blob: 4db534da15716184200650bce331848769876aa8 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/*
* anytun
*
* The secure anycast tunneling protocol (satp) defines a protocol used
* for communication between any combination of unicast and anycast
* tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
* mode and allows tunneling of every ETHER TYPE protocol (e.g.
* ethernet, ip, arp ...). satp directly includes cryptography and
* message authentication based on the methodes used by SRTP. It is
* intended to deliver a generic, scaleable and secure solution for
* tunneling and relaying of packets of any protocol.
*
*
* Copyright (C) 2007 anytun.org <satp@wirdorange.org>
*
* 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
*/
#ifndef _AUTHALGO_H_
#define _AUTHALGO_H_
#include "authTag.h"
#include "datatypes.h"
#include "buffer.h"
#include "threadUtils.hpp"
#include <gcrypt.h>
class AuthAlgo
{
public:
AuthAlgo() {};
virtual ~AuthAlgo() {};
virtual AuthTag calc(const Buffer& buf) { return AuthTag(0); };
};
class NullAuthAlgo : public AuthAlgo
{
public:
AuthTag calc(const Buffer& buf);
};
/**
* HMAC SHA1 Auth Tag Generator Class
*/
class Sha1AuthAlgo : public AuthAlgo
{
public:
Sha1AuthAlgo();
~Sha1AuthAlgo();
/**
* set the key for the auth algo
* @param key key for hmac calculation
*/
void setKey(Buffer key);
/**
* calculate the sha1 hmac
* @param buf buffer for message digest
* @return sha1 hmac
*/
AuthTag calc(const Buffer& buf);
protected:
static const char* MIN_GCRYPT_VERSION;
gcry_md_hd_t ctx_;
Mutex mutex_;
};
#endif
|
