| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id: dh-fetch.c,v 1.3 2004/04/08 01:36:15 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 | /*----- Header files ------------------------------------------------------*/ |
| 31 | |
| 32 | #include "dh.h" |
| 33 | #include "key.h" |
| 34 | |
| 35 | /*----- Key fetching ------------------------------------------------------*/ |
| 36 | |
| 37 | const key_fetchdef dh_paramfetch[] = { |
| 38 | { "p", offsetof(dh_param, p), KENC_MP, 0 }, |
| 39 | { "q", offsetof(dh_param, q), KENC_MP, 0 }, |
| 40 | { "g", offsetof(dh_param, g), KENC_MP, 0 }, |
| 41 | { 0, 0, 0, 0 } |
| 42 | }; |
| 43 | |
| 44 | const key_fetchdef dh_pubfetch[] = { |
| 45 | { "p", offsetof(dh_pub, dp.p), KENC_MP, 0 }, |
| 46 | { "q", offsetof(dh_pub, dp.q), KENC_MP, 0 }, |
| 47 | { "g", offsetof(dh_pub, dp.g), KENC_MP, 0 }, |
| 48 | { "y", offsetof(dh_pub, y), KENC_MP, 0 }, |
| 49 | { 0, 0, 0, 0 } |
| 50 | }; |
| 51 | |
| 52 | static const key_fetchdef priv[] = { |
| 53 | { "x", offsetof(dh_priv, x), KENC_MP, 0 }, |
| 54 | { 0, 0, 0, 0 } |
| 55 | }; |
| 56 | |
| 57 | const key_fetchdef dh_privfetch[] = { |
| 58 | { "p", offsetof(dh_priv, dp.p), KENC_MP, 0 }, |
| 59 | { "q", offsetof(dh_priv, dp.q), KENC_MP, 0 }, |
| 60 | { "g", offsetof(dh_priv, dp.g), KENC_MP, 0 }, |
| 61 | { "y", offsetof(dh_priv, y), KENC_MP, 0 }, |
| 62 | { "private", 0, KENC_STRUCT, priv }, |
| 63 | { 0, 0, 0, 0 } |
| 64 | }; |
| 65 | |
| 66 | /* --- @dh_paramfree@, @dh_pubfree@, @dh_privfree@ --- * |
| 67 | * |
| 68 | * Arguments: @dh_param *dp@, @dh_pub *dp@, @dh_priv *dp@ = pointer |
| 69 | * to key block to free |
| 70 | * |
| 71 | * Returns: --- |
| 72 | * |
| 73 | * Use: Frees a Diffie-Hellman key block. |
| 74 | */ |
| 75 | |
| 76 | void dh_paramfree(dh_param *dp) |
| 77 | { |
| 78 | mp_drop(dp->p); |
| 79 | mp_drop(dp->q); |
| 80 | mp_drop(dp->g); |
| 81 | } |
| 82 | |
| 83 | void dh_pubfree(dh_pub *dp) |
| 84 | { |
| 85 | mp_drop(dp->dp.p); |
| 86 | mp_drop(dp->dp.q); |
| 87 | mp_drop(dp->dp.g); |
| 88 | mp_drop(dp->y); |
| 89 | } |
| 90 | |
| 91 | void dh_privfree(dh_priv *dp) |
| 92 | { |
| 93 | mp_drop(dp->dp.p); |
| 94 | mp_drop(dp->dp.q); |
| 95 | mp_drop(dp->dp.g); |
| 96 | mp_drop(dp->y); |
| 97 | mp_drop(dp->x); |
| 98 | } |
| 99 | |
| 100 | /*----- That's all, folks -------------------------------------------------*/ |