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

   1 /* -*-c-*-
   2  *
   3  * $Id: dh-fetch.c,v 1.2 2000/07/01 11:19:22 mdw Exp $
   4  *
   5  * Key fetching for Diffie-Hellman public and private keys
   6  *
   7  * (c) 2000 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 /*----- Revision history --------------------------------------------------*
  31  *
  32  * $Log: dh-fetch.c,v $
  33  * Revision 1.2  2000/07/01 11:19:22  mdw
  34  * New functions for freeing public and private keys.
  35  *
  36  * Revision 1.1  2000/06/17 10:41:45  mdw
  37  * Table for driving key data extraction.
  38  *
  39  */
  40
  41 /*----- Header files ------------------------------------------------------*/
  42
  43 #include "dh.h"
  44 #include "key.h"
  45
  46 /*----- Key fetching ------------------------------------------------------*/
  47
  48 const key_fetchdef dh_paramfetch[] = {
  49   { "p",        offsetof(dh_param, p),          KENC_MP,        0 },
  50   { "q",        offsetof(dh_param, q),          KENC_MP,        0 },
  51   { "g",        offsetof(dh_param, g),          KENC_MP,        0 },
  52   { 0,          0,                              0,              0 }
  53 };
  54
  55 const key_fetchdef dh_pubfetch[] = {
  56   { "p",        offsetof(dh_pub, dp.p),         KENC_MP,        0 },
  57   { "q",        offsetof(dh_pub, dp.q),         KENC_MP,        0 },
  58   { "g",        offsetof(dh_pub, dp.g),         KENC_MP,        0 },
  59   { "y",        offsetof(dh_pub, y),            KENC_MP,        0 },
  60   { 0,          0,                              0,              0 }
  61 };
  62
  63 static const key_fetchdef priv[] = {
  64   { "x",        offsetof(dh_priv, x),           KENC_MP,        0 },
  65   { 0,          0,                              0,              0 }
  66 };
  67
  68 const key_fetchdef dh_privfetch[] = {
  69   { "p",        offsetof(dh_priv, dp.p),        KENC_MP,        0 },
  70   { "q",        offsetof(dh_priv, dp.q),        KENC_MP,        0 },
  71   { "g",        offsetof(dh_priv, dp.g),        KENC_MP,        0 },
  72   { "y",        offsetof(dh_priv, y),           KENC_MP,        0 },
  73   { "private",  0,                              KENC_STRUCT,    priv },
  74   { 0,          0,                              0,              0 }
  75 };
  76
  77 /* --- @dh_paramfree@, @dh_pubfree@, @dh_privfree@ --- *
  78  *
  79  * Arguments:   @dh_param *dp@, @dh_pub *dp@, @dh_priv *dp@ = pointer
  80  *                      to key block to free
  81  *
  82  * Returns:     ---
  83  *
  84  * Use:         Frees a Diffie-Hellman key block.
  85  */
  86
  87 void dh_paramfree(dh_param *dp)
  88 {
  89   mp_drop(dp->p);
  90   mp_drop(dp->q);
  91   mp_drop(dp->g);
  92 }
  93
  94 void dh_pubfree(dh_pub *dp)
  95 {
  96   mp_drop(dp->dp.p);
  97   mp_drop(dp->dp.q);
  98   mp_drop(dp->dp.g);
  99   mp_drop(dp->y);
 100 }
 101
 102 void dh_privfree(dh_priv *dp)
 103 {
 104   mp_drop(dp->dp.p);
 105   mp_drop(dp->dp.q);
 106   mp_drop(dp->dp.g);
 107   mp_drop(dp->y);
 108   mp_drop(dp->x);
 109 }
 110
 111 /*----- That's all, folks -------------------------------------------------*/