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ECCK.h
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/*
* Copyright 2012 Xinxin Fan <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __ECCK_H__
#define __ECCK_H__
/**
* Koblitz curve sect233k1: y^2 + xy = x^3 + x^2 + 1
* Finite Field: GF(2^163) = F_2[x]/(x^163 + x^7 + x^6 + x^3 + 1)
*
* Koblitz curve sect233k1: y^2 + xy = x^3 + 1
* Finite Field: GF(2^233) = F_2[x]/(x^233 + x^74 + 1)
*/
/**
* Point compression
*/
void point_compression(ec_point_aff *P, uint32 *Pc, uint32 curve_id);
/**
* Point decompression
*/
uint32 point_decompression(uint32 *Pc, ec_point_aff *P, uint32 curve_id);
/**
* Point negation
*/
void point_negation(ec_point_aff *P, ec_point_aff *negP, uint32 curve_id);
/**
* Point conversion from project coordinate to affine coordinate
*/
void project_to_affine(ec_point_pro *Qp, ec_point_aff *Qa, uint32 curve_id);
/**
* Point conversion from affine coordinate to projective coordinate
*/
void affine_to_project(ec_point_aff *Qa, ec_point_pro *Qp, uint32 curve_id);
/**
* Point addition
*/
void mixed_addition(ec_point_pro *P, ec_point_aff *Q, ec_point_pro *R, uint32 curve_id);
/**
* Point doubling
*/
void point_doubling(ec_point_pro *P, ec_point_pro *Q, uint32 curve_id);
/**
* Frobenius mapping
*/
void point_frobenius(ec_point_pro *P, uint32 curve_id);
/**
* Partial reduction
*/
void partial_mod(uint32 *k, uint32 *r0, uint32 *r1, uint32 curve_id);
/**
* Width-5 TNAF expansion
*/
void TNAF5_expansion(uint32 *r0, uint32 *r1, signed char *u, uint32 curve_id);
/**
* Scalar multiplication with the width-5 TNAF (fixed point)
*/
void TNAF5_fixed_scalarmul(uint32 *k, ec_point_aff *Q, uint32 curve_id);
/**
* Scalar multiplication with the width-5 TNAF (random point)
*/
void TNAF5_random_scalarmul(uint32 *k, ec_point_aff *P, ec_point_aff *Q, uint32 curve_id);
#endif /* __ECCK_H__ */