/*
* Secure RTP with libgcrypt
- * Copyright (C) 2007 Rémi Denis-Courmont <rdenis # simphalempin , com>
+ * Copyright (C) 2007 Rémi Denis-Courmont
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
srtp_send (srtp_session_t *s, uint8_t *buf, size_t *lenp, size_t bufsize)
{
size_t len = *lenp;
- int val = srtp_crypt (s, buf, len);
- if (val)
- return val;
+ size_t tag_len = s->tag_len;
if (!(s->flags & SRTP_UNAUTHENTICATED))
{
- size_t tag_len = s->tag_len;
*lenp = len + tag_len;
if (bufsize < (len + tag_len))
return ENOSPC;
+ }
+
+ int val = srtp_crypt (s, buf, len);
+ if (val)
+ return val;
+ if (!(s->flags & SRTP_UNAUTHENTICATED))
+ {
uint32_t roc = srtp_compute_roc (s, rtp_seq (buf));
const uint8_t *tag = rtp_digest (s, buf, len, roc);
if (rcc_mode (s))