .ablkcipher = { .setkey = qat_alg_ablkcipher_cbc_setkey, - .decrypt = qat_alg_ablkcipher_decrypt, - .encrypt = qat_alg_ablkcipher_encrypt, + .decrypt = qat_alg_ablkcipher_blk_decrypt, + .encrypt = qat_alg_ablkcipher_blk_encrypt, .min_keysize = AES_MIN_KEY_SIZE, .max_keysize = AES_MAX_KEY_SIZE, .ivsize = AES_BLOCK_SIZE, @@ -1348,8 +1363,8 @@ static struct crypto_alg qat_algs[] = { { .cra_u = { .ablkcipher = { .setkey = qat_alg_ablkcipher_xts_setkey, - .decrypt = qat_alg_ablkcipher_decrypt, - .encrypt = qat_alg_ablkcipher_encrypt, + .decrypt = qat_alg_ablkcipher_blk_decrypt, + .encrypt = qat_alg_ablkcipher_blk_encrypt, .min_keysize = 2 * AES_MIN_KEY_SIZE, .max_keysize = 2 * AES_MAX_KEY_SIZE, .ivsize = AES_BLOCK_SIZE, -- 2.30.2