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paillier_manage_keys.c
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/**
* @file paillier_manage_keys.c
*
* @date Created on: Sep 06, 2012
* @author Camille Vuillaume
* @copyright Camille Vuillaume, 2012
*
* This file is part of Paillier-GMP.
*
* Paillier-GMP 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.
*
*
* Paillier-GMP 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 Paillier-GMP. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "paillier.h"
#include "tools.h"
void paillier_public_init(paillier_public_key *pub) {
mpz_init(pub->n);
mpz_init(pub->n2);
}
void paillier_private_init(paillier_private_key *priv) {
mpz_init(priv->lambda);
mpz_init(priv->mu);
mpz_init(priv->p2);
mpz_init(priv->q2);
mpz_init(priv->p2invq2);
mpz_init(priv->ninv);
mpz_init(priv->n);
}
void paillier_public_clear(paillier_public_key *pub) {
mpz_clear(pub->n);
}
void paillier_private_clear(paillier_private_key *priv) {
mpz_clear(priv->lambda);
mpz_clear(priv->mu);
mpz_clear(priv->p2);
mpz_clear(priv->q2);
mpz_clear(priv->p2invq2);
mpz_clear(priv->ninv);
mpz_clear(priv->n);
}
int paillier_public_out_str(FILE *fp, paillier_public_key *pub) {
int printf_ret, result = 0;
printf_ret = gmp_fprintf(fp, "%d\n", pub->len);
if(printf_ret < 0) return printf_ret;
result += printf_ret;
debug_msg("output modulus n\n");
printf_ret = gmp_fprintf(fp, "%Zx\n", pub->n);
if(printf_ret < 0) return printf_ret;
result += printf_ret;
return result;
}
int paillier_private_out_str(FILE *fp, paillier_private_key *priv) {
int printf_ret, result = 0;
printf_ret = gmp_fprintf(fp, "%d\n", priv->len);
if(printf_ret < 0) return printf_ret;
result += printf_ret;
printf_ret = gmp_fprintf(fp, "%Zx\n", priv->lambda);
if(printf_ret < 0) return printf_ret;
result += printf_ret;
printf_ret = gmp_fprintf(fp, "%Zx\n", priv->mu);
if(printf_ret < 0) return printf_ret;
result += printf_ret;
printf_ret = gmp_fprintf(fp, "%Zx\n", priv->p2);
if(printf_ret < 0) return printf_ret;
result += printf_ret;
printf_ret = gmp_fprintf(fp, "%Zx\n", priv->q2);
if(printf_ret < 0) return printf_ret;
result += printf_ret;
printf_ret = gmp_fprintf(fp, "%Zx\n", priv->p2invq2);
if(printf_ret < 0) return printf_ret;
result += printf_ret;
printf_ret = gmp_fprintf(fp, "%Zx\n", priv->ninv);
if(printf_ret < 0) return printf_ret;
result += printf_ret;
printf_ret = gmp_fprintf(fp, "%Zx\n", priv->n);
if(printf_ret < 0) return printf_ret;
result += printf_ret;
return result;
}
int paillier_public_in_str(paillier_public_key *pub, FILE *fp) {
int scanf_ret, result = 0;
debug_msg("importing bit length\n");
scanf_ret = gmp_fscanf(fp, "%d\n", &(pub->len));
if(scanf_ret < 0) return scanf_ret;
result += scanf_ret;
debug_msg("importing modulus\n");
scanf_ret = gmp_fscanf(fp, "%Zx\n", pub->n);
if(scanf_ret < 0) return scanf_ret;
result += scanf_ret;
mpz_mul(pub->n2, pub->n, pub->n);
return result;
}
int paillier_private_in_str(paillier_private_key *priv, FILE *fp) {
int scanf_ret, result = 0;
debug_msg("importing bit length\n");
scanf_ret = gmp_fscanf(fp, "%d\n", &(priv->len));
if(scanf_ret < 0) return scanf_ret;
result += scanf_ret;
debug_msg("importing lambda\n");
scanf_ret = gmp_fscanf(fp, "%Zx\n", priv->lambda);
if(scanf_ret < 0) return scanf_ret;
result += scanf_ret;
debug_msg("importing mu\n");
scanf_ret = gmp_fscanf(fp, "%Zx\n", priv->mu);
if(scanf_ret < 0) return scanf_ret;
result += scanf_ret;
debug_msg("importing p^2\n");
scanf_ret = gmp_fscanf(fp, "%Zx\n", priv->p2);
if(scanf_ret < 0) return scanf_ret;
result += scanf_ret;
debug_msg("importing q^2\n");
scanf_ret = gmp_fscanf(fp, "%Zx\n", priv->q2);
if(scanf_ret < 0) return scanf_ret;
result += scanf_ret;
debug_msg("importing p^-2 mod q^2\n");
scanf_ret = gmp_fscanf(fp, "%Zx\n", priv->p2invq2);
if(scanf_ret < 0) return scanf_ret;
result += scanf_ret;
debug_msg("importing n^-1 mod 2^len\n");
scanf_ret = gmp_fscanf(fp, "%Zx\n", priv->ninv);
if(scanf_ret < 0) return scanf_ret;
result += scanf_ret;
debug_msg("importing n\n");
scanf_ret = gmp_fscanf(fp, "%Zx\n", priv->n);
if(scanf_ret < 0) return scanf_ret;
result += scanf_ret;
return result;
}