summaryrefslogtreecommitdiffstats
path: root/CryptoPP/rsa.h
blob: 6a8b18525e4144412fdc6bf4b4ce49066582c5a1 (plain) (blame)
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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
#ifndef CRYPTOPP_RSA_H
#define CRYPTOPP_RSA_H

/** \file
	This file contains classes that implement the RSA
	ciphers and signature schemes as defined in PKCS #1 v2.0.
*/

#include "pubkey.h"
#include "asn.h"
#include "pkcspad.h"
#include "oaep.h"
#include "emsa2.h"

NAMESPACE_BEGIN(CryptoPP)

//! _
class CRYPTOPP_DLL RSAFunction : public TrapdoorFunction, public X509PublicKey
{
	typedef RSAFunction ThisClass;

public:
	void Initialize(const Integer &n, const Integer &e)
		{m_n = n; m_e = e;}

	// X509PublicKey
	OID GetAlgorithmID() const;
	void BERDecodePublicKey(BufferedTransformation &bt, bool parametersPresent, size_t size);
	void DEREncodePublicKey(BufferedTransformation &bt) const;

	// CryptoMaterial
	bool Validate(RandomNumberGenerator &rng, unsigned int level) const;
	bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const;
	void AssignFrom(const NameValuePairs &source);

	// TrapdoorFunction
	Integer ApplyFunction(const Integer &x) const;
	Integer PreimageBound() const {return m_n;}
	Integer ImageBound() const {return m_n;}

	// non-derived
	const Integer & GetModulus() const {return m_n;}
	const Integer & GetPublicExponent() const {return m_e;}

	void SetModulus(const Integer &n) {m_n = n;}
	void SetPublicExponent(const Integer &e) {m_e = e;}

protected:
	Integer m_n, m_e;
};

//! _
class CRYPTOPP_DLL InvertibleRSAFunction : public RSAFunction, public TrapdoorFunctionInverse, public PKCS8PrivateKey
{
	typedef InvertibleRSAFunction ThisClass;

public:
	void Initialize(RandomNumberGenerator &rng, unsigned int modulusBits, const Integer &e = 17);
	void Initialize(const Integer &n, const Integer &e, const Integer &d, const Integer &p, const Integer &q, const Integer &dp, const Integer &dq, const Integer &u)
		{m_n = n; m_e = e; m_d = d; m_p = p; m_q = q; m_dp = dp; m_dq = dq; m_u = u;}
	//! factor n given private exponent
	void Initialize(const Integer &n, const Integer &e, const Integer &d);

	// PKCS8PrivateKey
	void BERDecode(BufferedTransformation &bt)
		{PKCS8PrivateKey::BERDecode(bt);}
	void DEREncode(BufferedTransformation &bt) const
		{PKCS8PrivateKey::DEREncode(bt);}
	void Load(BufferedTransformation &bt)
		{PKCS8PrivateKey::BERDecode(bt);}
	void Save(BufferedTransformation &bt) const
		{PKCS8PrivateKey::DEREncode(bt);}
	OID GetAlgorithmID() const {return RSAFunction::GetAlgorithmID();}
	void BERDecodePrivateKey(BufferedTransformation &bt, bool parametersPresent, size_t size);
	void DEREncodePrivateKey(BufferedTransformation &bt) const;

	// TrapdoorFunctionInverse
	Integer CalculateInverse(RandomNumberGenerator &rng, const Integer &x) const;

	// GeneratableCryptoMaterial
	bool Validate(RandomNumberGenerator &rng, unsigned int level) const;
	/*! parameters: (ModulusSize, PublicExponent (default 17)) */
	void GenerateRandom(RandomNumberGenerator &rng, const NameValuePairs &alg);
	bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const;
	void AssignFrom(const NameValuePairs &source);

