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1 | /* -*-c-*- |
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2 | * |
3 | * Key fetching for Diffie-Hellman public and private keys |
4 | * |
5 | * (c) 2000 Straylight/Edgeware |
6 | */ |
7 | |
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8 | /*----- Licensing notice --------------------------------------------------* |
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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. |
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16 | * |
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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. |
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21 | * |
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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 | |
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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 }, |
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61 | { 0, 0, 0, 0 } |
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62 | }; |
63 | |
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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 | |
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98 | /*----- That's all, folks -------------------------------------------------*/ |