lib/hcrypto/ec.c

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