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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/*************************************************
* ECDSA Header File *
* (C) 2007 Falko Strenzke, FlexSecure GmbH *
* Manuel hartl, FlexSecure GmbH *
* (C) 2008 Jack Lloyd *
*************************************************/
#ifndef BOTAN_ECDSA_KEY_H__
#define BOTAN_ECDSA_KEY_H__
#include <botan/ecc_key.h>
namespace Botan {
/**
* This class represents ECDSA Public Keys.
*/
class ECDSA_PublicKey : public virtual EC_PublicKey,
public PK_Verifying_wo_MR_Key
{
public:
/**
* Get this keys algorithm name.
* @result this keys algorithm name ("ECDSA")
*/
std::string algo_name() const
{
return "ECDSA";
}
/**
* 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;
/**
* 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;
/**
* Default constructor. Use this one if you want to later fill this object with data
* from an encoded key.
*/
ECDSA_PublicKey() {}
/**
* 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
*/
ECDSA_PublicKey(EC_Domain_Params const& dom_par, Botan::PointGFp const& public_point); // sets core
ECDSA_PublicKey const& operator= (ECDSA_PublicKey const& rhs);
ECDSA_PublicKey(ECDSA_PublicKey const& other);
/**
* Set the domain parameters of this key. This function has to be
* used when a key encoded without domain parameters was decoded into
* this key. Otherwise it will not be able to verify a signature.
* @param dom_pars the domain_parameters associated with this key
* @throw Invalid_Argument if the point was found not to be satisfying the
* curve equation of the provided domain parameters
* or if this key already has domain parameters set
* and these are differing from those given as the parameter
*/
void set_domain_parameters(EC_Domain_Params const& dom_pars);
/**
* Make sure that the public point and domain parameters of this key are set.
* @throw Invalid_State if either of the two data members is not set
*/
virtual void affirm_init() const;
protected:
void X509_load_hook();
virtual void set_all_values(ECDSA_PublicKey const& other);
ECDSA_Core m_ecdsa_core;
};
/**
* This class represents ECDSA Private Keys
*/
class ECDSA_PrivateKey : public ECDSA_PublicKey,
public EC_PrivateKey,
public PK_Signing_Key
{
public:
//ctors
/**
* Default constructor. Use this one if you want to later fill this object with data
* from an encoded key.
*/
ECDSA_PrivateKey()
{}
/**
* Generate a new private key
* @param the domain parameters to used for this key
*/
ECDSA_PrivateKey(RandomNumberGenerator& rng,
const EC_Domain_Params& domain);
ECDSA_PrivateKey(ECDSA_PrivateKey const& other);
ECDSA_PrivateKey const& operator= (ECDSA_PrivateKey const& rhs);
/**
* 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;
/**
* Make sure that the public key parts of this object are set
* (calls EC_PublicKey::affirm_init()) as well as the private key
* value.
* @throw Invalid_State if the above conditions are not satisfied
*/
virtual void affirm_init() const;
protected:
virtual void set_all_values ( ECDSA_PrivateKey const& other );
private:
void PKCS8_load_hook(bool = false);
};
}
#endif
|
