seed_locl.h revision 193770 
1/*
2 * Copyright (c) 2007 KISA(Korea Information Security Agency). All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Neither the name of author nor the names of its contributors may
10 *    be used to endorse or promote products derived from this software
11 *    without specific prior written permission.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 */
26#ifndef HEADER_SEED_LOCL_H
27#define HEADER_SEED_LOCL_H
28
29#include "openssl/e_os2.h"
30#include <openssl/seed.h>
31
32
33#ifdef SEED_LONG /* need 32-bit type */
34typedef unsigned long seed_word;
35#else
36typedef unsigned int seed_word;
37#endif
38
39
40#ifdef  __cplusplus
41extern "C" {
42#endif
43
44#define G_FUNC(v)       \
45        SS[0][(unsigned char)      (v) & 0xff] ^ SS[1][(unsigned char) ((v)>>8) & 0xff] ^ \
46        SS[2][(unsigned char)((v)>>16) & 0xff] ^ SS[3][(unsigned char)((v)>>24) & 0xff]
47
48#define char2word(c, i)  \
49        (i) = ((((seed_word)(c)[0]) << 24) | (((seed_word)(c)[1]) << 16) | (((seed_word)(c)[2]) << 8) | ((seed_word)(c)[3]))
50
51#define word2char(l, c)  \
52        *((c)+0) = (unsigned char)((l)>>24) & 0xff; \
53        *((c)+1) = (unsigned char)((l)>>16) & 0xff; \
54        *((c)+2) = (unsigned char)((l)>> 8) & 0xff; \
55        *((c)+3) = (unsigned char)((l))     & 0xff
56
57#define KEYSCHEDULE_UPDATE0(T0, T1, X1, X2, X3, X4, KC)  \
58        (T0) = (X3);                                     \
59        (X3) = (((X3)<<8) ^ ((X4)>>24)) & 0xffffffff;    \
60        (X4) = (((X4)<<8) ^ ((T0)>>24)) & 0xffffffff;    \
61        (T0) = ((X1) + (X3) - (KC))     & 0xffffffff;    \
62        (T1) = ((X2) + (KC) - (X4))     & 0xffffffff
63
64#define KEYSCHEDULE_UPDATE1(T0, T1, X1, X2, X3, X4, KC)  \
65        (T0) = (X1);                                     \
66        (X1) = (((X1)>>8) ^ ((X2)<<24)) & 0xffffffff;    \
67        (X2) = (((X2)>>8) ^ ((T0)<<24)) & 0xffffffff;    \
68        (T0) = ((X1) + (X3) - (KC))     & 0xffffffff;     \
69        (T1) = ((X2) + (KC) - (X4))     & 0xffffffff
70
71#define KEYUPDATE_TEMP(T0, T1, K)   \
72        (K)[0] = G_FUNC((T0));      \
73        (K)[1] = G_FUNC((T1))
74
75#define XOR_SEEDBLOCK(DST, SRC)      \
76        ((DST))[0] ^= ((SRC))[0];    \
77        ((DST))[1] ^= ((SRC))[1];    \
78        ((DST))[2] ^= ((SRC))[2];    \
79        ((DST))[3] ^= ((SRC))[3]
80
81#define MOV_SEEDBLOCK(DST, SRC)      \
82        ((DST))[0] = ((SRC))[0];     \
83        ((DST))[1] = ((SRC))[1];     \
84        ((DST))[2] = ((SRC))[2];     \
85        ((DST))[3] = ((SRC))[3]
86
87# define CHAR2WORD(C, I)              \
88        char2word((C),    (I)[0]);    \
89        char2word((C+4),  (I)[1]);    \
90        char2word((C+8),  (I)[2]);    \
91        char2word((C+12), (I)[3])
92
93# define WORD2CHAR(I, C)              \
94        word2char((I)[0], (C));       \
95        word2char((I)[1], (C+4));     \
96        word2char((I)[2], (C+8));     \
97        word2char((I)[3], (C+12))
98
99# define E_SEED(T0, T1, X1, X2, X3, X4, rbase)   \
100        (T0) = (X3) ^ (ks->data)[(rbase)];       \
101        (T1) = (X4) ^ (ks->data)[(rbase)+1];     \
102        (T1) ^= (T0);                            \
103        (T1) = G_FUNC((T1));                     \
104        (T0) = ((T0) + (T1)) & 0xffffffff;       \
105        (T0) = G_FUNC((T0));                     \
106        (T1) = ((T1) + (T0)) & 0xffffffff;       \
107        (T1) = G_FUNC((T1));                     \
108        (T0) = ((T0) + (T1)) & 0xffffffff;       \
109        (X1) ^= (T0);                            \
110        (X2) ^= (T1)
111
112#ifdef  __cplusplus
113}
114#endif
115
116#endif /* HEADER_SEED_LOCL_H */
117