if_algo.h

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/*
* IF Scheme
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
 
#ifndef BOTAN_IF_ALGO_H__
#define BOTAN_IF_ALGO_H__
 
#include <botan/bigint.h>
#include <botan/x509_key.h>
#include <botan/pkcs8.h>
 
namespace Botan {
 
/**
* This class represents public keys
* of integer factorization based (IF) public key schemes.
*/
class BOTAN_DLL IF_Scheme_PublicKey : public virtual Public_Key
   {
   public:
      IF_Scheme_PublicKey(const AlgorithmIdentifier& alg_id,
                          const MemoryRegion<byte>& key_bits);
 
      IF_Scheme_PublicKey(const BigInt& n, const BigInt& e) :
         n(n), e(e) {}
 
      bool check_key(RandomNumberGenerator& rng, bool) const;
 
      AlgorithmIdentifier algorithm_identifier() const;
 
      MemoryVector<byte> x509_subject_public_key() const;
 
      /**
      * @return public modulus
      */
      const BigInt& get_n() const { return n; }
 
      /**
      * @return public exponent
      */
      const BigInt& get_e() const { return e; }
 
      size_t max_input_bits() const { return (n.bits() - 1); }
 
   protected:
      IF_Scheme_PublicKey() {}
 
      BigInt n, e;
   };
 
/**
* This class represents public keys
* of integer factorization based (IF) public key schemes.
*/
class BOTAN_DLL IF_Scheme_PrivateKey : public virtual IF_Scheme_PublicKey,
                                       public virtual Private_Key
   {
   public:
 
      IF_Scheme_PrivateKey(RandomNumberGenerator& rng,
                           const BigInt& prime1, const BigInt& prime2,
                           const BigInt& exp, const BigInt& d_exp,
                           const BigInt& mod);
 
      IF_Scheme_PrivateKey(RandomNumberGenerator& rng,
                           const AlgorithmIdentifier& alg_id,
                           const MemoryRegion<byte>& key_bits);
 
      bool check_key(RandomNumberGenerator& rng, bool) const;
 
      /**
      * Get the first prime p.
      * @return prime p
      */
      const BigInt& get_p() const { return p; }
 
      /**
      * Get the second prime q.
      * @return prime q
      */
      const BigInt& get_q() const { return q; }
 
      /**
      * Get d with exp * d = 1 mod (p - 1, q - 1).
      * @return d
      */
      const BigInt& get_d() const { return d; }
 
      const BigInt& get_c() const { return c; }
      const BigInt& get_d1() const { return d1; }
      const BigInt& get_d2() const { return d2; }
 
      MemoryVector<byte> pkcs8_private_key() const;
 
   protected:
      IF_Scheme_PrivateKey() {}
 
      BigInt d, p, q, d1, d2, c;
   };
 
}
 
#endif