103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
|
/*
|
||
|
|
ecdsa.c -- ECDSA key handling
|
||
|
|
Copyright (C) 2011-2013 Guus Sliepen <guus@tinc-vpn.org>
|
||
|
|
|
||
|
|
This program is free software; you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU General Public License as published by
|
||
|
|
the Free Software Foundation; either version 2 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License along
|
||
|
|
with this program; if not, write to the Free Software Foundation, Inc.,
|
||
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "../system.h"
|
||
|
|
|
||
|
|
#include "ed25519.h"
|
||
|
|
|
||
|
|
#define __TINC_ECDSA_INTERNAL__
|
||
|
|
typedef struct {
|
||
|
|
uint8_t private[64];
|
||
|
|
uint8_t public[32];
|
||
|
|
} ecdsa_t;
|
||
|
|
|
||
|
|
#include "../logger.h"
|
||
|
|
#include "../ecdsa.h"
|
||
|
|
#include "../utils.h"
|
||
|
|
#include "../xalloc.h"
|
||
|
|
|
||
|
|
// Get and set ECDSA keys
|
||
|
|
//
|
||
|
|
ecdsa_t *ecdsa_set_base64_public_key(const char *p) {
|
||
|
|
int len = strlen(p);
|
||
|
|
|
||
|
|
if(len != 43) {
|
||
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid size %s for public key!", len);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
ecdsa_t *ecdsa = xzalloc(sizeof *ecdsa);
|
||
|
|
len = b64decode(p, ecdsa->public, len);
|
||
|
|
if(len != 32) {
|
||
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Invalid format of public key! len = %d", len);
|
||
|
|
free(ecdsa);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ecdsa;
|
||
|
|
}
|
||
|
|
|
||
|
|
char *ecdsa_get_base64_public_key(ecdsa_t *ecdsa) {
|
||
|
|
char *base64 = xmalloc(44);
|
||
|
|
b64encode(ecdsa->public, base64, sizeof ecdsa->public);
|
||
|
|
|
||
|
|
return base64;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Read PEM ECDSA keys
|
||
|
|
|
||
|
|
ecdsa_t *ecdsa_read_pem_public_key(FILE *fp) {
|
||
|
|
ecdsa_t *ecdsa = xzalloc(sizeof *ecdsa);
|
||
|
|
if(fread(ecdsa->public, sizeof ecdsa->public, 1, fp) == 1)
|
||
|
|
return ecdsa;
|
||
|
|
free(ecdsa);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
ecdsa_t *ecdsa_read_pem_private_key(FILE *fp) {
|
||
|
|
ecdsa_t *ecdsa = xmalloc(sizeof *ecdsa);
|
||
|
|
if(fread(ecdsa, sizeof *ecdsa, 1, fp) == 1)
|
||
|
|
return ecdsa;
|
||
|
|
free(ecdsa);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
size_t ecdsa_size(ecdsa_t *ecdsa) {
|
||
|
|
return 64;
|
||
|
|
}
|
||
|
|
|
||
|
|
// TODO: standardise output format?
|
||
|
|
|
||
|
|
bool ecdsa_sign(ecdsa_t *ecdsa, const void *in, size_t len, void *sig) {
|
||
|
|
ed25519_sign(sig, in, len, ecdsa->public, ecdsa->private);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool ecdsa_verify(ecdsa_t *ecdsa, const void *in, size_t len, const void *sig) {
|
||
|
|
return ed25519_verify(sig, in, len, ecdsa->public);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool ecdsa_active(ecdsa_t *ecdsa) {
|
||
|
|
return ecdsa;
|
||
|
|
}
|
||
|
|
|
||
|
|
void ecdsa_free(ecdsa_t *ecdsa) {
|
||
|
|
free(ecdsa);
|
||
|
|
}
|