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crypto: caam - check zero-length input

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Check zero-length input, for skcipher algorithm, to solve the extra
tests. This is a valid operation, therefore the API will return no error.

Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Horia Geanta <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Iuliana Prodan 2019-07-31 16:08:08 +03:00 committed by Herbert Xu
parent fcd23ed57c
commit 31bb2f0da1
3 changed files with 14 additions and 0 deletions
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6
drivers/crypto/caam/caamalg.c
View File

@ -1884,6 +1884,9 @@ static int skcipher_encrypt(struct skcipher_request *req)
u32 *desc;
int ret = 0;
if (!req->cryptlen)
return 0;
/* allocate extended descriptor */
edesc = skcipher_edesc_alloc(req, DESC_JOB_IO_LEN * CAAM_CMD_SZ);
if (IS_ERR(edesc))
@ -1918,6 +1921,9 @@ static int skcipher_decrypt(struct skcipher_request *req)
u32 *desc;
int ret = 0;
if (!req->cryptlen)
return 0;
/* allocate extended descriptor */
edesc = skcipher_edesc_alloc(req, DESC_JOB_IO_LEN * CAAM_CMD_SZ);
if (IS_ERR(edesc))

3
drivers/crypto/caam/caamalg_qi.c
View File

@ -1445,6 +1445,9 @@ static inline int skcipher_crypt(struct skcipher_request *req, bool encrypt)
struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher);
int ret;
if (!req->cryptlen)
return 0;
if (unlikely(caam_congested))
return -EAGAIN;

5
drivers/crypto/caam/caamalg_qi2.c
View File

@ -1499,6 +1499,9 @@ static int skcipher_encrypt(struct skcipher_request *req)
struct caam_request *caam_req = skcipher_request_ctx(req);
int ret;
if (!req->cryptlen)
return 0;
/* allocate extended descriptor */
edesc = skcipher_edesc_alloc(req);
if (IS_ERR(edesc))
@ -1527,6 +1530,8 @@ static int skcipher_decrypt(struct skcipher_request *req)
struct caam_request *caam_req = skcipher_request_ctx(req);
int ret;
if (!req->cryptlen)
return 0;
/* allocate extended descriptor */
edesc = skcipher_edesc_alloc(req);
if (IS_ERR(edesc))