/*
  *  OpenVPN -- An application to securely tunnel IP networks
  *             over a single UDP port, with support for SSL/TLS-based
  *             session authentication and key exchange,
  *             packet encryption, packet authentication, and
  *             packet compression.
  *

  *  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>

  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2
  *  as published by the Free Software Foundation.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program (see the file COPYING included with this
  *  distribution); if not, write to the Free Software Foundation, Inc.,
  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 /*
  * Each session is identified by a random 8-byte session identifier.
  *
  * For efficiency, the session id is only transmitted over the control
  * channel (which only sees traffic occasionally when keys are being
  * negotiated).  The data channel sees a smaller version of the session-id --
  * it is called the key_id and is currently 2 bits long.
  */
 

 #include "syshead.h"

 
 #if defined(USE_CRYPTO) && defined(USE_SSL)
 
 #include "error.h"
 #include "common.h"
 #include "crypto.h"
 #include "session_id.h"
 
 #include "memdbg.h"
 
 const struct session_id x_session_id_zero;
 
 void
 session_id_random (struct session_id *sid)
 {
   prng_bytes (sid->id, SID_SIZE);
 }
 
 const char *
 session_id_print (const struct session_id *sid, struct gc_arena *gc)
 {
   return format_hex (sid->id, SID_SIZE, 0, gc);
 }
 
 #else
 static void dummy(void) {}
 #endif /* USE_CRYPTO && USE_SSL*/