p+=i;
l=i;
+ /* Copy the finished so we can use it for
+ renegotiation checks */
+ if(s->type == SSL_ST_CONNECT)
+ {
+ OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
+ memcpy(s->s3->previous_client_finished,
+ s->s3->tmp.finish_md, i);
+ s->s3->previous_client_finished_len=i;
+ }
+ else
+ {
+ OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
+ memcpy(s->s3->previous_server_finished,
+ s->s3->tmp.finish_md, i);
+ s->s3->previous_server_finished_len=i;
+ }
+
#ifdef OPENSSL_SYS_WIN16
/* MSVC 1.5 does not clear the top bytes of the word unless
* I do this.
return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
}
+#ifndef OPENSSL_NO_NEXTPROTONEG
+/* ssl3_take_mac calculates the Finished MAC for the handshakes messages seen to far. */
+static void ssl3_take_mac(SSL *s)
+ {
+ const char *sender;
+ int slen;
+
+ if (s->state & SSL_ST_CONNECT)
+ {
+ sender=s->method->ssl3_enc->server_finished_label;
+ slen=s->method->ssl3_enc->server_finished_label_len;
+ }
+ else
+ {
+ sender=s->method->ssl3_enc->client_finished_label;
+ slen=s->method->ssl3_enc->client_finished_label_len;
+ }
+
+ s->s3->tmp.peer_finish_md_len = s->method->ssl3_enc->final_finish_mac(s,
+ sender,slen,s->s3->tmp.peer_finish_md);
+ }
+#endif
+
int ssl3_get_finished(SSL *s, int a, int b)
{
int al,i,ok;
long n;
unsigned char *p;
+#ifdef OPENSSL_NO_NEXTPROTONEG
/* the mac has already been generated when we received the
- * change cipher spec message and is in s->s3->tmp.peer_finish_md
+ * change cipher spec message and is in s->s3->tmp.peer_finish_md.
*/
+#endif
n=s->method->ssl_get_message(s,
a,
goto f_err;
}
- if (memcmp(p, s->s3->tmp.peer_finish_md, i) != 0)
+ if (CRYPTO_memcmp(p, s->s3->tmp.peer_finish_md, i) != 0)
{
al=SSL_AD_DECRYPT_ERROR;
SSLerr(SSL_F_SSL3_GET_FINISHED,SSL_R_DIGEST_CHECK_FAILED);
goto f_err;
}
+ /* Copy the finished so we can use it for
+ renegotiation checks */
+ if(s->type == SSL_ST_ACCEPT)
+ {
+ OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
+ memcpy(s->s3->previous_client_finished,
+ s->s3->tmp.peer_finish_md, i);
+ s->s3->previous_client_finished_len=i;
+ }
+ else
+ {
+ OPENSSL_assert(i <= EVP_MAX_MD_SIZE);
+ memcpy(s->s3->previous_server_finished,
+ s->s3->tmp.peer_finish_md, i);
+ s->s3->previous_server_finished_len=i;
+ }
+
return(1);
f_err:
ssl3_send_alert(s,SSL3_AL_FATAL,al);
return(0);
}
X509_verify_cert(&xs_ctx);
+ /* Don't leave errors in the queue */
+ ERR_clear_error();
for (i=0; i < sk_X509_num(xs_ctx.chain); i++)
{
x = sk_X509_value(xs_ctx.chain, i);
s->init_num += i;
n -= i;
}
+
+#ifndef OPENSSL_NO_NEXTPROTONEG
+ /* If receiving Finished, record MAC of prior handshake messages for
+ * Finished verification. */
+ if (*s->init_buf->data == SSL3_MT_FINISHED)
+ ssl3_take_mac(s);
+#endif
+
+ /* Feed this message into MAC computation. */
ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num + 4);
if (s->msg_callback)
s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data, (size_t)s->init_num + 4, s, s->msg_callback_arg);