authAlgo.h

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00001 /*
00002  *  anytun
00003  *
00004  *  The secure anycast tunneling protocol (satp) defines a protocol used
00005  *  for communication between any combination of unicast and anycast
00006  *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
00007  *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
00008  *  ethernet, ip, arp ...). satp directly includes cryptography and
00009  *  message authentication based on the methodes used by SRTP.  It is
00010  *  intended to deliver a generic, scaleable and secure solution for
00011  *  tunneling and relaying of packets of any protocol.
00012  *
00013  *
00014  *  Copyright (C) 2007 anytun.org <satp@wirdorange.org>
00015  *
00016  *  This program is free software; you can redistribute it and/or modify
00017  *  it under the terms of the GNU General Public License version 2
00018  *  as published by the Free Software Foundation.
00019  *
00020  *  This program is distributed in the hope that it will be useful,
00021  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00022  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00023  *  GNU General Public License for more details.
00024  *
00025  *  You should have received a copy of the GNU General Public License
00026  *  along with this program (see the file COPYING included with this
00027  *  distribution); if not, write to the Free Software Foundation, Inc.,
00028  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00029  */
00030 
00031 #ifndef _AUTHALGO_H_
00032 #define _AUTHALGO_H_
00033 
00034 #include "datatypes.h"
00035 #include "buffer.h"
00036 
00037 class AuthAlgo
00038 {
00039 public:
00040   AuthAlgo() {};
00041   virtual ~AuthAlgo() {};
00042 
00043   virtual auth_tag_t calc(const Buffer& buf) = 0;
00044 };
00045 
00046 class NullAuthAlgo : public AuthAlgo
00047 {
00048 public:
00049   auth_tag_t calc(const Buffer& buf);
00050 };
00051 
00052 
00053 // HMAC_SHA1
00054 class HmacAuthAlgo : public AuthAlgo
00055 {
00056 public:
00057   auth_tag_t calc(const Buffer& buf);
00058 };
00059 
00060 #endif

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