1#ifndef CRYPTOPP_RSA_H 2#define CRYPTOPP_RSA_H 3 4/** \file 5 This file contains classes that implement the RSA 6 ciphers and signature schemes as defined in PKCS #1 v2.0. 7*/ 8 9#include "pubkey.h" 10#include "asn.h" 11#include "pkcspad.h" 12#include "oaep.h" 13#include "emsa2.h" 14 15NAMESPACE_BEGIN(CryptoPP) 16 17//! _ 18class CRYPTOPP_DLL RSAFunction : public TrapdoorFunction, public X509PublicKey 19{ 20 typedef RSAFunction ThisClass; 21 22public: 23 void Initialize(const Integer &n, const Integer &e) 24 {m_n = n; m_e = e;} 25 26 // X509PublicKey 27 OID GetAlgorithmID() const; 28 void BERDecodePublicKey(BufferedTransformation &bt, bool parametersPresent, size_t size); 29 void DEREncodePublicKey(BufferedTransformation &bt) const; 30 31 // CryptoMaterial 32 bool Validate(RandomNumberGenerator &rng, unsigned int level) const; 33 bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const; 34 void AssignFrom(const NameValuePairs &source); 35 36 // TrapdoorFunction 37 Integer ApplyFunction(const Integer &x) const; 38 Integer PreimageBound() const {return m_n;} 39 Integer ImageBound() const {return m_n;} 40 41 // non-derived 42 const Integer & GetModulus() const {return m_n;} 43 const Integer & GetPublicExponent() const {return m_e;} 44 45 void SetModulus(const Integer &n) {m_n = n;} 46 void SetPublicExponent(const Integer &e) {m_e = e;} 47 48protected: 49 Integer m_n, m_e; 50}; 51 52//! _ 53class CRYPTOPP_DLL InvertibleRSAFunction : public RSAFunction, public TrapdoorFunctionInverse, public PKCS8PrivateKey 54{ 55 typedef InvertibleRSAFunction ThisClass; 56 57public: 58 void Initialize(RandomNumberGenerator &rng, unsigned int modulusBits, const Integer &e = 17); 59 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) 60 {m_n = n; m_e = e; m_d = d; m_p = p; m_q = q; m_dp = dp; m_dq = dq; m_u = u;} 61 //! factor n given private exponent 62 void Initialize(const Integer &n, const Integer &e, const Integer &d); 63 64 // PKCS8PrivateKey 65 void BERDecode(BufferedTransformation &bt) 66 {PKCS8PrivateKey::BERDecode(bt);} 67 void DEREncode(BufferedTransformation &bt) const 68 {PKCS8PrivateKey::DEREncode(bt);} 69 void Load(BufferedTransformation &bt) 70 {PKCS8PrivateKey::BERDecode(bt);} 71 void Save(BufferedTransformation &bt) const 72 {PKCS8PrivateKey::DEREncode(bt);} 73 OID GetAlgorithmID() const {return RSAFunction::GetAlgorithmID();} 74 void BERDecodePrivateKey(BufferedTransformation &bt, bool parametersPresent, size_t size); 75 void DEREncodePrivateKey(BufferedTransformation &bt) const; 76 77 // TrapdoorFunctionInverse 78 Integer CalculateInverse(RandomNumberGenerator &rng, const Integer &x) const; 79 80 // GeneratableCryptoMaterial 81 bool Validate(RandomNumberGenerator &rng, unsigned int level) const; 82 /*! parameters: (ModulusSize, PublicExponent (default 17)) */ 83 void GenerateRandom(RandomNumberGenerator &rng, const NameValuePairs &alg); 84 bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const; 85 void AssignFrom(const NameValuePairs &source); 86 87 // non-derived interface 88 const Integer& GetPrime1() const {return m_p;} 89 const