/*
ecdh.c -- Diffie-Hellman key exchange handling
- Copyright (C) 2011 Guus Sliepen <guus@tinc-vpn.org>
+ Copyright (C) 2011-2012 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
bool ecdh_generate_public(ecdh_t *ecdh, void *pubkey) {
*ecdh = EC_KEY_new_by_curve_name(NID_secp521r1);
+ if(!*ecdh) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Generating EC key_by_curve_name failed: %s", ERR_error_string(ERR_get_error(), NULL));
+ return false;
+ }
+
if(!EC_KEY_generate_key(*ecdh)) {
+ EC_KEY_free(*ecdh);
+ *ecdh = NULL;
logger(DEBUG_ALWAYS, LOG_ERR, "Generating EC key failed: %s", ERR_error_string(ERR_get_error(), NULL));
return false;
}
-
+
const EC_POINT *point = EC_KEY_get0_public_key(*ecdh);
if(!point) {
+ EC_KEY_free(*ecdh);
+ *ecdh = NULL;
logger(DEBUG_ALWAYS, LOG_ERR, "Getting public key failed: %s", ERR_error_string(ERR_get_error(), NULL));
return false;
}
size_t result = EC_POINT_point2oct(EC_KEY_get0_group(*ecdh), point, POINT_CONVERSION_COMPRESSED, pubkey, ECDH_SIZE, NULL);
if(!result) {
+ EC_KEY_free(*ecdh);
+ *ecdh = NULL;
logger(DEBUG_ALWAYS, LOG_ERR, "Converting EC_POINT to binary failed: %s", ERR_error_string(ERR_get_error(), NULL));
return false;
}
int result = EC_POINT_oct2point(EC_KEY_get0_group(*ecdh), point, pubkey, ECDH_SIZE, NULL);
if(!result) {
+ EC_POINT_free(point);
logger(DEBUG_ALWAYS, LOG_ERR, "Converting binary to EC_POINT failed: %s", ERR_error_string(ERR_get_error(), NULL));
return false;
}