goppa.h

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/*
This file is part of BitPunch
Copyright (C) 2013-2015 Frantisek Uhrecky <frantisek.uhrecky[what here]gmail.com>
Copyright (C) 2013-2014 Andrej Gulyas <andrej.guly[what here]gmail.com>
Copyright (C) 2013-2014 Marek Klein  <kleinmrk[what here]gmail.com>
Copyright (C) 2013-2014 Filip Machovec  <filipmachovec[what here]yahoo.com>
Copyright (C) 2013-2014 Jozef Kudlac <jozef[what here]kudlac.sk>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef BPU_GOPPA_H
#define BPU_GOPPA_H

#include <bitpunch/config.h>

#include <bitpunch/code/codectx.h>
#include <bitpunch/math/gf2.h>
#include <bitpunch/math/gf2x.h>

#ifdef BPU_CONF_ENCRYPTION

int BPU_goppaEncode(BPU_T_GF2_Vector *out, const BPU_T_GF2_Vector *in, const struct _BPU_T_Code_Ctx *ctx);
#endif

#ifdef BPU_CONF_DECRYPTION

int BPU_goppaDecode(BPU_T_GF2_Vector *out, const BPU_T_GF2_Vector *in, const struct _BPU_T_Code_Ctx *ctx);

int BPU_goppaGetError(BPU_T_GF2_Vector *error, const BPU_T_GF2_Vector *encoded, const BPU_T_Code_Ctx *ctx);

void BPU_goppaFindPolyAB(BPU_T_GF2_16x_Poly *a, BPU_T_GF2_16x_Poly *b, const BPU_T_GF2_16x_Poly *tau, const BPU_T_GF2_16x_Poly *mod, const BPU_T_Math_Ctx *math_ctx);

void BPU_goppaDetSyndrome(BPU_T_GF2_16x_Poly *syndrome, const BPU_T_GF2_Vector *z, const BPU_T_Code_Ctx *ctx);
#endif

#ifdef BPU_CONF_KEY_GEN

int BPU_goppaGenCode(BPU_T_Code_Ctx *ctx);

int BPU_goppaInitMatH2(BPU_T_GF2_Matrix *h2, BPU_T_GF2_16x_Matrix *hx, const BPU_T_Code_Ctx *ctx);
#endif

#endif // BPU_GOPPA_H