seed_locl.h revision 296465 
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# ifdef SEED_LONG               /* need 32-bit type */
33typedef unsigned long seed_word;
34# else
35typedef unsigned int seed_word;
36# endif
37
38
39#ifdef  __cplusplus
40extern "C" {
41#endif
42
43# define G_FUNC(v)       \
44        SS[0][(unsigned char)      (v) & 0xff] ^ SS[1][(unsigned char) ((v)>>8) & 0xff] ^ \
45        SS[2][(unsigned char)((v)>>16) & 0xff] ^ SS[3][(unsigned char)((v)>>24) & 0xff]
46
47# define char2word(c, i)  \
48        (i) = ((((seed_word)(c)[0]) << 24) | (((seed_word)(c)[1]) << 16) | (((seed_word)(c)[2]) << 8) | ((seed_word)(c)[3]))
49
50# define word2char(l, c)  \
51        *((c)+0) = (unsigned char)((l)>>24) & 0xff; \
52        *((c)+1) = (unsigned char)((l)>>16) & 0xff; \
53        *((c)+2) = (unsigned char)((l)>> 8) & 0xff; \
54        *((c)+3) = (unsigned char)((l))     & 0xff
55
56# define KEYSCHEDULE_UPDATE0(T0, T1, X1, X2, X3, X4, KC)  \
57        (T0) = (X3);                                     \
58        (X3) = (((X3)<<8) ^ ((X4)>>24)) & 0xffffffff;    \
59        (X4) = (((X4)<<8) ^ ((T0)>>24)) & 0xffffffff;    \
60        (T0) = ((X1) + (X3) - (KC))     & 0xffffffff;    \
61        (T1) = ((X2) + (KC) - (X4))     & 0xffffffff
62
63# define KEYSCHEDULE_UPDATE1(T0, T1, X1, X2, X3, X4, KC)  \
64        (T0) = (X1);                                     \
65        (X1) = (((X1)>>8) ^ ((X2)<<24)) & 0xffffffff;    \
66        (X2) = (((X2)>>8) ^ ((T0)<<24)) & 0xffffffff;    \
67        (T0) = ((X1) + (X3) - (KC))     & 0xffffffff;     \
68        (T1) = ((X2) + (KC) - (X4))     & 0xffffffff
69
70# define KEYUPDATE_TEMP(T0, T1, K)   \
71        (K)[0] = G_FUNC((T0));      \
72        (K)[1] = G_FUNC((T1))
73
74# define XOR_SEEDBLOCK(DST, SRC)      \
75        ((DST))[0] ^= ((SRC))[0];    \
76        ((DST))[1] ^= ((SRC))[1];    \
77        ((DST))[2] ^= ((SRC))[2];    \
78        ((DST))[3] ^= ((SRC))[3]
79
80# define MOV_SEEDBLOCK(DST, SRC)      \
81        ((DST))[0] = ((SRC))[0];     \
82        ((DST))[1] = ((SRC))[1];     \
83        ((DST))[2] = ((SRC))[2];     \
84        ((DST))[3] = ((SRC))[3]
85
86# define CHAR2WORD(C, I)              \
87        char2word((C),    (I)[0]);    \
88        char2word((C+4),  (I)[1]);    \
89        char2word((C+8),  (I)[2]);    \
90        char2word((C+12), (I)[3])
91
92# define WORD2CHAR(I, C)              \
93        word2char((I)[0], (C));       \
94        word2char((I)[1], (C+4));     \
95        word2char((I)[2], (C+8));     \
96        word2char((I)[3], (C+12))
97
98# define E_SEED(T0, T1, X1, X2, X3, X4, rbase)   \
99        (T0) = (X3) ^ (ks->data)[(rbase)];       \
100        (T1) = (X4) ^ (ks->data)[(rbase)+1];     \
101        (T1) ^= (T0);                            \
102        (T1) = G_FUNC((T1));                     \
103        (T0) = ((T0) + (T1)) & 0xffffffff;       \
104        (T0) = G_FUNC((T0));                     \
105        (T1) = ((T1) + (T0)) & 0xffffffff;       \
106        (T1) = G_FUNC((T1));                     \
107        (T0) = ((T0) + (T1)) & 0xffffffff;       \
108        (X1) ^= (T0);                            \
109        (X2) ^= (T1)
110
111#ifdef  __cplusplus
112}
113#endif
114
115#endif                          /* HEADER_SEED_LOCL_H */
116