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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/*
* PSSR
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_PSSR_H_
#define BOTAN_PSSR_H_
#include <botan/emsa.h>
#include <botan/hash.h>
namespace Botan {
/**
* PSSR (called EMSA4 in IEEE 1363 and in old versions of the library)
*/
class BOTAN_PUBLIC_API(2,0) PSSR final : public EMSA
{
public:
/**
* @param hash the hash function to use
*/
explicit PSSR(HashFunction* hash);
/**
* @param hash the hash function to use
* @param salt_size the size of the salt to use in bytes
*/
PSSR(HashFunction* hash, size_t salt_size);
EMSA* clone() override;
std::string name() const override;
AlgorithmIdentifier config_for_x509(const Private_Key& key,
const std::string& cert_hash_name) const override;
private:
void update(const uint8_t input[], size_t length) override;
secure_vector<uint8_t> raw_data() override;
secure_vector<uint8_t> encoding_of(const secure_vector<uint8_t>& msg,
size_t output_bits,
RandomNumberGenerator& rng) override;
bool verify(const secure_vector<uint8_t>& coded,
const secure_vector<uint8_t>& raw,
size_t key_bits) override;
std::unique_ptr<HashFunction> m_hash;
size_t m_salt_size;
bool m_required_salt_len;
};
/**
* PSSR_Raw
* This accepts a pre-hashed buffer
*/
class BOTAN_PUBLIC_API(2,3) PSSR_Raw final : public EMSA
{
public:
/**
* @param hash the hash function to use
*/
explicit PSSR_Raw(HashFunction* hash);
/**
* @param hash the hash function to use
* @param salt_size the size of the salt to use in bytes
*/
PSSR_Raw(HashFunction* hash, size_t salt_size);
EMSA* clone() override;
std::string name() const override;
private:
void update(const uint8_t input[], size_t length) override;
secure_vector<uint8_t> raw_data() override;
secure_vector<uint8_t> encoding_of(const secure_vector<uint8_t>& msg,
size_t output_bits,
RandomNumberGenerator& rng) override;
bool verify(const secure_vector<uint8_t>& coded,
const secure_vector<uint8_t>& raw,
size_t key_bits) override;
std::unique_ptr<HashFunction> m_hash;
secure_vector<uint8_t> m_msg;
size_t m_salt_size;
bool m_required_salt_len;
};
}
#endif
|
