diff options
| author | Eric Biggers <ebiggers@google.com> | 2019-12-30 21:19:33 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-14 16:34:18 -0500 |
| commit | 1f42c6de7b941cfe42d801ead31aa7ca342a21c1 (patch) | |
| tree | aa458d138cc923d8310d16582ca673d0b0b19499 | |
| parent | fb42d3f4ec8677deee363e672d5a3fbba9a865f8 (diff) | |
crypto: atmel-sha - fix error handling when setting hmac key
commit b529f1983b2dcc46354f311feda92e07b6e9e2da upstream.
HMAC keys can be of any length, and atmel_sha_hmac_key_set() can only
fail due to -ENOMEM. But atmel_sha_hmac_setkey() incorrectly treated
any error as a "bad key length" error. Fix it to correctly propagate
the -ENOMEM error code and not set any tfm result flags.
Fixes: 81d8750b2b59 ("crypto: atmel-sha - add support to hmac(shaX)")
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/crypto/atmel-sha.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c index d32626458e67c..1f9c16395a3fc 100644 --- a/drivers/crypto/atmel-sha.c +++ b/drivers/crypto/atmel-sha.c @@ -1918,12 +1918,7 @@ static int atmel_sha_hmac_setkey(struct crypto_ahash *tfm, const u8 *key, { struct atmel_sha_hmac_ctx *hmac = crypto_ahash_ctx(tfm); - if (atmel_sha_hmac_key_set(&hmac->hkey, key, keylen)) { - crypto_ahash_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); - return -EINVAL; - } - - return 0; + return atmel_sha_hmac_key_set(&hmac->hkey, key, keylen); } static int atmel_sha_hmac_init(struct ahash_request *req) |