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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: ecb.h,v 1.2 1999/12/10 23:16:40 mdw Exp $ |
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4 | * |
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5 | * Electronic code book for block ciphers |
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6 | * |
7 | * (c) 1999 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: ecb.h,v $ |
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33 | * Revision 1.2 1999/12/10 23:16:40 mdw |
34 | * Split mode macros into interface and implementation. |
35 | * |
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36 | * Revision 1.1 1999/09/03 08:41:12 mdw |
37 | * Initial import. |
38 | * |
39 | */ |
40 | |
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41 | #ifndef CATACOMB_ECB_H |
42 | #define CATACOMB_ECB_H |
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43 | |
44 | #ifdef __cplusplus |
45 | extern "C" { |
46 | #endif |
47 | |
48 | /*----- Header files ------------------------------------------------------*/ |
49 | |
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50 | #include <stddef.h> |
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51 | |
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52 | #ifndef CATACOMB_GCIPHER_H |
53 | # include "gcipher.h" |
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54 | #endif |
55 | |
56 | /*----- Macros ------------------------------------------------------------*/ |
57 | |
58 | /* --- @ECB_DECL@ --- * |
59 | * |
60 | * Arguments: @PRE@, @pre@ = prefixes for the underlying block cipher |
61 | * |
62 | * Use: Creates declarations for ECB stealing mode. |
63 | */ |
64 | |
65 | #define ECB_DECL(PRE, pre) \ |
66 | \ |
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67 | /* --- Electronic codebook context --- */ \ |
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68 | \ |
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69 | typedef struct pre##_ecbctx { \ |
70 | pre##_ctx ctx; /* Underlying cipher context */ \ |
71 | } pre##_ecbctx; \ |
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72 | \ |
73 | /* --- @pre_ecbsetkey@ --- * \ |
74 | * \ |
75 | * Arguments: @pre_ecbctx *ctx@ = pointer to ECB context block \ |
76 | * @const pre_ctx *k@ = pointer to cipher context \ |
77 | * \ |
78 | * Returns: --- \ |
79 | * \ |
80 | * Use: Sets the ECB context to use a different cipher key. \ |
81 | */ \ |
82 | \ |
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83 | extern void pre##_ecbsetkey(pre##_ecbctx */*ctx*/, \ |
84 | const pre##_ctx */*k*/); \ |
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85 | \ |
86 | /* --- @pre_ecbinit@ --- * \ |
87 | * \ |
88 | * Arguments: @pre_ecbctx *ctx@ = pointer to cipher context \ |
89 | * @const void *key@ = pointer to the key buffer \ |
90 | * @size_t sz@ = size of the key \ |
91 | * @const void *iv@ = pointer to initialization vector \ |
92 | * \ |
93 | * Returns: --- \ |
94 | * \ |
95 | * Use: Initializes an ECB context ready for use. This is \ |
96 | * equivalent to calls to @pre_init@ and @pre_setkey@. \ |
97 | */ \ |
98 | \ |
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99 | extern void pre##_ecbinit(pre##_ecbctx */*ctx*/, \ |
100 | const void */*key*/, size_t /*sz*/, \ |
101 | const void */*iv*/); \ |
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102 | \ |
103 | /* --- @pre_ecbencrypt@ --- * \ |
104 | * \ |
105 | * Arguments: @pre_ecbctx *ctx@ = pointer to ECB context block \ |
106 | * @const void *src@ = pointer to source data \ |
107 | * @void *dest@ = pointer to destination data \ |
108 | * @size_t sz@ = size of block to be encrypted \ |
109 | * \ |
110 | * Returns: --- \ |
111 | * \ |
112 | * Use: Encrypts a block with a block cipher in ECB mode, with \ |
113 | * ciphertext stealing and other clever tricks. \ |
114 | * Essentially, data can be encrypted in arbitrary sized \ |
115 | * chunks, although decryption must use the same chunks. \ |
116 | */ \ |
117 | \ |
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118 | extern void pre##_ecbencrypt(pre##_ecbctx */*ctx*/, \ |
119 | const void */*src*/, void */*dest*/, \ |
120 | size_t /*sz*/); \ |
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121 | \ |
122 | /* --- @pre_ecbdecrypt@ --- * \ |
123 | * \ |
124 | * Arguments: @pre_ecbctx *ctx@ = pointer to ECB context block \ |
125 | * @const void *src@ = pointer to source data \ |
126 | * @void *dest@ = pointer to destination data \ |
127 | * @size_t sz@ = size of block to be encrypted \ |
128 | * \ |
129 | * Returns: --- \ |
130 | * \ |
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131 | * Use: Decrypts a block with a block cipher in ECB mode, with \ |
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132 | * ciphertext stealing and other clever tricks. \ |
133 | * Essentially, data can be encrypted in arbitrary sized \ |
134 | * chunks, although decryption must use the same chunks. \ |
135 | */ \ |
136 | \ |
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137 | extern void pre##_ecbdecrypt(pre##_ecbctx */*ctx*/, \ |
138 | const void */*src*/, void */*dest*/, \ |
139 | size_t /*sz*/); \ |
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140 | \ |
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141 | /* --- Generic cipher interface --- */ \ |
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142 | \ |
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143 | extern const gccipher pre##_ecb; |
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144 | |
145 | /*----- That's all, folks -------------------------------------------------*/ |
146 | |
147 | #ifdef __cplusplus |
148 | } |
149 | #endif |
150 | |
151 | #endif |