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

   1 /* -*-c-*-
   2  *
   3  * Key fetching for Diffie-Hellman public and private keys
   4  *
   5  * (c) 2000 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 "dh.h"
  31 #include "key.h"
  32
  33 /*----- Key fetching ------------------------------------------------------*/
  34
  35 const key_fetchdef dh_paramfetch[] = {
  36   { "p",        offsetof(dh_param, p),          KENC_MP,        0 },
  37   { "q",        offsetof(dh_param, q),          KENC_MP,        0 },
  38   { "g",        offsetof(dh_param, g),          KENC_MP,        0 },
  39   { 0,          0,                              0,              0 }
  40 };
  41
  42 const key_fetchdef dh_pubfetch[] = {
  43   { "p",        offsetof(dh_pub, dp.p),         KENC_MP,        0 },
  44   { "q",        offsetof(dh_pub, dp.q),         KENC_MP,        0 },
  45   { "g",        offsetof(dh_pub, dp.g),         KENC_MP,        0 },
  46   { "y",        offsetof(dh_pub, y),            KENC_MP,        0 },
  47   { 0,          0,                              0,              0 }
  48 };
  49
  50 static const key_fetchdef priv[] = {
  51   { "x",        offsetof(dh_priv, x),           KENC_MP,        0 },
  52   { 0,          0,                              0,              0 }
  53 };
  54
  55 const key_fetchdef dh_privfetch[] = {
  56   { "p",        offsetof(dh_priv, dp.p),        KENC_MP,        0 },
  57   { "q",        offsetof(dh_priv, dp.q),        KENC_MP,        0 },
  58   { "g",        offsetof(dh_priv, dp.g),        KENC_MP,        0 },
  59   { "y",        offsetof(dh_priv, y),           KENC_MP,        0 },
  60   { "private",  0,                              KENC_STRUCT,    priv },
  61   { 0,          0,                              0,              0 }
  62 };
  63
  64 /* --- @dh_paramfree@, @dh_pubfree@, @dh_privfree@ --- *
  65  *
  66  * Arguments:   @dh_param *dp@, @dh_pub *dp@, @dh_priv *dp@ = pointer
  67  *                      to key block to free
  68  *
  69  * Returns:     ---
  70  *
  71  * Use:         Frees a Diffie-Hellman key block.
  72  */
  73
  74 void dh_paramfree(dh_param *dp)
  75 {
  76   mp_drop(dp->p);
  77   mp_drop(dp->q);
  78   mp_drop(dp->g);
  79 }
  80
  81 void dh_pubfree(dh_pub *dp)
  82 {
  83   mp_drop(dp->dp.p);
  84   mp_drop(dp->dp.q);
  85   mp_drop(dp->dp.g);
  86   mp_drop(dp->y);
  87 }
  88
  89 void dh_privfree(dh_priv *dp)
  90 {
  91   mp_drop(dp->dp.p);
  92   mp_drop(dp->dp.q);
  93   mp_drop(dp->dp.g);
  94   mp_drop(dp->y);
  95   mp_drop(dp->x);
  96 }
  97
  98 /*----- That's all, folks -------------------------------------------------*/