You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1.8 KiB
55 lines
1.8 KiB
![]()
4 years ago
|
#ifndef CRYPTOPP_XTRCRYPT_H
|
||
|
#define CRYPTOPP_XTRCRYPT_H
|
||
|
|
||
|
/** \file
|
||
|
"The XTR public key system" by Arjen K. Lenstra and Eric R. Verheul
|
||
|
*/
|
||
|
|
||
|
#include "xtr.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
|