xtrcrypt.h
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#ifndef CRYPTOPP_XTRCRYPT_H
#define CRYPTOPP_XTRCRYPT_H
/** \file
"The XTR public key system" by Arjen K. Lenstra and Eric R. Verheul
*/
#include "cryptlib.h"
#include "xtr.h"
#include "integer.h"
NAMESPACE_BEGIN(CryptoPP)
//! XTR-DH with key validation
class XTR_DH : public SimpleKeyAgreementDomain, public CryptoParameters
{
typedef XTR_DH ThisClass;
public:
XTR_DH(const Integer &p, const Integer &q, const GFP2Element &g);
XTR_DH(RandomNumberGenerator &rng, unsigned int pbits, unsigned int qbits);
XTR_DH(BufferedTransformation &domainParams);
void DEREncode(BufferedTransformation &domainParams) const;
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);
CryptoParameters & AccessCryptoParameters() {return *this;}
unsigned int AgreedValueLength() const {return 2*m_p.ByteCount();}
unsigned int PrivateKeyLength() const {return m_q.ByteCount();}
unsigned int PublicKeyLength() const {return 2*m_p.ByteCount();}
void GeneratePrivateKey(RandomNumberGenerator &rng, byte *privateKey) const;
void GeneratePublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const;
bool Agree(byte *agreedValue, const byte *privateKey, const byte *otherPublicKey, bool validateOtherPublicKey=true) const;
const Integer &GetModulus() const {return m_p;}
const Integer &GetSubgroupOrder() const {return m_q;}
const GFP2Element &GetSubgroupGenerator() const {return m_g;}
void SetModulus(const Integer &p) {m_p = p;}
void SetSubgroupOrder(const Integer &q) {m_q = q;}
void SetSubgroupGenerator(const GFP2Element &g) {m_g = g;}
private:
unsigned int ExponentBitLength() const;
Integer m_p, m_q;
GFP2Element m_g;
};
NAMESPACE_END
#endif
cryptlib.h
Abstract base classes that provide a uniform interface to this library.
RandomNumberGenerator
Interface for random number generators.
Definition: cryptlib.h:1186
XTR_DH::AgreedValueLength
unsigned int AgreedValueLength() const
Provides the size of the agreed value.
Definition: xtrcrypt.h:31
BufferedTransformation
Interface for buffered transformations.
Definition: cryptlib.h:1352
SimpleKeyAgreementDomain
Interface for domains of simple key agreement protocols.
Definition: cryptlib.h:2682
GFP2Element
an element of GF(p^2)
Definition: xtr.h:17
XTR_DH
XTR-DH with key validation.
Definition: xtrcrypt.h:16
XTR_DH::AccessCryptoParameters
CryptoParameters & AccessCryptoParameters()
Retrieves a reference to Crypto Parameters.
Definition: xtrcrypt.h:30
xtr.h
The XTR public key system.
Integer
Multiple precision integer with arithmetic operations.
Definition: integer.h:45
XTR_DH::PublicKeyLength
unsigned int PublicKeyLength() const
Provides the size of the public key.
Definition: xtrcrypt.h:33
XTR_DH::PrivateKeyLength
unsigned int PrivateKeyLength() const
Provides the size of the private key.
Definition: xtrcrypt.h:32
integer.h
Multiple precision integer with arithmetic operations.
CryptoParameters
Interface for crypto prameters.
Definition: cryptlib.h:2196
CryptoPP
Crypto++ library namespace.
NameValuePairs
Interface for retrieving values given their names.
Definition: cryptlib.h:277