	// non-derived interface
	const Integer& GetPrime1() const {return m_p;}
	const Integer& GetPrime2() const {return m_q;}
	const Integer& GetPrivateExponent() const {return m_d;}
	const Integer& GetModPrime1PrivateExponent() const {return m_dp;}
	const Integer& GetModPrime2PrivateExponent() const {return m_dq;}
	const Integer& GetMultiplicativeInverseOfPrime2ModPrime1() const {return m_u;}

	void SetPrime1(const Integer &p) {m_p = p;}
	void SetPrime2(const Integer &q) {m_q = q;}
	void SetPrivateExponent(const Integer &d) {m_d = d;}
	void SetModPrime1PrivateExponent(const Integer &dp) {m_dp = dp;}
	void SetModPrime2PrivateExponent(const Integer &dq) {m_dq = dq;}
	void SetMultiplicativeInverseOfPrime2ModPrime1(const Integer &u) {m_u = u;}

protected:
	Integer m_d, m_p, m_q, m_dp, m_dq, m_u;
};

class CRYPTOPP_DLL RSAFunction_ISO : public RSAFunction
{
public:
	Integer ApplyFunction(const Integer &x) const;
	Integer PreimageBound() const {return ++(m_n>>1);}
};

class CRYPTOPP_DLL InvertibleRSAFunction_ISO : public InvertibleRSAFunction
{
public:
	Integer CalculateInverse(RandomNumberGenerator &rng, const Integer &x) const;
	Integer PreimageBound() const {return ++(m_n>>1);}
};

//! RSA
struct CRYPTOPP_DLL RSA
{
	static const char * CRYPTOPP_API StaticAlgorithmName() {return "RSA";}
	typedef RSAFunction PublicKey;
	typedef InvertibleRSAFunction PrivateKey;
};

//! <a href="http://www.weidai.com/scan-mirror/ca.html#RSA">RSA cryptosystem</a>
template <class STANDARD>
struct RSAES : public TF_ES<STANDARD, RSA>
{
};

//! <a href="http://www.weidai.com/scan-mirror/sig.html#RSA">RSA signature scheme with appendix</a>
/*! See documentation of PKCS1v15 for a list of hash functions that can be used with it. */
template <class STANDARD, class H>
struct RSASS : public TF_SS<STANDARD, H, RSA>
{
};

struct CRYPTOPP_DLL RSA_ISO
{
	static const char * CRYPTOPP_API StaticAlgorithmName() {return "RSA-ISO";}
	typedef RSAFunction_ISO PublicKey;
	typedef InvertibleRSAFunction_ISO PrivateKey;
};

template <class H>
struct RSASS_ISO : public TF_SS<P1363_EMSA2, H, RSA_ISO>
{
};

// The two RSA encryption schemes defined in PKCS #1 v2.0
typedef RSAES<PKCS1v15>::Decryptor RSAES_PKCS1v15_Decryptor;
typedef RSAES<PKCS1v15>::Encryptor RSAES_PKCS1v15_Encryptor;

typedef RSAES<OAEP<SHA> >::Decryptor RSAES_OAEP_SHA_Decryptor;
typedef RSAES<OAEP<SHA> >::Encryptor RSAES_OAEP_SHA_Encryptor;

// The three RSA signature schemes defined in PKCS #1 v2.0
typedef RSASS<PKCS1v15, SHA>::Signer RSASSA_PKCS1v15_SHA_Signer;
typedef RSASS<PKCS1v15, SHA>::Verifier RSASSA_PKCS1v15_SHA_Verifier;

namespace Weak {
typedef RSASS<PKCS1v15, Weak1::MD2>::Signer RSASSA_PKCS1v15_MD2_Signer;
typedef RSASS<PKCS1v15, Weak1::MD2>::Verifier RSASSA_PKCS1v15_MD2_Verifier;

typedef RSASS<PKCS1v15, Weak1::MD5>::Signer RSASSA_PKCS1v15_MD5_Signer;
typedef RSASS<PKCS1v15, Weak1::MD5>::Verifier RSASSA_PKCS1v15_MD5_Verifier;
}

NAMESPACE_END

#endif