git.distorted.org.uk Git - u/mdw/catacomb/blob - math/ec-fetch.c

   1 /* -*-c-*-
   2  *
   3  * Key fetching for elliptic curve public and private keys
   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 /*----- Header files ------------------------------------------------------*/
  29
  30 #include "ec-keys.h"
  31 #include "key.h"
  32
  33 /*----- Key fetching ------------------------------------------------------*/
  34
  35 const key_fetchdef ec_paramfetch[] = {
  36   { "curve",    offsetof(ec_pub, cstr),         KENC_STRING,    0 },
  37   { 0,          0,                              0,              0 }
  38 };
  39
  40 const key_fetchdef ec_pubfetch[] = {
  41   { "curve",    offsetof(ec_pub, cstr),         KENC_STRING,    0 },
  42   { "p",        offsetof(ec_pub, p),            KENC_EC,        0 },
  43   { 0,          0,                              0,              0 }
  44 };
  45
  46 static const key_fetchdef priv[] = {
  47   { "x",        offsetof(ec_priv, x),           KENC_MP,        0 },
  48   { 0,          0,                              0,              0 }
  49 };
  50
  51 const key_fetchdef ec_privfetch[] = {
  52   { "curve",    offsetof(ec_pub, cstr),         KENC_STRING,    0 },
  53   { "p",        offsetof(ec_pub, p),            KENC_EC,        0 },
  54   { "private",  0,                              KENC_STRUCT,    priv },
  55   { 0,          0,                              0,              0 }
  56 };
  57
  58 /* --- @ec_paramfree@, @ec_pubfree@, @ec_privfree@ --- *
  59  *
  60  * Arguments:   @ec_param *ep@, @ec_pub *ep@, @ec_priv *ep@ = pointer to
  61  *                      key block to free
  62  *
  63  * Returns:     ---
  64  *
  65  * Use:         Frees an elliptic curve key block
  66  */
  67
  68 void ec_paramfree(ec_param *ep)
  69 {
  70   if (ep->ei.c) ec_freeinfo(&ep->ei);
  71   xfree(ep->cstr);
  72 }
  73
  74 void ec_pubfree(ec_pub *ep)
  75 {
  76   if (ep->ei.c) ec_freeinfo(&ep->ei);
  77   xfree(ep->cstr);
  78   EC_DESTROY(&ep->p);
  79 }
  80
  81 void ec_privfree(ec_priv *ep)
  82 {
  83   if (ep->ei.c) ec_freeinfo(&ep->ei);
  84   xfree(ep->cstr);
  85   EC_DESTROY(&ep->p);
  86   mp_drop(ep->x);
  87 }
  88
  89 /*----- That's all, folks -------------------------------------------------*/