666718998e
We don't require compatibility with any other software, but we do want Ed25519 keys to work the same as RSA keys for now.
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/*
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ecdsagen.c -- ECDSA key generation and export
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Copyright (C) 2011-2013 Guus Sliepen <guus@tinc-vpn.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "../system.h"
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#include "ed25519.h"
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#define __TINC_ECDSA_INTERNAL__
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typedef struct {
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uint8_t private[64];
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uint8_t public[32];
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} ecdsa_t;
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#include "../crypto.h"
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#include "../ecdsagen.h"
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#include "../utils.h"
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#include "../xalloc.h"
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// Generate ECDSA key
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ecdsa_t *ecdsa_generate(void) {
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ecdsa_t *ecdsa = xzalloc(sizeof *ecdsa);
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uint8_t seed[32];
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randomize(seed, sizeof seed);
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ed25519_create_keypair(ecdsa->public, ecdsa->private, seed);
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return ecdsa;
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}
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// Write PEM ECDSA keys
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static bool write_pem(FILE *fp, const char *type, void *buf, size_t size) {
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fprintf(fp, "-----BEGIN %s-----\n", type);
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char base64[65];
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while(size) {
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size_t todo = size > 48 ? 48 : size;
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b64encode(buf, base64, todo);
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fprintf(fp, "%s\n", base64);
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buf += todo;
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size -= todo;
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}
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fprintf(fp, "-----END %s-----\n", type);
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return !ferror(fp);
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}
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bool ecdsa_write_pem_public_key(ecdsa_t *ecdsa, FILE *fp) {
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return write_pem(fp, "ED25519 PUBLIC KEY", ecdsa->public, sizeof ecdsa->public);
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}
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bool ecdsa_write_pem_private_key(ecdsa_t *ecdsa, FILE *fp) {
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return write_pem(fp, "ED25519 PRIVATE KEY", ecdsa->private, sizeof *ecdsa);
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}
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