2 ecdsagen.c -- ECDSA key generation and export
3 Copyright (C) 2011-2013 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.
20 #include "../system.h"
22 #include <openssl/pem.h>
23 #include <openssl/err.h>
24 #include <openssl/obj_mac.h>
26 #define __TINC_ECDSA_INTERNAL__
27 typedef EC_KEY ecdsa_t
;
29 #include "../ecdsagen.h"
31 #include "../xalloc.h"
35 ecdsa_t
*ecdsa_generate(void) {
36 ecdsa_t
*ecdsa
= EC_KEY_new_by_curve_name(NID_secp521r1
);
38 if(!ecdsa
|| !EC_KEY_generate_key(ecdsa
)) {
39 fprintf(stderr
, "Generating EC key failed: %s", ERR_error_string(ERR_get_error(), NULL
));
44 EC_KEY_set_asn1_flag(ecdsa
, OPENSSL_EC_NAMED_CURVE
);
45 EC_KEY_set_conv_form(ecdsa
, POINT_CONVERSION_COMPRESSED
);
50 // Write PEM ECDSA keys
52 bool ecdsa_write_pem_public_key(ecdsa_t
*ecdsa
, FILE *fp
) {
53 return PEM_write_EC_PUBKEY(fp
, ecdsa
);
56 bool ecdsa_write_pem_private_key(ecdsa_t
*ecdsa
, FILE *fp
) {
57 return PEM_write_ECPrivateKey(fp
, ecdsa
, NULL
, NULL
, 0, NULL
, NULL
);