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e6e0e332 MW |
1 | /* -*-c-*- |
2 | * | |
3 | * $Id: storin.h,v 1.1 2000/05/21 11:28:30 mdw Exp $ | |
4 | * | |
5 | * Block cipher optimized for DSPs | |
6 | * | |
7 | * (c) 2000 Mark Wooding | |
8 | */ | |
9 | ||
10 | /*----- Licensing notice --------------------------------------------------* | |
11 | * | |
12 | * Copyright (c) 2000 Mark Wooding | |
13 | * All rights reserved. | |
14 | * | |
15 | * Redistribution and use in source and binary forms, with or without | |
16 | * modification, are permitted provided that the following conditions are | |
17 | * met: | |
18 | * | |
19 | * 1. Redistributions of source code must retain the above copyright | |
20 | * notice, this list of conditions and the following disclaimer. | |
21 | * | |
22 | * 2, Redistributions in binary form must reproduce the above copyright | |
23 | * notice, this list of conditions and the following disclaimer in the | |
24 | * documentation and/or other materials provided with the distribution. | |
25 | * | |
26 | * 3. The name of the authors may not be used to endorse or promote | |
27 | * products derived from this software without specific prior written | |
28 | * permission. | |
29 | * | |
30 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
31 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
32 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | |
33 | * NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | |
34 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
35 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
36 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
37 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
38 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN | |
39 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
40 | * POSSIBILITY OF SUCH DAMAGE. | |
41 | * | |
42 | * Instead of accepting the above terms, you may redistribute and/or modify | |
43 | * this software under the terms of either the GNU General Public License, | |
44 | * or the GNU Library General Public License, published by the Free | |
45 | * Software Foundation; either version 2 of the License, or (at your | |
46 | * option) any later version. | |
47 | */ | |
48 | ||
49 | /*----- Revision history --------------------------------------------------* | |
50 | * | |
51 | * $Log: storin.h,v $ | |
52 | * Revision 1.1 2000/05/21 11:28:30 mdw | |
53 | * Initial check-in. | |
54 | * | |
55 | */ | |
56 | ||
57 | #ifndef STORIN_H | |
58 | #define STORIN_H | |
59 | ||
60 | #ifdef __cplusplus | |
61 | extern "C" { | |
62 | #endif | |
63 | ||
64 | /*----- Header files ------------------------------------------------------*/ | |
65 | ||
66 | #ifndef BITS_H | |
67 | # include "bits.h" | |
68 | #endif | |
69 | ||
70 | /*----- Magic numbers -----------------------------------------------------*/ | |
71 | ||
72 | #define STORIN_BLKSZ 12 | |
73 | #define STORIN_KEYSZ 12 | |
74 | #define STORIN_CLASS (N, L, 96) | |
75 | ||
76 | #define STORIN_ROUNDS 8 | |
77 | ||
78 | /*----- Data structures ---------------------------------------------------*/ | |
79 | ||
80 | typedef struct storin_ctx { | |
81 | uint24 k[4 * (STORIN_ROUNDS + 1)]; | |
82 | } storin_ctx; | |
83 | ||
84 | /*----- Functions provided ------------------------------------------------*/ | |
85 | ||
86 | /* --- @storin_init24@ --- * | |
87 | * | |
88 | * Arguments: @storin_ctx *k@ = pointer to cipher context to initialize | |
89 | * @const uint24 *buf@ = pointer to buffer of key material | |
90 | * @size_t sz@ = size of the key material | |
91 | * | |
92 | * Returns: --- | |
93 | * | |
94 | * Use: Initializes the cipher for use. | |
95 | */ | |
96 | ||
97 | extern void storin_init24(storin_ctx */*k*/, | |
98 | const uint24 */*buf*/, size_t /*sz*/); | |
99 | ||
100 | /* --- @storin_eblk24@, @storin_dblk24@ --- * | |
101 | * | |
102 | * Arguments: @const storin_ctx *k@ = pointer to cipher context | |
103 | * @const uint24 s[4]@ = pointer to source block | |
104 | * @uint24 d[4]@ = pointer to destination block | |
105 | * | |
106 | * Returns: --- | |
107 | * | |
108 | * Use: Low-level block encryption and decryption. | |
109 | */ | |
110 | ||
111 | extern void storin_eblk24(const storin_ctx */*k*/, | |
112 | const uint24 */*s*/, uint24 */*d*/); | |
113 | extern void storin_dblk24(const storin_ctx */*k*/, | |
114 | const uint24 */*s*/, uint24 */*d*/); | |
115 | ||
116 | /*----- That's all, folks -------------------------------------------------*/ | |
117 | ||
118 | #ifdef __cplusplus | |
119 | } | |
120 | #endif | |
121 | ||
122 | #endif |