crypto/external/bsd/heimdal/dist/lib/hcrypto/ec.c

   1 /*      $NetBSD: ec.c,v 1.1.1.2 2014/04/24 12:45:30 pettai Exp $        */
   2
   3 /*
   4  * Copyright (c) 2009 Kungliga Tekniska Högskolan
   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
  38 struct EC_POINT {
  39     int inf;
  40     mp_int x;
  41     mp_int y;
  42     mp_int z;
  43 };
  44
  45 struct EC_GROUP {
  46     size_t size;
  47     mp_int prime;
  48     mp_int order;
  49     mp_int Gx;
  50     mp_int Gy;
  51 };
  52
  53 struct EC_KEY {
  54     int type;
  55     EC_GROUP *group;
  56     EC_POINT *pubkey;
  57     mp_int privkey;
  58 };
  59
  60
  61 unsigned long
  62 EC_GROUP_get_degree(EC_GROUP *)
  63 {
  64 }
  65
  66 EC_GROUP *
  67 EC_KEY_get0_group(EC_KEY *)
  68 {
  69 }
  70
  71 int
  72 EC_GROUP_get_order(EC_GROUP *, BIGNUM *, BN_CTX *)
  73 {
  74 }
  75
  76 EC_KEY *
  77 o2i_ECPublicKey(EC_KEY **key, unsigned char **, size_t)
  78 {
  79 }
  80
  81 void
  82 EC_KEY_free(EC_KEY *)
  83 {
  84
  85 }
  86
  87 EC_GROUP *
  88 EC_GROUP_new_by_curve_name(int nid)
  89 {
  90 }
  91
  92 EC_KEY *
  93 EC_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
 101 void
 102 EC_POINT_free(EC_POINT *p)
 103 {
 104     mp_clear_multi(&p->x, p->y, p->z, NULL);
 105     free(p);
 106 }
 107
 108 static int
 109 ec_point_mul(EC_POINT *res, const EC_GROUP *group, const mp_int *point)
 110 {
 111 }
 112
 113 EC_POINT *
 114 EC_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
 128 int
 129 EC_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
 153 void
 154 EC_KEY_set_group(EC_KEY *, EC_GROUP *)
 155 {
 156
 157 }
 158
 159 void
 160 EC_GROUP_free(EC_GROUP *)
 161 {
 162 }
 163
 164 int
 165 EC_KEY_check_key(const EC_KEY *)
 166 {
 167 }
 168
 169 const BIGNUM *
 170 EC_KEY_get0_private_key(const EC_KEY *key)
 171 {
 172 }
 173
 174 int
 175 EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *bn)
 176 {
 177 }