[CRYPTO] aead: Return EBADMSG for ICV mismatch

This patch changes gcm/authenc to return EBADMSG instead of EINVAL for
ICV mismatches.  This convention has already been adopted by IPsec.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/authenc.c b/crypto/authenc.c
index 82e03ff..6c9104e 100644 (file)
--- a/crypto/authenc.c
+++ b/crypto/authenc.c
@@ -200,7 +200,7 @@ auth_unlock:
 
        authsize = crypto_aead_authsize(authenc);
        scatterwalk_map_and_copy(ihash, src, cryptlen, authsize, 0);
-       return memcmp(ihash, ohash, authsize) ? -EINVAL : 0;
+       return memcmp(ihash, ohash, authsize) ? -EBADMSG: 0;
 }
 
 static void crypto_authenc_decrypt_done(struct crypto_async_request *req,

diff --git a/crypto/gcm.c b/crypto/gcm.c
index ed8a626..d60c340 100644 (file)
--- a/crypto/gcm.c
+++ b/crypto/gcm.c
@@ -327,7 +327,7 @@ static int crypto_gcm_decrypt(struct aead_request *req)
 
        scatterwalk_map_and_copy(iauth_tag, req->src, cryptlen, authsize, 0);
        if (memcmp(iauth_tag, auth_tag, authsize))
-               return -EINVAL;
+               return -EBADMSG;
 
        return crypto_ablkcipher_decrypt(&abreq);
 }