diff options
Diffstat (limited to 'net/sctp/sm_make_chunk.c')
| -rw-r--r-- | net/sctp/sm_make_chunk.c | 31 |
1 files changed, 7 insertions, 24 deletions
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index e1c5fc2be6b..a193f3bc814 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -1589,8 +1589,6 @@ static sctp_cookie_param_t *sctp_pack_cookie(const struct sctp_endpoint *ep, struct sctp_signed_cookie *cookie; struct scatterlist sg; int headersize, bodysize; - unsigned int keylen; - char *key; /* Header size is static data prior to the actual cookie, including * any padding. @@ -1650,12 +1648,11 @@ static sctp_cookie_param_t *sctp_pack_cookie(const struct sctp_endpoint *ep, /* Sign the message. */ sg_init_one(&sg, &cookie->c, bodysize); - keylen = SCTP_SECRET_SIZE; - key = (char *)ep->secret_key[ep->current_key]; desc.tfm = sctp_sk(ep->base.sk)->hmac; desc.flags = 0; - if (crypto_hash_setkey(desc.tfm, key, keylen) || + if (crypto_hash_setkey(desc.tfm, ep->secret_key, + sizeof(ep->secret_key)) || crypto_hash_digest(&desc, &sg, bodysize, cookie->signature)) goto free_cookie; } @@ -1682,8 +1679,7 @@ struct sctp_association *sctp_unpack_cookie( int headersize, bodysize, fixed_size; __u8 *digest = ep->digest; struct scatterlist sg; - unsigned int keylen, len; - char *key; + unsigned int len; sctp_scope_t scope; struct sk_buff *skb = chunk->skb; struct timeval tv; @@ -1718,34 +1714,21 @@ struct sctp_association *sctp_unpack_cookie( goto no_hmac; /* Check the signature. */ - keylen = SCTP_SECRET_SIZE; sg_init_one(&sg, bear_cookie, bodysize); - key = (char *)ep->secret_key[ep->current_key]; desc.tfm = sctp_sk(ep->base.sk)->hmac; desc.flags = 0; memset(digest, 0x00, SCTP_SIGNATURE_SIZE); - if (crypto_hash_setkey(desc.tfm, key, keylen) || + if (crypto_hash_setkey(desc.tfm, ep->secret_key, + sizeof(ep->secret_key)) || crypto_hash_digest(&desc, &sg, bodysize, digest)) { *error = -SCTP_IERROR_NOMEM; goto fail; } if (memcmp(digest, cookie->signature, SCTP_SIGNATURE_SIZE)) { - /* Try the previous key. */ - key = (char *)ep->secret_key[ep->last_key]; - memset(digest, 0x00, SCTP_SIGNATURE_SIZE); - if (crypto_hash_setkey(desc.tfm, key, keylen) || - crypto_hash_digest(&desc, &sg, bodysize, digest)) { - *error = -SCTP_IERROR_NOMEM; - goto fail; - } - - if (memcmp(digest, cookie->signature, SCTP_SIGNATURE_SIZE)) { - /* Yikes! Still bad signature! */ - *error = -SCTP_IERROR_BAD_SIG; - goto fail; - } + *error = -SCTP_IERROR_BAD_SIG; + goto fail; } no_hmac: |