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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: noekeon.h,v 1.2 2004/04/08 01:36:15 mdw Exp $ |
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4 | * |
5 | * The Noekeon block cipher |
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 | |
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30 | /*----- Notes on the Noekeon block cipher --------------------------------* |
31 | * |
32 | * A Nessie entry, by Joan Daemen, Michael Peeters, Gilles Van Assche and |
33 | * Vincent Rijmen, two of whom were the designers of the AES winner |
34 | * Rijndael. It's a simple cipher, based on Serpent-style bit-slicing. |
35 | * Speed is about middle-of-the-road -- about as fast as SAFER, faster than |
36 | * MARS. |
37 | */ |
38 | |
39 | #ifndef CATACOMB_NOEKEON_H |
40 | #define CATACOMB_NOEKEON_H |
41 | |
42 | #ifdef __cplusplus |
43 | extern "C" { |
44 | #endif |
45 | |
46 | /*----- Header files ------------------------------------------------------*/ |
47 | |
48 | #include <stddef.h> |
49 | |
50 | #include <mLib/bits.h> |
51 | |
52 | /*----- Magical numbers ---------------------------------------------------*/ |
53 | |
54 | #define NOEKEON_BLKSZ 16 |
55 | #define NOEKEON_KEYSZ 16 |
56 | #define NOEKEON_CLASS (N, B, 128) |
57 | |
58 | extern const octet noekeon_keysz[]; |
59 | |
60 | /*----- Data structures ---------------------------------------------------*/ |
61 | |
62 | typedef struct noekeon_ctx { |
63 | uint32 k[4]; |
64 | } noekeon_ctx; |
65 | |
66 | /*----- Functions provided ------------------------------------------------*/ |
67 | |
68 | /* --- @noekeon_init@ --- * |
69 | * |
70 | * Arguments: @noekeon_ctx *k@ = pointer to context to initialize |
71 | * @const void *buf@ = pointer to buffer of key material |
72 | * @size_t sz@ = size of the key material |
73 | * |
74 | * Returns: --- |
75 | * |
76 | * Use: Initializes a Noekeon context with a particular key. This |
77 | * uses indirect keying. The key must be 128 bits long. |
78 | */ |
79 | |
80 | extern void noekeon_init(noekeon_ctx */*k*/, |
81 | const void */*buf*/, size_t /*sz*/); |
82 | |
83 | /* --- @noekeon_eblk@, @noekeon_dblk@ --- * |
84 | * |
85 | * Arguments: @const noekeon_ctx *k@ = pointer to Noekeon context |
86 | * @const uint32 s[4]@ = pointer to source block |
87 | * @uint32 d[4]@ = pointer to destination block |
88 | * |
89 | * Returns: --- |
90 | * |
91 | * Use: Low-level block encryption and decryption. |
92 | */ |
93 | |
94 | extern void noekeon_eblk(const noekeon_ctx */*k*/, |
95 | const uint32 */*s*/, uint32 */*dst*/); |
96 | extern void noekeon_dblk(const noekeon_ctx */*k*/, |
97 | const uint32 */*s*/, uint32 */*dst*/); |
98 | |
99 | /*----- That's all, folks -------------------------------------------------*/ |
100 | |
101 | #ifdef __cplusplus |
102 | } |
103 | #endif |
104 | |
105 | #endif |