1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/*
* Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifdef OPENSSL_SYS_WIN32
# include <stdlib.h>
#endif
#undef c2l
#define c2l(c,l) (l =((unsigned long)(*((c)++))) , \
l|=((unsigned long)(*((c)++)))<< 8L, \
l|=((unsigned long)(*((c)++)))<<16L, \
l|=((unsigned long)(*((c)++)))<<24L)
/* NOTE - c is not incremented as per c2l */
#undef c2ln
#define c2ln(c,l1,l2,n) { \
c+=n; \
l1=l2=0; \
switch (n) { \
case 8: l2 =((unsigned long)(*(--(c))))<<24L; \
case 7: l2|=((unsigned long)(*(--(c))))<<16L; \
case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \
case 5: l2|=((unsigned long)(*(--(c)))); \
case 4: l1 =((unsigned long)(*(--(c))))<<24L; \
case 3: l1|=((unsigned long)(*(--(c))))<<16L; \
case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \
case 1: l1|=((unsigned long)(*(--(c)))); \
} \
}
#undef l2c
#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
*((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
*((c)++)=(unsigned char)(((l)>>16L)&0xff), \
*((c)++)=(unsigned char)(((l)>>24L)&0xff))
/* NOTE - c is not incremented as per l2c */
#undef l2cn
#define l2cn(l1,l2,c,n) { \
c+=n; \
switch (n) { \
case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
} \
}
/* NOTE - c is not incremented as per n2l */
#define n2ln(c,l1,l2,n) { \
c+=n; \
l1=l2=0; \
switch (n) { \
case 8: l2 =((unsigned long)(*(--(c)))) ; \
/* fall thru */ \
case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
/* fall thru */ \
case 6: l2|=((unsigned long)(*(--(c))))<<16; \
/* fall thru */ \
case 5: l2|=((unsigned long)(*(--(c))))<<24; \
/* fall thru */ \
case 4: l1 =((unsigned long)(*(--(c)))) ; \
/* fall thru */ \
case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
/* fall thru */ \
case 2: l1|=((unsigned long)(*(--(c))))<<16; \
/* fall thru */ \
case 1: l1|=((unsigned long)(*(--(c))))<<24; \
} \
}
/* NOTE - c is not incremented as per l2n */
#define l2nn(l1,l2,c,n) { \
c+=n; \
switch (n) { \
case 8: *(--(c))=(unsigned char)(((l2) )&0xff); \
/* fall thru */ \
case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
/* fall thru */ \
case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
/* fall thru */ \
case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
/* fall thru */ \
case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \
/* fall thru */ \
case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
/* fall thru */ \
case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
/* fall thru */ \
case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
} \
}
#undef n2l
#define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24L, \
l|=((unsigned long)(*((c)++)))<<16L, \
l|=((unsigned long)(*((c)++)))<< 8L, \
l|=((unsigned long)(*((c)++))))
#undef l2n
#define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
*((c)++)=(unsigned char)(((l)>>16L)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
#if defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)
# define ROTL(a,n) (_lrotl(a,n))
#else
# define ROTL(a,n) ((((a)<<(n))&0xffffffffL)|((a)>>((32-(n))&31)))
#endif
#define C_M 0x3fc
#define C_0 22L
#define C_1 14L
#define C_2 6L
#define C_3 2L /* left shift */
/* The rotate has an extra 16 added to it to help the x86 asm */
#if defined(CAST_PTR)
# define E_CAST(n,key,L,R,OP1,OP2,OP3) \
{ \
int i; \
t=(key[n*2] OP1 R)&0xffffffffL; \
i=key[n*2+1]; \
t=ROTL(t,i); \
L^= (((((*(CAST_LONG *)((unsigned char *) \
CAST_S_table0+((t>>C_2)&C_M)) OP2 \
*(CAST_LONG *)((unsigned char *) \
CAST_S_table1+((t<<C_3)&C_M)))&0xffffffffL) OP3 \
*(CAST_LONG *)((unsigned char *) \
CAST_S_table2+((t>>C_0)&C_M)))&0xffffffffL) OP1 \
*(CAST_LONG *)((unsigned char *) \
CAST_S_table3+((t>>C_1)&C_M)))&0xffffffffL; \
}
#elif defined(CAST_PTR2)
# define E_CAST(n,key,L,R,OP1,OP2,OP3) \
{ \
int i; \
CAST_LONG u,v,w; \
w=(key[n*2] OP1 R)&0xffffffffL; \
i=key[n*2+1]; \
w=ROTL(w,i); \
u=w>>C_2; \
v=w<<C_3; \
u&=C_M; \
v&=C_M; \
t= *(CAST_LONG *)((unsigned char *)CAST_S_table0+u); \
u=w>>C_0; \
t=(t OP2 *(CAST_LONG *)((unsigned char *)CAST_S_table1+v))&0xffffffffL;\
v=w>>C_1; \
u&=C_M; \
v&=C_M; \
t=(t OP3 *(CAST_LONG *)((unsigned char *)CAST_S_table2+u)&0xffffffffL);\
t=(t OP1 *(CAST_LONG *)((unsigned char *)CAST_S_table3+v)&0xffffffffL);\
L^=(t&0xffffffff); \
}
#else
# define E_CAST(n,key,L,R,OP1,OP2,OP3) \
{ \
CAST_LONG a,b,c,d; \
t=(key[n*2] OP1 R)&0xffffffff; \
t=ROTL(t,(key[n*2+1])); \
a=CAST_S_table0[(t>> 8)&0xff]; \
b=CAST_S_table1[(t )&0xff]; \
c=CAST_S_table2[(t>>24)&0xff]; \
d=CAST_S_table3[(t>>16)&0xff]; \
L^=(((((a OP2 b)&0xffffffffL) OP3 c)&0xffffffffL) OP1 d)&0xffffffffL; \
}
#endif
extern const CAST_LONG CAST_S_table0[256];
extern const CAST_LONG CAST_S_table1[256];
extern const CAST_LONG CAST_S_table2[256];
extern const CAST_LONG CAST_S_table3[256];
extern const CAST_LONG CAST_S_table4[256];
extern const CAST_LONG CAST_S_table5[256];
extern const CAST_LONG CAST_S_table6[256];
extern const CAST_LONG CAST_S_table7[256];
|
