diff options
| author | Horia Geantă <horia.geanta@nxp.com> | 2019-07-31 16:08:04 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-08-09 15:11:45 +1000 |
| commit | 1ccb39eb5a9822543273c35f5114a9dc101e7315 (patch) | |
| tree | 4e10355aaadf59e04a606fd32e255cc91bd8d907 /drivers/crypto/caam/caamalg.c | |
| parent | 1984aaeec372fbfb597883074253d290cbd543d4 (diff) | |
crypto: caam - update IV only when crypto operation succeeds
skcipher encryption might fail and in some cases, like (invalid) input
length smaller then block size, updating the IV would lead to a useless
IV copy in case hardware issued an error.
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/caam/caamalg.c')
| -rw-r--r-- | drivers/crypto/caam/caamalg.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index 06b4f2d47be4..28d55a05b0f3 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -990,10 +990,9 @@ static void skcipher_encrypt_done(struct device *jrdev, u32 *desc, u32 err, * ciphertext block (CBC mode) or last counter (CTR mode). * This is used e.g. by the CTS mode. */ - if (ivsize) { + if (ivsize && !ecode) { memcpy(req->iv, (u8 *)edesc->sec4_sg + edesc->sec4_sg_bytes, ivsize); - print_hex_dump_debug("dstiv @"__stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 4, req->iv, edesc->src_nents > 1 ? 100 : ivsize, 1); @@ -1030,7 +1029,7 @@ static void skcipher_decrypt_done(struct device *jrdev, u32 *desc, u32 err, * ciphertext block (CBC mode) or last counter (CTR mode). * This is used e.g. by the CTS mode. */ - if (ivsize) { + if (ivsize && !ecode) { memcpy(req->iv, (u8 *)edesc->sec4_sg + edesc->sec4_sg_bytes, ivsize); |