fh_multi_ipe.h

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/*
 * Copyright (c) 2018 XLAB d.o.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef CIFER_FH_MULTI_IPE_H
#define CIFER_FH_MULTI_IPE_H
 
#include "cifer/data/mat.h"
#include "cifer/data/mat_curve.h"
 
typedef struct cfe_fh_multi_ipe {
    size_t sec_level;
    size_t num_clients;
    size_t vec_len;
    mpz_t bound_x;
    mpz_t bound_y;
    mpz_t order;
} cfe_fh_multi_ipe;
 
cfe_error cfe_fh_multi_ipe_init(cfe_fh_multi_ipe *c, size_t sec_level, size_t num_clients,
                                size_t vec_len, mpz_t bound_x, mpz_t bound_y);
 
void cfe_fh_multi_ipe_copy(cfe_fh_multi_ipe *res, cfe_fh_multi_ipe *c);
 
void cfe_fh_multi_ipe_free(cfe_fh_multi_ipe *c);
 
typedef struct cfe_fh_multi_ipe_sec_key {
    cfe_mat *B_hat;
    cfe_mat *B_star_hat;
    size_t num_clients;
} cfe_fh_multi_ipe_sec_key;
 
void cfe_fh_multi_ipe_master_key_init(cfe_fh_multi_ipe_sec_key *sec_key,
                                      cfe_fh_multi_ipe *c);
 
void cfe_fh_multi_ipe_master_key_free(cfe_fh_multi_ipe_sec_key *sec_key);
 
cfe_error cfe_fh_multi_ipe_generate_keys(cfe_fh_multi_ipe_sec_key *sec_key,
                                         FP12_BN254 *pub_key, cfe_fh_multi_ipe *c);
 
void cfe_fh_multi_ipe_fe_key_init(cfe_mat_G2 *fe_key, cfe_fh_multi_ipe *c);
 
 
cfe_error cfe_fh_multi_ipe_derive_fe_key(cfe_mat_G2 *fe_key, cfe_mat *y,
                                         cfe_fh_multi_ipe_sec_key *sec_key,
                                         cfe_fh_multi_ipe *c);
 
void cfe_fh_multi_ipe_ciphertext_init(cfe_vec_G1 *cipher, cfe_fh_multi_ipe *c);
 
 
cfe_error cfe_fh_multi_ipe_encrypt(cfe_vec_G1 *cipher, cfe_vec *x,
                                   cfe_mat *part_sec_key, cfe_fh_multi_ipe *c);
 
cfe_error cfe_fh_multi_ipe_decrypt(mpz_t res, cfe_vec_G1 *ciphers, cfe_mat_G2 *fe_key,
                                   FP12_BN254 *pub_key, cfe_fh_multi_ipe *c);
 
#endif