Correct PPTP server firewall rules chain.
[tomato/davidwu.git] / release / src / router / nettle / ecdsa-keygen.c
blobe83d282b8d04995ddb8cca5a340c4c4837204b6b
1 /* ecdsa-keygen.c */
3 /* nettle, low-level cryptographics library
5 * Copyright (C) 2013 Niels Möller
7 * The nettle library is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU Lesser General Public License as published by
9 * the Free Software Foundation; either version 2.1 of the License, or (at your
10 * option) any later version.
12 * The nettle library is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
15 * License for more details.
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with the nettle library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
20 * MA 02111-1301, USA.
23 /* Development of Nettle's ECC support was funded by the .SE Internet Fund. */
25 #if HAVE_CONFIG_H
26 # include "config.h"
27 #endif
29 #include <assert.h>
30 #include <stdlib.h>
32 #include "ecdsa.h"
33 #include "ecc-internal.h"
34 #include "nettle-internal.h"
36 void
37 ecdsa_generate_keypair (struct ecc_point *pub,
38 struct ecc_scalar *key,
39 void *random_ctx, nettle_random_func *random)
41 TMP_DECL(p, mp_limb_t, 3*ECC_MAX_SIZE + ECC_MUL_G_ITCH (ECC_MAX_SIZE));
42 mp_size_t itch = 3*pub->ecc->size + ECC_MUL_G_ITCH (pub->ecc->size);
44 assert (key->ecc == pub->ecc);
46 TMP_ALLOC (p, itch);
48 ecc_modq_random (key->ecc, key->p, random_ctx, random, p);
49 ecc_mul_g (pub->ecc, p, key->p, p + 3*pub->ecc->size);
50 ecc_j_to_a (pub->ecc, 1, pub->p, p, p + 3*pub->ecc->size);