blob: 5f4cb5fa114461fcc55639d3c433786879a5ca89 (
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
|
/*************************************************
* Diffie-Hellman Header File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#ifndef BOTAN_DIFFIE_HELLMAN_H__
#define BOTAN_DIFFIE_HELLMAN_H__
#include <botan/dl_algo.h>
#include <botan/dh_core.h>
namespace Botan {
/**
* This class represents Diffie-Hellman public keys.
*/
class BOTAN_DLL DH_PublicKey : public virtual DL_Scheme_PublicKey
{
public:
std::string algo_name() const { return "DH"; }
MemoryVector<byte> public_value() const;
u32bit max_input_bits() const;
DL_Group::Format group_format() const { return DL_Group::ANSI_X9_42; }
/**
* Construct an uninitialized key. Use this constructor if you wish
* to decode an encoded key into the new instance.
*/
DH_PublicKey() {}
/**
* Construct a public key with the specified parameters.
* @param grp the DL group to use in the key
* @param y the public value y
*/
DH_PublicKey(const DL_Group& grp, const BigInt& y);
private:
void X509_load_hook();
};
/**
* This class represents Diffie-Hellman private keys.
*/
class BOTAN_DLL DH_PrivateKey : public DH_PublicKey,
public PK_Key_Agreement_Key,
public virtual DL_Scheme_PrivateKey
{
public:
SecureVector<byte> derive_key(const byte other[], u32bit length) const;
SecureVector<byte> derive_key(const DH_PublicKey& other) const;
SecureVector<byte> derive_key(const BigInt& other) const;
MemoryVector<byte> public_value() const;
/**
* Construct an uninitialized key. Use this constructor if you wish
* to decode an encoded key into the new instance.
*/
DH_PrivateKey() {}
/**
* Construct a private key with predetermined value.
* @param rng random number generator to use
* @param grp the group to be used in the key
* @param x the key's secret value (or if zero, generate a new key)
*/
DH_PrivateKey(RandomNumberGenerator& rng, const DL_Group& grp,
const BigInt& x = 0);
private:
void PKCS8_load_hook(RandomNumberGenerator& rng, bool = false);
DH_Core core;
};
}
#endif
|
