rw.h
Go to the documentation of this file.
#ifndef CRYPTOPP_RW_H
#define CRYPTOPP_RW_H
/** \file
This file contains classes that implement the
Rabin-Williams signature schemes as defined in IEEE P1363.
*/
#include "pubkey.h"
NAMESPACE_BEGIN(CryptoPP)
//! _
class CRYPTOPP_DLL RWFunction : public TrapdoorFunction, public PublicKey
{
typedef RWFunction ThisClass;
public:
void Initialize(const Integer &n)
{m_n = n;}
void BERDecode(BufferedTransformation &bt);
void DEREncode(BufferedTransformation &bt) const;
Integer ApplyFunction(const Integer &x) const;
Integer PreimageBound() const {return ++(m_n>>1);}
Integer ImageBound() const {return m_n;}
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);
const Integer& GetModulus() const {return m_n;}
void SetModulus(const Integer &n) {m_n = n;}
protected:
Integer m_n;
};
//! _
class CRYPTOPP_DLL InvertibleRWFunction : public RWFunction, public TrapdoorFunctionInverse, public PrivateKey
{
typedef InvertibleRWFunction ThisClass;
public:
void Initialize(const Integer &n, const Integer &p, const Integer &q, const Integer &u)
{m_n = n; m_p = p; m_q = q; m_u = u;}
// generate a random private key
void Initialize(RandomNumberGenerator &rng, unsigned int modulusBits)
{GenerateRandomWithKeySize(rng, modulusBits);}
void BERDecode(BufferedTransformation &bt);
void DEREncode(BufferedTransformation &bt) const;
Integer CalculateInverse(RandomNumberGenerator &rng, const Integer &x) const;
// GeneratibleCryptoMaterial
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);
/*! parameters: (ModulusSize) */
void GenerateRandom(RandomNumberGenerator &rng, const NameValuePairs &alg);
const Integer& GetPrime1() const {return m_p;}
const Integer& GetPrime2() const {return m_q;}
const Integer& GetMultiplicativeInverseOfPrime2ModPrime1() const {return m_u;}
void SetPrime1(const Integer &p) {m_p = p;}
void SetPrime2(const Integer &q) {m_q = q;}
void SetMultiplicativeInverseOfPrime2ModPrime1(const Integer &u) {m_u = u;}
protected:
Integer m_p, m_q, m_u;
};
//! RW
struct RW
{
static std::string StaticAlgorithmName() {return "RW";}
typedef RWFunction PublicKey;
typedef InvertibleRWFunction PrivateKey;
};
//! RWSS
template <class STANDARD, class H>
struct RWSS : public TF_SS<STANDARD, H, RW>
{
};
NAMESPACE_END
#endif
CryptoMaterial::AssignFrom
virtual void AssignFrom(const NameValuePairs &source)=0
assign values from source to this object
InvertibleRWFunction
_
Definition: rw.h:41
pubkey.h
This file contains helper classes/functions for implementing public key algorithms.
RandomNumberGenerator
interface for random number generators
Definition: cryptlib.h:668
BufferedTransformation
interface for buffered transformations
Definition: cryptlib.h:770
PrivateKey
interface for private keys
Definition: cryptlib.h:1121
TrapdoorFunctionInverse
_
Definition: pubkey.h:89
RWFunction
_
Definition: rw.h:14
CryptoMaterial::Validate
virtual bool Validate(RandomNumberGenerator &rng, unsigned int level) const =0
check this object for errors
Integer
multiple precision integer and basic arithmetics
Definition: integer.h:26
NameValuePairs::GetVoidValue
virtual bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const =0
to be implemented by derived classes, users should use one of the above functions instead ...
TrapdoorFunction
_
Definition: pubkey.h:68
RWSS
RWSS.
Definition: rw.h:86
GeneratableCryptoMaterial::GenerateRandom
virtual void GenerateRandom(RandomNumberGenerator &rng, const NameValuePairs &params=g_nullNameValuePairs)
generate a random key or crypto parameters
Definition: cryptlib.h:1106
GeneratableCryptoMaterial::GenerateRandomWithKeySize
void GenerateRandomWithKeySize(RandomNumberGenerator &rng, unsigned int keySize)
calls the above function with a NameValuePairs object that just specifies "KeySize" ...
PublicKey
interface for public keys
Definition: cryptlib.h:1115
RW
RW.
Definition: rw.h:77
NameValuePairs
interface for retrieving values given their names
Definition: cryptlib.h:224
TF_SS
Trapdoor Function Based Signature Scheme.
Definition: pubkey.h:1625