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 */
34 typedef unsigned long seed_word;
35 #else
36 typedef unsigned int seed_word;
37 #endif
38
39
40 #ifdef __cplusplus
41 extern "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 */