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/*************************************************
* Diffie-Hellman Header File *
* (C) 1999-2006 The Botan Project *
*************************************************/
#ifndef BOTAN_DIFFIE_HELLMAN_H__
#define BOTAN_DIFFIE_HELLMAN_H__
#include <botan/dl_algo.h>
#include <botan/pk_core.h>
namespace Botan {
/*************************************************
* Diffie-Hellman Public Key *
*************************************************/
class DH_PublicKey : public virtual DL_Scheme_PublicKey
{
public:
MemoryVector<byte> public_value() const;
DH_PublicKey(const DL_Group&, const BigInt&);
protected:
std::string algo_name() const { return "DH"; }
DH_PublicKey() {}
private:
friend X509_PublicKey* get_public_key(const std::string&);
DL_Group::Format group_format() const { return DL_Group::ANSI_X9_42; }
void X509_load_hook();
};
/*************************************************
* Diffie-Hellman Private Key *
*************************************************/
class DH_PrivateKey : public DH_PublicKey,
public PK_Key_Agreement_Key,
public virtual DL_Scheme_PrivateKey
{
public:
SecureVector<byte> derive_key(const byte[], u32bit) const;
SecureVector<byte> derive_key(const DH_PublicKey&) const;
SecureVector<byte> derive_key(const BigInt&) const;
MemoryVector<byte> public_value() const;
DH_PrivateKey(const DL_Group&);
DH_PrivateKey(const DL_Group&, const BigInt&, const BigInt& = 0);
private:
friend PKCS8_PrivateKey* get_private_key(const std::string&);
void PKCS8_load_hook();
DH_PrivateKey() {}
DH_Core core;
};
}
#endif
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