diff options
| author | Martin Hicks <mort@bork.org> | 2017-05-02 09:38:35 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-21 07:42:23 +0200 |
| commit | 2ff2cc768eb75b82b5df60d06e8316d4ea62c111 (patch) | |
| tree | a3e84e1c416349c9efc4cefee08d499da64f8907 | |
| parent | 38dfd2e3a67367c701db106a1b600212efc4f93a (diff) | |
crypto: talitos - Extend max key length for SHA384/512-HMAC and AEAD
commit 03d2c5114c95797c0aa7d9f463348b171a274fd4 upstream.
An updated patch that also handles the additional key length requirements
for the AEAD algorithms.
The max keysize is not 96. For SHA384/512 it's 128, and for the AEAD
algorithms it's longer still. Extend the max keysize for the
AEAD size for AES256 + HMAC(SHA512).
Fixes: 357fb60502ede ("crypto: talitos - add sha224, sha384 and sha512 to existing AEAD algorithms")
Signed-off-by: Martin Hicks <mort@bork.org>
Acked-by: Horia Geantă <horia.geanta@nxp.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/talitos.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index 0418a2f41dc0..571de2f284cf 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -816,7 +816,7 @@ static void talitos_unregister_rng(struct device *dev) * HMAC_SNOOP_NO_AFEA (HSNA) instead of type IPSEC_ESP */ #define TALITOS_CRA_PRIORITY_AEAD_HSNA (TALITOS_CRA_PRIORITY - 1) -#define TALITOS_MAX_KEY_SIZE 96 +#define TALITOS_MAX_KEY_SIZE (AES_MAX_KEY_SIZE + SHA512_BLOCK_SIZE) #define TALITOS_MAX_IV_LENGTH 16 /* max of AES_BLOCK_SIZE, DES3_EDE_BLOCK_SIZE */ struct talitos_ctx { @@ -1495,6 +1495,11 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *cipher, { struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); + if (keylen > TALITOS_MAX_KEY_SIZE) { + crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); + return -EINVAL; + } + memcpy(&ctx->key, key, keylen); ctx->keylen = keylen; |