2 rsa.c -- RSA key handling
3 Copyright (C) 2007 Guus Sliepen <guus@tinc-vpn.org>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <openssl/pem.h>
25 #include <openssl/err.h>
32 bool rsa_set_hex_public_key(rsa_t *rsa, char *n, char *e) {
34 BN_hex2bn(&(*rsa)->n, n);
35 BN_hex2bn(&(*rsa)->e, e);
39 bool rsa_set_hex_private_key(rsa_t *rsa, char *n, char *e, char *d) {
41 BN_hex2bn(&(*rsa)->n, n);
42 BN_hex2bn(&(*rsa)->e, e);
43 BN_hex2bn(&(*rsa)->d, d);
49 bool rsa_read_pem_public_key(rsa_t *rsa, FILE *fp) {
50 *rsa = PEM_read_RSAPublicKey(fp, rsa, NULL, NULL);
55 *rsa = PEM_read_RSA_PUBKEY(fp, rsa, NULL, NULL);
60 logger(LOG_ERR, _("Unable to read RSA public key: %s"), ERR_error_string(ERR_get_error(), NULL));
64 bool rsa_read_pem_private_key(rsa_t *rsa, FILE *fp) {
65 *rsa = PEM_read_RSAPrivateKey(fp, NULL, NULL, NULL);
70 logger(LOG_ERR, _("Unable to read RSA private key: %s"), ERR_error_string(ERR_get_error(), NULL));
74 size_t rsa_size(rsa_t *rsa) {
75 return RSA_size(*rsa);
78 bool rsa_public_encrypt(rsa_t *rsa, void *in, size_t len, void *out) {
79 if(RSA_public_encrypt(len, in, out, *rsa, RSA_NO_PADDING) == len)
82 logger(LOG_ERR, _("Unable to perform RSA encryption: %s"), ERR_error_string(ERR_get_error(), NULL));
86 bool rsa_private_decrypt(rsa_t *rsa, void *in, size_t len, void *out) {
87 if(RSA_private_decrypt(len, in, out, *rsa, RSA_NO_PADDING) == len)
90 logger(LOG_ERR, _("Unable to perform RSA decryption: %s"), ERR_error_string(ERR_get_error(), NULL));