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"
24 #define TINC_ECDSA_INTERNAL
30 #include "../ecdsagen.h"
32 #include "../xalloc.h"
33 #include "../random.h"
37 ecdsa_t *ecdsa_generate(void) {
38 ecdsa_t *ecdsa = xzalloc(sizeof(*ecdsa));
41 randomize(seed, sizeof(seed));
42 ed25519_create_keypair(ecdsa->public, ecdsa->private, seed);
43 memzero(seed, sizeof(seed));
48 // Write PEM ECDSA keys
50 static bool write_pem(FILE *fp, const char *type, void *vbuf, size_t size) {
51 fprintf(fp, "-----BEGIN %s-----\n", type);
57 size_t todo = size > 48 ? 48 : size;
58 b64encode_tinc(buf, base64, todo);
59 fprintf(fp, "%s\n", base64);
64 memzero(base64, sizeof(base64));
66 fprintf(fp, "-----END %s-----\n", type);
70 bool ecdsa_write_pem_public_key(ecdsa_t *ecdsa, FILE *fp) {
71 return write_pem(fp, "ED25519 PUBLIC KEY", ecdsa->public, sizeof(ecdsa->public));
74 bool ecdsa_write_pem_private_key(ecdsa_t *ecdsa, FILE *fp) {
75 return write_pem(fp, "ED25519 PRIVATE KEY", ecdsa->private, sizeof(*ecdsa));