+/*
+ ecdsa.c -- ECDSA key handling
+ Copyright (C) 2011 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 <openssl/pem.h>
+#include <openssl/err.h>
+
+#include "logger.h"
+#include "ecdsa.h"
+#include "utils.h"
+
+// Set ECDSA keys
+
+bool ecdsa_set_base64_public_key(ecdsa_t *ecdsa, const char *p) {
+ *ecdsa = EC_KEY_new_by_curve_name(NID_secp521r1);
+
+ int len = strlen(p);
+ unsigned char pubkey[len / 4 * 3 + 3];
+ const unsigned char *ppubkey = pubkey;
+ len = b64decode(p, pubkey, len);
+
+ if(!o2i_ECPublicKey(ecdsa, &ppubkey, len)) {
+ logger(LOG_DEBUG, "o2i_ECPublicKey failed: %s", ERR_error_string(ERR_get_error(), NULL));
+ abort();
+ }
+
+ return true;
+}
+
+// Read PEM ECDSA keys
+
+bool ecdsa_read_pem_public_key(ecdsa_t *ecdsa, FILE *fp) {
+ *ecdsa = PEM_read_EC_PUBKEY(fp, ecdsa, NULL, NULL);
+
+ if(*ecdsa)
+ return true;
+
+ logger(LOG_ERR, "Unable to read ECDSA public key: %s", ERR_error_string(ERR_get_error(), NULL));
+ return false;
+}
+
+bool ecdsa_read_pem_private_key(ecdsa_t *ecdsa, FILE *fp) {
+ *ecdsa = PEM_read_ECPrivateKey(fp, NULL, NULL, NULL);
+
+ if(*ecdsa)
+ return true;
+
+ logger(LOG_ERR, "Unable to read ECDSA private key: %s", ERR_error_string(ERR_get_error(), NULL));
+ return false;
+}
+
+size_t ecdsa_size(ecdsa_t *ecdsa) {
+ return ECDSA_size(*ecdsa);
+}
+
+bool ecdsa_sign(ecdsa_t *ecdsa, const void *in, size_t len, void *sig) {
+ logger(LOG_ERR, "Unable to perform ECDSA signature: %s", ERR_error_string(ERR_get_error(), NULL));
+ return false;
+}
+
+bool ecdsa_verify(ecdsa_t *ecdsa, const void *in, size_t len, const void *sig) {
+ logger(LOG_ERR, "Unable to perform ECDSA verification: %s", ERR_error_string(ERR_get_error(), NULL));
+ return false;
+}