mecsctx.h

Go to the documentation of this file.

/*
This file is part of BitPunch
Copyright (C) 2015 Frantisek Uhrecky <frantisek.uhrecky[what here]gmail.com>
Copyright (C) 2015 Andrej Gulyas <andrej.guly[what here]gmail.com>

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 MECSCTX_H
#define MECSCTX_H

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

typedef enum _BPU_T_EN_Mecs_Types {
    BPU_EN_MECS_BASIC_GOPPA = 1, 
#ifdef BPU_CONF_MECS_CCA2_POINTCHEVAL_GOPPA
        BPU_EN_MECS_CCA2_POINTCHEVAL_GOPPA, 
#endif
        BPU_EN_MECS_BASIC_QCMDPC, 
#ifdef BPU_CONF_MECS_CCA2_POINTCHEVAL_QCMDPC
        BPU_EN_MECS_CCA2_POINTCHEVAL_QCMDPC, 
#endif
}BPU_T_EN_Mecs_Types;

typedef struct _BPU_T_Mecs_Ctx {
        BPU_T_EN_Mecs_Types type;
        int (* _encrypt)(BPU_T_GF2_Vector *out, const BPU_T_GF2_Vector *in, const struct _BPU_T_Mecs_Ctx *ctx);
        int (* _decrypt)(BPU_T_GF2_Vector *out, const BPU_T_GF2_Vector *in, const struct _BPU_T_Mecs_Ctx *ctx);
        int (* _genKeyPair)(struct _BPU_T_Code_Ctx *ctx);

        BPU_T_Code_Ctx *code_ctx;
        uint16_t pt_len; 
        uint16_t ct_len; 
}BPU_T_Mecs_Ctx;

typedef union _BPU_T_UN_Code_Params BPU_T_UN_Mecs_Params;

int BPU_mecsInitCtx(BPU_T_Mecs_Ctx **ctx, const BPU_T_UN_Mecs_Params *params, const BPU_T_EN_Mecs_Types type);

int BPU_mecsFreeCtx(BPU_T_Mecs_Ctx **ctx);

// Available init params for all codes, it is only wrapper for code params init
int BPU_mecsInitParamsGoppa(BPU_T_UN_Mecs_Params *params, const uint16_t m, const uint16_t t, const BPU_T_GF2_16x mod);

void BPU_mecsFreeParamsGoppa(BPU_T_UN_Mecs_Params *params);

int BPU_mecsInitParamsQcmdpc(BPU_T_UN_Mecs_Params *params, const uint16_t m, const uint16_t n0, const uint16_t w, const uint16_t t);

void BPU_mecsFreeParamsQcmdpc(BPU_T_UN_Mecs_Params *params);

// add yours additional params if needed

#endif // MECSCTX_H