blob: d7cb5893c9d5c6b943a0b297b04ed5168dd25747 (
plain)
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
|
/*
* CBC-MAC
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_CBC_MAC_H__
#define BOTAN_CBC_MAC_H__
#include <botan/mac.h>
#include <botan/block_cipher.h>
namespace Botan {
/**
* CBC-MAC
*/
class BOTAN_DLL CBC_MAC : public MessageAuthenticationCode
{
public:
std::string name() const;
MessageAuthenticationCode* clone() const;
size_t output_length() const { return m_cipher->block_size(); }
void clear();
Key_Length_Specification key_spec() const
{
return m_cipher->key_spec();
}
/**
* @param cipher the underlying block cipher to use
*/
CBC_MAC(BlockCipher* cipher);
private:
void add_data(const byte[], size_t);
void final_result(byte[]);
void key_schedule(const byte[], size_t);
std::unique_ptr<BlockCipher> m_cipher;
secure_vector<byte> m_state;
size_t m_position = 0;
};
}
#endif
|
