git.distorted.org.uk Git - u/mdw/catacomb/blob - math/ec-keys.h

   1 /* -*-c-*-
   2  *
   3  * Elliptic curve key-fetching
   4  *
   5  * (c) 2004 Straylight/Edgeware
   6  */
   7
   8 /*----- Licensing notice --------------------------------------------------*
   9  *
  10  * This file is part of Catacomb.
  11  *
  12  * Catacomb is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU Library General Public License as
  14  * published by the Free Software Foundation; either version 2 of the
  15  * License, or (at your option) any later version.
  16  *
  17  * Catacomb is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU Library General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Library General Public
  23  * License along with Catacomb; if not, write to the Free
  24  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  25  * MA 02111-1307, USA.
  26  */
  27
  28 #ifndef CATACOMB_EC_KEYS_H
  29 #define CATACOMB_EC_KEYS_H
  30
  31 #ifdef __cplusplus
  32   extern "C" {
  33 #endif
  34
  35 /*----- Header files ------------------------------------------------------*/
  36
  37 #ifndef CATACOMB_EC_H
  38 #  include "ec.h"
  39 #endif
  40
  41 #ifndef CATACOMB_KEY_H
  42 #  include "key.h"
  43 #endif
  44
  45 /*----- Key structures ----------------------------------------------------*/
  46
  47 typedef struct ec_param {
  48   ec_info ei;                           /* Curve information */
  49   char *cstr;                           /* Curve definition string */
  50 } ec_param;
  51
  52 typedef struct ec_pub {
  53   ec_info ei;                           /* Curve information */
  54   char *cstr;                           /* Curve definition string */
  55   ec p;                                 /* Public point */
  56 } ec_pub;
  57
  58 typedef struct ec_priv {
  59   ec_info ei;                           /* Curve information */
  60   char *cstr;                           /* Curve definition string */
  61   ec p;                                 /* Public point */
  62   mp *x;                                /* Secret exponent */
  63 } ec_priv;
  64
  65 extern const key_fetchdef ec_paramfetch[];
  66 #define EC_PARAMFETCHSZ 3
  67
  68 extern const key_fetchdef ec_pubfetch[];
  69 #define EC_PUBFETCHSZ 4
  70
  71 extern const key_fetchdef ec_privfetch[];
  72 #define EC_PRIVFETCHSZ 7
  73
  74 /*----- Functions provided ------------------------------------------------*/
  75
  76 /* --- @ec_paramfree@, @ec_pubfree@, @ec_privfree@ --- *
  77  *
  78  * Arguments:   @ec_param *ep@, @ec_pub *ep@, @ec_priv *ep@ = pointer to
  79  *                      key block to free
  80  *
  81  * Returns:     ---
  82  *
  83  * Use:         Frees an elliptic curve key block
  84  */
  85
  86 extern void ec_paramfree(ec_param */*ep*/);
  87 extern void ec_pubfree(ec_pub */*ep*/);
  88 extern void ec_privfree(ec_priv */*ep*/);
  89
  90 /*----- That's all, folks -------------------------------------------------*/
  91
  92 #ifdef __cplusplus
  93   }
  94 #endif
  95
  96 #endif