Integer& GetPrime2() const {return m_q;} 90 const Integer& GetPrivateExponent() const {return m_d;} 91 const Integer& GetModPrime1PrivateExponent() const {return m_dp;} 92 const Integer& GetModPrime2PrivateExponent() const {return m_dq;} 93 const Integer& GetMultiplicativeInverseOfPrime2ModPrime1() const {return m_u;} 94 95 void SetPrime1(const Integer &p) {m_p = p;} 96 void SetPrime2(const Integer &q) {m_q = q;} 97 void SetPrivateExponent(const Integer &d) {m_d = d;} 98 void SetModPrime1PrivateExponent(const Integer &dp) {m_dp = dp;} 99 void SetModPrime2PrivateExponent(const Integer &dq) {m_dq = dq;} 100 void SetMultiplicativeInverseOfPrime2ModPrime1(const Integer &u) {m_u = u;} 101 102protected: 103 Integer m_d, m_p, m_q, m_dp, m_dq, m_u; 104}; 105 106class CRYPTOPP_DLL RSAFunction_ISO : public RSAFunction 107{ 108public: 109 Integer ApplyFunction(const Integer &x) const; 110 Integer PreimageBound() const {return ++(m_n>>1);} 111}; 112 113class CRYPTOPP_DLL InvertibleRSAFunction_ISO : public InvertibleRSAFunction 114{ 115public: 116 Integer CalculateInverse(RandomNumberGenerator &rng, const Integer &x) const; 117 Integer PreimageBound() const {return ++(m_n>>1);} 118}; 119 120//! RSA 121struct CRYPTOPP_DLL RSA 122{ 123 static const char * CRYPTOPP_API StaticAlgorithmName() {return "RSA";} 124 typedef RSAFunction PublicKey; 125 typedef InvertibleRSAFunction PrivateKey; 126}; 127 128//! <a href="http://www.weidai.com/scan-mirror/ca.html#RSA">RSA cryptosystem</a> 129template <class STANDARD> 130struct RSAES : public TF_ES<STANDARD, RSA> 131{ 132}; 133 134//! <a href="http://www.weidai.com/scan-mirror/sig.html#RSA">RSA signature scheme with appendix</a> 135/*! See documentation of PKCS1v15 for a list of hash functions that can be used with it. */ 136template <class STANDARD, class H> 137struct RSASS : public TF_SS<STANDARD, H, RSA> 138{ 139}; 140 141struct CRYPTOPP_DLL RSA_ISO 142{ 143 static const char * CRYPTOPP_API StaticAlgorithmName() {return "RSA-ISO";} 144 typedef RSAFunction_ISO PublicKey; 145 typedef InvertibleRSAFunction_ISO PrivateKey; 146}; 147 148template <class H> 149struct RSASS_ISO : public TF_SS<P1363_EMSA2, H, RSA_ISO> 150{ 151}; 152 153// The two RSA encryption schemes defined in PKCS #1 v2.0 154typedef RSAES<PKCS1v15>::Decryptor RSAES_PKCS1v15_Decryptor; 155typedef RSAES<PKCS1v15>::Encryptor RSAES_PKCS1v15_Encryptor; 156 157typedef RSAES<OAEP<SHA> >::Decryptor RSAES_OAEP_SHA_Decryptor; 158typedef RSAES<OAEP<SHA> >::Encryptor RSAES_OAEP_SHA_Encryptor; 159 160// The three RSA signature schemes defined in PKCS #1 v2.0 161typedef RSASS<PKCS1v15, SHA>::Signer RSASSA_PKCS1v15_SHA_Signer; 162typedef RSASS<PKCS1v15, SHA>::Verifier RSASSA_PKCS1v15_SHA_Verifier; 163 164namespace Weak { 165typedef RSASS<PKCS1v15, Weak1::MD2>::Signer RSASSA_PKCS1v15_MD2_Signer; 166typedef RSASS<PKCS1v15, Weak1::MD2>::Verifier RSASSA_PKCS1v15_MD2_Verifier; 167 168typedef RSASS<PKCS1v15, Weak1::MD5>::Signer RSASSA_PKCS1v15_MD5_Signer; 169typedef RSASS<PKCS1v15, Weak1::MD5>::Verifier RSASSA_PKCS1v15_MD5_Verifier; 170} 171 172NAMESPACE_END 173 174#endif 175