blob: 15015c76d4f7fcc1240b8cead56935cf6848f169 (
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
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
|
/*
* ECDSA
* (C) 2007 Falko Strenzke, FlexSecure GmbH
* (C) 2008 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_ECDSA_SIGNATURE_H__
#define BOTAN_ECDSA_SIGNATURE_H__
#include <botan/bigint.h>
#include <botan/der_enc.h>
#include <botan/ber_dec.h>
namespace Botan {
class BOTAN_DLL ECDSA_Signature
{
public:
friend class ECDSA_Signature_Decoder;
ECDSA_Signature() {}
ECDSA_Signature(const BigInt& r, const BigInt& s);
ECDSA_Signature(ECDSA_Signature const& other);
ECDSA_Signature const& operator=(ECDSA_Signature const& other);
const BigInt& get_r() const { return m_r; }
const BigInt& get_s() const { return m_s; }
/**
* return the r||s
*/
SecureVector<byte> const get_concatenation() const;
private:
BigInt m_r;
BigInt m_s;
};
/* Equality of ECDSA_Signature */
bool operator==(const ECDSA_Signature& lhs, const ECDSA_Signature& rhs);
inline bool operator!=(const ECDSA_Signature& lhs, const ECDSA_Signature& rhs)
{
return !(lhs == rhs);
}
class BOTAN_DLL ECDSA_Signature_Decoder
{
public:
void signature_bits(const MemoryRegion<byte>& bits)
{
BER_Decoder(bits)
.start_cons(SEQUENCE)
.decode(m_signature->m_r)
.decode(m_signature->m_s)
.verify_end()
.end_cons();
}
ECDSA_Signature_Decoder(ECDSA_Signature* signature) : m_signature(signature)
{}
private:
ECDSA_Signature* m_signature;
};
class BOTAN_DLL ECDSA_Signature_Encoder
{
public:
MemoryVector<byte> signature_bits() const
{
return DER_Encoder()
.start_cons(SEQUENCE)
.encode(m_signature->get_r())
.encode(m_signature->get_s())
.end_cons()
.get_contents();
}
ECDSA_Signature_Encoder(const ECDSA_Signature* signature) : m_signature(signature)
{}
private:
const ECDSA_Signature* m_signature;
};
ECDSA_Signature const decode_seq(MemoryRegion<byte> const& seq);
ECDSA_Signature const decode_concatenation(MemoryRegion<byte> const& concatenation);
}
#endif
|
