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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/*
Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
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. If not, write to the
Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301 USA.
*/
/* dsa.hpp provides Digitial Signautre Algorithm see FIPS 186-2
*/
#ifndef TAO_CRYPT_DSA_HPP
#define TAO_CRYPT_DSA_HPP
#include "integer.hpp"
namespace TaoCrypt {
class Source;
class DSA_PublicKey {
protected:
Integer p_;
Integer q_;
Integer g_;
Integer y_;
public:
DSA_PublicKey() {}
explicit DSA_PublicKey(Source&);
void Initialize(Source&);
void Initialize(const Integer& p, const Integer& q, const Integer& g,
const Integer& y);
const Integer& GetModulus() const;
const Integer& GetSubGroupOrder() const;
const Integer& GetSubGroupGenerator() const;
const Integer& GetPublicPart() const;
void SetModulus(const Integer&);
void SetSubGroupOrder(const Integer&);
void SetSubGroupGenerator(const Integer&);
void SetPublicPart(const Integer&);
word32 SignatureLength() const;
DSA_PublicKey(const DSA_PublicKey&);
DSA_PublicKey& operator=(const DSA_PublicKey&);
void Swap(DSA_PublicKey& other);
};
class DSA_PrivateKey : public DSA_PublicKey {
Integer x_;
public:
DSA_PrivateKey() {}
explicit DSA_PrivateKey(Source&);
void Initialize(Source&);
void Initialize(const Integer& p, const Integer& q, const Integer& g,
const Integer& y, const Integer& x);
const Integer& GetPrivatePart() const;
void SetPrivatePart(const Integer&);
private:
DSA_PrivateKey(const DSA_PrivateKey&); // hide copy
DSA_PrivateKey& operator=(const DSA_PrivateKey&); // and assign
};
class DSA_Signer {
const DSA_PrivateKey& key_;
Integer r_;
Integer s_;
public:
explicit DSA_Signer(const DSA_PrivateKey&);
word32 Sign(const byte* sha_digest, byte* sig, RandomNumberGenerator&);
const Integer& GetR() const;
const Integer& GetS() const;
private:
DSA_Signer(const DSA_Signer&); // hide copy
DSA_Signer& operator=(DSA_Signer&); // and assign
};
class DSA_Verifier {
const DSA_PublicKey& key_;
Integer r_;
Integer s_;
public:
explicit DSA_Verifier(const DSA_PublicKey&);
bool Verify(const byte* sha_digest, const byte* sig);
const Integer& GetR() const;
const Integer& GetS() const;
private:
DSA_Verifier(const DSA_Verifier&); // hide copy
DSA_Verifier& operator=(const DSA_Verifier&); // and assign
};
} // namespace
#endif // TAO_CRYPT_DSA_HPP
|
