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

   1 /* -*-c-*-
   2  *
   3  * $Id: ec-fetch.c,v 1.2 2004/04/08 01:36:15 mdw Exp $
   4  *
   5  * Key fetching for elliptic curve public and private keys
   6  *
   7  * (c) 2004 Straylight/Edgeware
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of Catacomb.
  13  *
  14  * Catacomb is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU Library General Public License as
  16  * published by the Free Software Foundation; either version 2 of the
  17  * License, or (at your option) any later version.
  18  *
  19  * Catacomb is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU Library General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Library General Public
  25  * License along with Catacomb; if not, write to the Free
  26  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  27  * MA 02111-1307, USA.
  28  */
  29
  30 /*----- Header files ------------------------------------------------------*/
  31
  32 #include "ec-keys.h"
  33 #include "key.h"
  34
  35 /*----- Key fetching ------------------------------------------------------*/
  36
  37 const key_fetchdef ec_paramfetch[] = {
  38   { "curve",    offsetof(ec_pub, cstr),         KENC_STRING,    0 },
  39   { 0,          0,                              0,              0 }
  40 };
  41
  42 const key_fetchdef ec_pubfetch[] = {
  43   { "curve",    offsetof(ec_pub, cstr),         KENC_STRING,    0 },
  44   { "p",        offsetof(ec_pub, p),            KENC_EC,        0 },
  45   { 0,          0,                              0,              0 }
  46 };
  47
  48 static const key_fetchdef priv[] = {
  49   { "x",        offsetof(ec_priv, x),           KENC_MP,        0 },
  50   { 0,          0,                              0,              0 }
  51 };
  52
  53 const key_fetchdef ec_privfetch[] = {
  54   { "curve",    offsetof(ec_pub, cstr),         KENC_STRING,    0 },
  55   { "p",        offsetof(ec_pub, p),            KENC_EC,        0 },
  56   { "private",  0,                              KENC_STRUCT,    priv },
  57   { 0,          0,                              0,              0 }
  58 };
  59
  60 /* --- @ec_paramfree@, @ec_pubfree@, @ec_privfree@ --- *
  61  *
  62  * Arguments:   @ec_param *ep@, @ec_pub *ep@, @ec_priv *ep@ = pointer to
  63  *                      key block to free
  64  *
  65  * Returns:     ---
  66  *
  67  * Use:         Frees an elliptic curve key block
  68  */
  69
  70 void ec_paramfree(ec_param *ep)
  71 {
  72   if (ep->ei.c) ec_freeinfo(&ep->ei);
  73   xfree(ep->cstr);
  74 }
  75
  76 void ec_pubfree(ec_pub *ep)
  77 {
  78   if (ep->ei.c) ec_freeinfo(&ep->ei);
  79   xfree(ep->cstr);
  80   EC_DESTROY(&ep->p);
  81 }
  82
  83 void ec_privfree(ec_priv *ep)
  84 {
  85   if (ep->ei.c) ec_freeinfo(&ep->ei);
  86   xfree(ep->cstr);
  87   EC_DESTROY(&ep->p);
  88   mp_drop(ep->x);
  89 }
  90
  91 /*----- That's all, folks -------------------------------------------------*/