ecdsa_sig.h

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/*
* ECDSA Signature
* (C) 2007 Falko Strenzke, FlexSecure GmbH
* (C) 2008-2010 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
 
#ifndef BOTAN_ECDSA_SIGNATURE_H__
#define BOTAN_ECDSA_SIGNATURE_H__
 
#include <botan/bigint.h>
#include <botan/der_enc.h>
#include <botan/ber_dec.h>
 
namespace Botan {
 
/**
* Class representing an ECDSA signature
*/
class BOTAN_DLL ECDSA_Signature
   {
   public:
      friend class ECDSA_Signature_Decoder;
 
      ECDSA_Signature() {}
      ECDSA_Signature(const BigInt& r, const BigInt& s) :
         m_r(r), m_s(s) {}
 
      ECDSA_Signature(const MemoryRegion<byte>& ber);
 
      const BigInt& get_r() const { return m_r; }
      const BigInt& get_s() const { return m_s; }
 
      /**
      * return the r||s
      */
      MemoryVector<byte> get_concatenation() const;
 
      MemoryVector<byte> DER_encode() const;
 
      bool operator==(const ECDSA_Signature& other) const
         {
         return (get_r() == other.get_r() && get_s() == other.get_s());
         }
 
   private:
      BigInt m_r;
      BigInt m_s;
   };
 
inline bool operator!=(const ECDSA_Signature& lhs, const ECDSA_Signature& rhs)
   {
   return !(lhs == rhs);
   }
 
ECDSA_Signature decode_concatenation(const MemoryRegion<byte>& concatenation);
 
}
 
#endif