authAlgo.h

   1 /*
   2  *  anytun
   3  *
   4  *  The secure anycast tunneling protocol (satp) defines a protocol used
   5  *  for communication between any combination of unicast and anycast
   6  *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
   7  *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
   8  *  ethernet, ip, arp ...). satp directly includes cryptography and
   9  *  message authentication based on the methodes used by SRTP.  It is
  10  *  intended to deliver a generic, scaleable and secure solution for
  11  *  tunneling and relaying of packets of any protocol.
  12  *
  13  *
  14  *  Copyright (C) 2007 anytun.org <satp@wirdorange.org>
  15  *
  16  *  This program is free software; you can redistribute it and/or modify
  17  *  it under the terms of the GNU General Public License version 2
  18  *  as published by the Free Software Foundation.
  19  *
  20  *  This program is distributed in the hope that it will be useful,
  21  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  *  GNU General Public License for more details.
  24  *
  25  *  You should have received a copy of the GNU General Public License
  26  *  along with this program (see the file COPYING included with this
  27  *  distribution); if not, write to the Free Software Foundation, Inc.,
  28  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  29  */
  30
  31 #ifndef _AUTHALGO_H_
  32 #define _AUTHALGO_H_
  33
  34 #include "datatypes.h"
  35 #include "buffer.h"
  36
  37 class AuthAlgo
  38 {
  39 public:
  40   AuthAlgo() {};
  41   virtual ~AuthAlgo() {};
  42
  43   virtual auth_tag_t calc(const Buffer& buf) = 0;
  44 };
  45
  46 class NullAuthAlgo : public AuthAlgo
  47 {
  48 public:
  49   auth_tag_t calc(const Buffer& buf);
  50 };
  51
  52
  53 // HMAC_SHA1
  54 class HmacAuthAlgo : public AuthAlgo
  55 {
  56 public:
  57   auth_tag_t calc(const Buffer& buf);
  58 };
  59
  60 #endif