1/* $NetBSD: ec.c,v 1.1.1.1 2011/04/13 18:14:49 elric Exp $ */ 2 3/* 4 * Copyright (c) 2009 Kungliga Tekniska H�gskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#include "ec.h" 37 38struct EC_POINT { 39 int inf; 40 mp_int x; 41 mp_int y; 42 mp_int z; 43}; 44 45struct EC_GROUP { 46 size_t size; 47 mp_int prime; 48 mp_int order; 49 mp_int Gx; 50 mp_int Gy; 51}; 52 53struct EC_KEY { 54 int type; 55 EC_GROUP *group; 56 EC_POINT *pubkey; 57 mp_int privkey; 58}; 59 60 61unsigned long 62EC_GROUP_get_degree(EC_GROUP *) 63{ 64} 65 66EC_GROUP * 67EC_KEY_get0_group(EC_KEY *) 68{ 69} 70 71int 72EC_GROUP_get_order(EC_GROUP *, BIGNUM *, BN_CTX *) 73{ 74} 75 76EC_KEY * 77o2i_ECPublicKey(EC_KEY **key, unsigned char **, size_t) 78{ 79} 80 81void 82EC_KEY_free(EC_KEY *) 83{ 84 85} 86 87EC_GROUP * 88EC_GROUP_new_by_curve_name(int nid) 89{ 90} 91 92EC_KEY * 93EC_KEY_new_by_curve_name(EC_GROUP_ID nid) 94{ 95 EC_KEY *key; 96 97 key = calloc(1, sizeof(*key)); 98 return key; 99} 100 101void 102EC_POINT_free(EC_POINT *p) 103{ 104 mp_clear_multi(&p->x, p->y, p->z, NULL); 105 free(p); 106} 107 108static int 109ec_point_mul(EC_POINT *res, const EC_GROUP *group, const mp_int *point) 110{ 111} 112 113EC_POINT * 114EC_POINT_new(void) 115{ 116 EC_POINT *p; 117 118 p = calloc(1, sizeof(*p)); 119 120 if (mp_init_multi(&p->x, &p->y, &p->z, NULL) != 0) { 121 EC_POINT_free(p); 122 return NULL; 123 } 124 125 return p; 126} 127 128int 129EC_KEY_generate_key(EC_KEY *key) 130{ 131 int ret = 0; 132 133 if (key->group == NULL) 134 return 0; 135 136 do { 137 random(key->privkey, key->group->size); 138 } while(mp_cmp(key->privkey, key->group->order) >= 0); 139 140 if (key->pubkey == NULL) 141 key->pubkey = EC_POINT_new(); 142 143 if (ec_point_mul(&key->pubkey, key->group, key->privkey) != 1) 144 goto error; 145 146 ret = 1; 147 error: 148 ECPOINT_free(&base); 149 150 return ret; 151} 152 153void 154EC_KEY_set_group(EC_KEY *, EC_GROUP *) 155{ 156 157} 158 159void 160EC_GROUP_free(EC_GROUP *) 161{ 162} 163 164int 165EC_KEY_check_key(const EC_KEY *) 166{ 167} 168 169const BIGNUM * 170EC_KEY_get0_private_key(const EC_KEY *key) 171{ 172} 173 174int 175EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *bn) 176{ 177} 178