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 "ec.h"
  35
  36 struct EC_POINT {
  37     int inf;
  38     mp_int x;
  39     mp_int y;
  40     mp_int z;
  41 };
  42
  43 struct EC_GROUP {
  44     size_t size;
  45     mp_int prime;
  46     mp_int order;
  47     mp_int Gx;
  48     mp_int Gy;
  49 };
  50
  51 struct EC_KEY {
  52     int type;
  53     EC_GROUP *group;
  54     EC_POINT *pubkey;
  55     mp_int privkey;
  56 };
  57
  58
  59 unsigned long
  60 EC_GROUP_get_degree(EC_GROUP *)
  61 {
  62 }
  63
  64 EC_GROUP *
  65 EC_KEY_get0_group(EC_KEY *)
  66 {
  67 }
  68
  69 int
  70 EC_GROUP_get_order(EC_GROUP *, BIGNUM *, BN_CTX *)
  71 {
  72 }
  73
  74 EC_KEY *
  75 o2i_ECPublicKey(EC_KEY **key, unsigned char **, size_t)
  76 {
  77 }
  78
  79 void
  80 EC_KEY_free(EC_KEY *)
  81 {
  82
  83 }
  84
  85 EC_GROUP *
  86 EC_GROUP_new_by_curve_name(int nid)
  87 {
  88 }
  89
  90 EC_KEY *
  91 EC_KEY_new_by_curve_name(EC_GROUP_ID nid)
  92 {
  93     EC_KEY *key;
  94
  95     key = calloc(1, sizeof(*key));
  96     return key;
  97 }
  98
  99 void
 100 EC_POINT_free(EC_POINT *p)
 101 {
 102     mp_clear_multi(&p->x, p->y, p->z, NULL);
 103     free(p);
 104 }
 105
 106 static int
 107 ec_point_mul(EC_POINT *res, const EC_GROUP *group, const mp_int *point)
 108 {
 109 }
 110
 111 EC_POINT *
 112 EC_POINT_new(void)
 113 {
 114     EC_POINT *p;
 115
 116     p = calloc(1, sizeof(*p));
 117
 118     if (mp_init_multi(&p->x, &p->y, &p->z, NULL) != 0) {
 119         EC_POINT_free(p);
 120         return NULL;
 121     }
 122
 123     return p;
 124 }
 125
 126 int
 127 EC_KEY_generate_key(EC_KEY *key)
 128 {
 129     int ret = 0;
 130
 131     if (key->group == NULL)
 132         return 0;
 133
 134     do {
 135         random(key->privkey, key->group->size);
 136     } while(mp_cmp(key->privkey, key->group->order) >= 0);
 137
 138     if (key->pubkey == NULL)
 139         key->pubkey = EC_POINT_new();
 140
 141     if (ec_point_mul(&key->pubkey, key->group, key->privkey) != 1)
 142         goto error;
 143
 144     ret = 1;
 145  error:
 146     ECPOINT_free(&base);
 147
 148     return ret;
 149 }
 150
 151 void
 152 EC_KEY_set_group(EC_KEY *, EC_GROUP *)
 153 {
 154
 155 }
 156
 157 void
 158 EC_GROUP_free(EC_GROUP *)
 159 {
 160 }
 161
 162 int
 163 EC_KEY_check_key(const EC_KEY *)
 164 {
 165 }
 166
 167 const BIGNUM *
 168 EC_KEY_get0_private_key(const EC_KEY *key)
 169 {
 170 }
 171
 172 int
 173 EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *bn)
 174 {
 175 }