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| author | Eric Biggers <ebiggers@google.com> | 2019-12-31 04:19:33 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-01-09 04:30:52 +0100 |
| commit | b529f1983b2dcc46354f311feda92e07b6e9e2da (patch) | |
| tree | 8f2ad13aee56ee35f00ba823fd338482c7fad9cd /drivers/crypto/atmel-sha.c | |
| parent | crypto: artpec6 - return correct error code for failed setkey() (diff) | |
| download | linux-b529f1983b2dcc46354f311feda92e07b6e9e2da.tar.xz linux-b529f1983b2dcc46354f311feda92e07b6e9e2da.zip | |
crypto: atmel-sha - fix error handling when setting hmac key
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>
Diffstat (limited to 'drivers/crypto/atmel-sha.c')
| -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 e8e4200c1ab3..d3bcd14201c2 100644 --- a/drivers/crypto/atmel-sha.c +++ b/drivers/crypto/atmel-sha.c @@ -1853,12 +1853,7 @@ 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) |