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
|
/*
* RSA
* (C) 1999-2008 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_RSA_H__
#define BOTAN_RSA_H__
#include <botan/if_algo.h>
namespace Botan {
/**
* RSA Public Key
*/
class BOTAN_DLL RSA_PublicKey : public PK_Encrypting_Key,
public PK_Verifying_with_MR_Key,
public virtual IF_Scheme_PublicKey
{
public:
std::string algo_name() const { return "RSA"; }
SecureVector<byte> encrypt(const byte[], u32bit,
RandomNumberGenerator& rng) const;
SecureVector<byte> verify(const byte[], u32bit) const;
RSA_PublicKey(const AlgorithmIdentifier& alg_id,
const MemoryRegion<byte>& key_bits) :
IF_Scheme_PublicKey(alg_id, key_bits)
{
core = IF_Core(e, n);
}
/**
* Create a RSA_PublicKey
* @arg n the modulus
* @arg e the exponent
*/
RSA_PublicKey(const BigInt& n, const BigInt& e) :
IF_Scheme_PublicKey(n, e)
{
core = IF_Core(e, n);
}
protected:
RSA_PublicKey() {}
BigInt public_op(const BigInt&) const;
};
/**
* RSA Private Key class.
*/
class BOTAN_DLL RSA_PrivateKey : public RSA_PublicKey,
public PK_Decrypting_Key,
public PK_Signing_Key,
public IF_Scheme_PrivateKey
{
public:
SecureVector<byte> sign(const byte[], u32bit,
RandomNumberGenerator&) const;
SecureVector<byte> decrypt(const byte[], u32bit) const;
bool check_key(RandomNumberGenerator& rng, bool) const;
RSA_PrivateKey(const AlgorithmIdentifier& alg_id,
const MemoryRegion<byte>& key_bits,
RandomNumberGenerator& rng) :
IF_Scheme_PrivateKey(rng, alg_id, key_bits) {}
/**
* Construct a private key from the specified parameters.
* @param rng a random number generator
* @param p the first prime
* @param q the second prime
* @param e the exponent
* @param d if specified, this has to be d with
* exp * d = 1 mod (p - 1, q - 1). Leave it as 0 if you wish to
* the constructor to calculate it.
* @param n if specified, this must be n = p * q. Leave it as 0
* if you wish to the constructor to calculate it.
*/
RSA_PrivateKey(RandomNumberGenerator& rng,
const BigInt& p, const BigInt& q,
const BigInt& e, const BigInt& d = 0,
const BigInt& n = 0) :
IF_Scheme_PrivateKey(rng, p, q, e, d, n) {}
/**
* Create a new private key with the specified bit length
* @param rng the random number generator to use
* @param bits the desired bit length of the private key
* @param exp the public exponent to be used
*/
RSA_PrivateKey(RandomNumberGenerator& rng,
u32bit bits, u32bit exp = 65537);
private:
BigInt private_op(const byte[], u32bit) const;
};
}
#endif
|
