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
|
/*
* GOST 34.10-2001
* (C) 2007 Falko Strenzke, FlexSecure GmbH
* Manuel Hartl, FlexSecure GmbH
* (C) 2008-2009 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_GOST_3410_KEY_H__
#define BOTAN_GOST_3410_KEY_H__
#include <botan/ecc_key.h>
namespace Botan {
/**
* This class represents GOST_3410 Public Keys.
*/
class BOTAN_DLL GOST_3410_PublicKey : public virtual EC_PublicKey,
public PK_Verifying_wo_MR_Key
{
public:
/**
* Construct a public key from a given public point.
* @param dom_par the domain parameters associated with this key
* @param public_point the public point defining this key
*/
GOST_3410_PublicKey(const EC_Domain_Params& dom_par,
const PointGFp& public_point) :
EC_PublicKey(dom_par, public_point) {}
/**
* Construct from X.509 algorithm id and subject public key bits
*/
GOST_3410_PublicKey(const AlgorithmIdentifier& alg_id,
const MemoryRegion<byte>& key_bits);
/**
* Get this keys algorithm name.
* @result this keys algorithm name
*/
std::string algo_name() const { return "GOST-34.10"; }
MemoryVector<byte> x509_subject_public_key() const;
/**
* Get the maximum number of bits allowed to be fed to this key.
* This is the bitlength of the order of the base point.
* @result the maximum number of input bits
*/
u32bit max_input_bits() const { return domain().get_order().bits(); }
u32bit message_parts() const { return 2; }
u32bit message_part_size() const
{ return domain().get_order().bytes(); }
/**
* Verify a message with this key.
* @param message the byte array containing the message
* @param mess_len the number of bytes in the message byte array
* @param signature the byte array containing the signature
* @param sig_len the number of bytes in the signature byte array
*/
bool verify(const byte message[], u32bit mess_len,
const byte signature[], u32bit sig_len) const;
protected:
GOST_3410_PublicKey() {}
};
/**
* This class represents GOST_3410 Private Keys
*/
class BOTAN_DLL GOST_3410_PrivateKey : public GOST_3410_PublicKey,
public EC_PrivateKey,
public PK_Signing_Key
{
public:
GOST_3410_PrivateKey(const AlgorithmIdentifier& alg_id,
const MemoryRegion<byte>& key_bits) :
EC_PrivateKey(alg_id, key_bits) {}
/**
* Generate a new private key
* @param the domain parameters to used for this key
*/
GOST_3410_PrivateKey(RandomNumberGenerator& rng,
const EC_Domain_Params& domain) :
EC_PrivateKey(rng, domain) {}
/**
* Load a private key
* @param domain parameters
* @param x the private key
*/
GOST_3410_PrivateKey(const EC_Domain_Params& domain, const BigInt& x) :
EC_PrivateKey(domain, x) {}
/**
* Sign a message with this key.
* @param message the byte array representing the message to be signed
* @param mess_len the length of the message byte array
* @result the signature
*/
SecureVector<byte> sign(const byte message[], u32bit mess_len,
RandomNumberGenerator& rng) const;
};
}
#endif
|
