107 lines
4.3 KiB
C++
107 lines
4.3 KiB
C++
|
|
/***************************************************************************
|
|
*
|
|
Copyright 2013 CertiVox UK Ltd. *
|
|
*
|
|
This file is part of CertiVox MIRACL Crypto SDK. *
|
|
*
|
|
The CertiVox MIRACL Crypto SDK provides developers with an *
|
|
extensive and efficient set of cryptographic functions. *
|
|
For further information about its features and functionalities please *
|
|
refer to http://www.certivox.com *
|
|
*
|
|
* The CertiVox MIRACL Crypto SDK is free software: you can *
|
|
redistribute it and/or modify it under the terms of the *
|
|
GNU Affero General Public License as published by the *
|
|
Free Software Foundation, either version 3 of the License, *
|
|
or (at your option) any later version. *
|
|
*
|
|
* The CertiVox MIRACL Crypto SDK is distributed in the hope *
|
|
that it will be useful, but WITHOUT ANY WARRANTY; without even the *
|
|
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
|
|
See the GNU Affero General Public License for more details. *
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public *
|
|
License along with CertiVox MIRACL Crypto SDK. *
|
|
If not, see <http://www.gnu.org/licenses/>. *
|
|
*
|
|
You can be released from the requirements of the license by purchasing *
|
|
a commercial license. Buying such a license is mandatory as soon as you *
|
|
develop commercial activities involving the CertiVox MIRACL Crypto SDK *
|
|
without disclosing the source code of your own applications, or shipping *
|
|
the CertiVox MIRACL Crypto SDK with a closed source product. *
|
|
*
|
|
***************************************************************************/
|
|
/*
|
|
* MIRACL C++ Header file ecn8.h
|
|
*
|
|
* AUTHOR : M. Scott
|
|
*
|
|
* PURPOSE : Definition of class ECn8 (Arithmetic on an Elliptic Curve,
|
|
* mod n^8)
|
|
*
|
|
* NOTE : Must be used in conjunction with zzn.cpp, big.cpp and
|
|
* zzn2.cpp, zzn4.cpp and zzn8.cpp
|
|
*
|
|
* WARNING: This class has been cobbled together for a specific use with
|
|
* the MIRACL library. It is not complete, and may not work in other
|
|
* applications
|
|
*
|
|
*/
|
|
|
|
#ifndef ECN8_H
|
|
#define ECN8_H
|
|
|
|
#include "zzn8.h"
|
|
|
|
// Affine Only
|
|
|
|
class ECn8
|
|
{
|
|
ZZn8 x,y;
|
|
int marker;
|
|
public:
|
|
ECn8() {marker=MR_EPOINT_INFINITY;}
|
|
ECn8(const ECn8& b) {x=b.x; y=b.y; marker=b.marker; }
|
|
|
|
ECn8& operator=(const ECn8& b)
|
|
{x=b.x; y=b.y; marker=b.marker; return *this; }
|
|
|
|
BOOL add(const ECn8&,ZZn8&);
|
|
|
|
ECn8& operator+=(const ECn8&);
|
|
ECn8& operator-=(const ECn8&);
|
|
ECn8& operator*=(const Big&);
|
|
|
|
void clear() {x=y=0; marker=MR_EPOINT_INFINITY;}
|
|
BOOL iszero() const;
|
|
|
|
void get(ZZn8&,ZZn8&) const;
|
|
void get(ZZn8&) const;
|
|
|
|
BOOL set(const ZZn8&,const ZZn8&); // set on the curve - returns FALSE if no such point
|
|
BOOL set(const ZZn8&); // sets x coordinate on curve, and finds y coordinate
|
|
|
|
friend ECn8 operator-(const ECn8&);
|
|
friend ECn8 operator+(const ECn8&,const ECn8&);
|
|
friend ECn8 operator-(const ECn8&,const ECn8&);
|
|
|
|
friend ECn8 mul(int,ECn8*,const Big*);
|
|
|
|
friend BOOL operator==(const ECn8& a,const ECn8 &b)
|
|
{return (a.x==b.x && a.y==b.y && a.marker==b.marker); }
|
|
friend BOOL operator!=(const ECn8& a,const ECn8 &b)
|
|
{return (a.x!=b.x || a.y!=b.y || a.marker!=b.marker); }
|
|
|
|
friend ECn8 operator*(const Big &,const ECn8&);
|
|
|
|
#ifndef MR_NO_STANDARD_IO
|
|
friend ostream& operator<<(ostream&,const ECn8&);
|
|
#endif
|
|
|
|
~ECn8() {}
|
|
};
|
|
|
|
#endif
|
|
|