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seed_locl.h
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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 */