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/*************************************************
* Nyberg-Rueppel Header File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#ifndef BOTAN_NYBERG_RUEPPEL_H__
#define BOTAN_NYBERG_RUEPPEL_H__
#include <botan/dl_algo.h>
#include <botan/pk_core.h>
namespace Botan {
/*************************************************
* Nyberg-Rueppel Public Key *
*************************************************/
class BOTAN_DLL NR_PublicKey : public PK_Verifying_with_MR_Key,
public virtual DL_Scheme_PublicKey
{
public:
std::string algo_name() const { return "NR"; }
SecureVector<byte> verify(const byte[], u32bit) const;
u32bit max_input_bits() const;
DL_Group::Format group_format() const { return DL_Group::ANSI_X9_57; }
u32bit message_parts() const { return 2; }
u32bit message_part_size() const;
NR_PublicKey() {}
NR_PublicKey(const DL_Group&, const BigInt&);
protected:
NR_Core core;
private:
void X509_load_hook();
};
/*************************************************
* Nyberg-Rueppel Private Key *
*************************************************/
class BOTAN_DLL NR_PrivateKey : public NR_PublicKey,
public PK_Signing_Key,
public virtual DL_Scheme_PrivateKey
{
public:
SecureVector<byte> sign(const byte[], u32bit,
RandomNumberGenerator& rng) const;
bool check_key(RandomNumberGenerator& rng, bool) const;
NR_PrivateKey() {}
NR_PrivateKey(RandomNumberGenerator&, const DL_Group&,
const BigInt& = 0);
private:
void PKCS8_load_hook(RandomNumberGenerator&, bool = false);
};
}
#endif
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