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crypto: hisilicon/sec2 - fix for aead auth key length

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[ Upstream commit 1b284ffc30b02808a0de698667cbcf5ce5f9144e ]

According to the HMAC RFC, the authentication key
can be 0 bytes, and the hardware can handle this
scenario. Therefore, remove the incorrect validation
for this case.

Fixes: 2f072d75d1 ("crypto: hisilicon - Add aead support on SEC2")
Signed-off-by: Wenkai Lin <linwenkai6@hisilicon.com>
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wenkai Lin
2025-02-05 11:56:26 +08:00
committed by Greg Kroah-Hartman
parent b6fc1fdd3e
commit 75f095daf6
1 changed files with 2 additions and 6 deletions
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8
drivers/crypto/hisilicon/sec2/sec_crypto.c
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@@ -1089,11 +1089,6 @@ static int sec_aead_auth_set_key(struct sec_auth_ctx *ctx,
struct crypto_shash *hash_tfm = ctx->hash_tfm;
int blocksize, digestsize, ret;
if (!keys->authkeylen) {
pr_err("hisi_sec2: aead auth key error!\n");
return -EINVAL;
}
blocksize = crypto_shash_blocksize(hash_tfm);
digestsize = crypto_shash_digestsize(hash_tfm);
if (keys->authkeylen > blocksize) {
@@ -1105,7 +1100,8 @@ static int sec_aead_auth_set_key(struct sec_auth_ctx *ctx,
}
ctx->a_key_len = digestsize;
} else {
memcpy(ctx->a_key, keys->authkey, keys->authkeylen);
if (keys->authkeylen)
memcpy(ctx->a_key, keys->authkey, keys->authkeylen);
ctx->a_key_len = keys->authkeylen;
}