2 rsa.c -- RSA key handling
3 Copyright (C) 2007-2012 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 along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include <openssl/pem.h>
23 #include <openssl/err.h>
30 bool rsa_set_hex_public_key(rsa_t *rsa, char *n, char *e) {
32 if(BN_hex2bn(&(*rsa)->n, n) != strlen(n))
34 if(BN_hex2bn(&(*rsa)->e, e) != strlen(e))
39 bool rsa_set_hex_private_key(rsa_t *rsa, char *n, char *e, char *d) {
41 if(BN_hex2bn(&(*rsa)->n, n) != strlen(n))
43 if(BN_hex2bn(&(*rsa)->e, e) != strlen(e))
45 if(BN_hex2bn(&(*rsa)->d, d) != strlen(d))
52 bool rsa_read_pem_public_key(rsa_t *rsa, FILE *fp) {
53 *rsa = PEM_read_RSAPublicKey(fp, rsa, NULL, NULL);
58 *rsa = PEM_read_RSA_PUBKEY(fp, rsa, NULL, NULL);
63 logger(DEBUG_ALWAYS, LOG_ERR, "Unable to read RSA public key: %s", ERR_error_string(ERR_get_error(), NULL));
67 bool rsa_read_pem_private_key(rsa_t *rsa, FILE *fp) {
68 *rsa = PEM_read_RSAPrivateKey(fp, NULL, NULL, NULL);
73 logger(DEBUG_ALWAYS, LOG_ERR, "Unable to read RSA private key: %s", ERR_error_string(ERR_get_error(), NULL));
77 size_t rsa_size(rsa_t *rsa) {
78 return RSA_size(*rsa);
81 bool rsa_public_encrypt(rsa_t *rsa, void *in, size_t len, void *out) {
82 if(RSA_public_encrypt(len, in, out, *rsa, RSA_NO_PADDING) == len)
85 logger(DEBUG_ALWAYS, LOG_ERR, "Unable to perform RSA encryption: %s", ERR_error_string(ERR_get_error(), NULL));
89 bool rsa_private_decrypt(rsa_t *rsa, void *in, size_t len, void *out) {
90 if(RSA_private_decrypt(len, in, out, *rsa, RSA_NO_PADDING) == len)
93 logger(DEBUG_ALWAYS, LOG_ERR, "Unable to perform RSA decryption: %s", ERR_error_string(ERR_get_error(), NULL));
97 bool rsa_active(rsa_t *rsa) {
101 void rsa_free(rsa_t *rsa) {