504232a1a910ffe42a990c4ba2b60df8371f4095
1 /*
2  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3  *
5  * this file except in compliance with the License.  You can obtain a copy
6  * in the file LICENSE in the source distribution or at
8  */
10 #include "e_os.h"
12 #ifdef OPENSSL_SYS_WIN32
13 # include <stdlib.h>
14 #endif
16 #undef c2l
17 #define c2l(c,l)        (l =((unsigned long)(*((c)++)))    , \
18                          l|=((unsigned long)(*((c)++)))<< 8L, \
19                          l|=((unsigned long)(*((c)++)))<<16L, \
20                          l|=((unsigned long)(*((c)++)))<<24L)
22 /* NOTE - c is not incremented as per c2l */
23 #undef c2ln
24 #define c2ln(c,l1,l2,n) { \
25                         c+=n; \
26                         l1=l2=0; \
27                         switch (n) { \
28                         case 8: l2 =((unsigned long)(*(--(c))))<<24L; \
29                         case 7: l2|=((unsigned long)(*(--(c))))<<16L; \
30                         case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \
31                         case 5: l2|=((unsigned long)(*(--(c))));     \
32                         case 4: l1 =((unsigned long)(*(--(c))))<<24L; \
33                         case 3: l1|=((unsigned long)(*(--(c))))<<16L; \
34                         case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \
35                         case 1: l1|=((unsigned long)(*(--(c))));     \
36                                 } \
37                         }
39 #undef l2c
40 #define l2c(l,c)        (*((c)++)=(unsigned char)(((l)     )&0xff), \
41                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
42                          *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
43                          *((c)++)=(unsigned char)(((l)>>24L)&0xff))
45 /* NOTE - c is not incremented as per l2c */
46 #undef l2cn
47 #define l2cn(l1,l2,c,n) { \
48                         c+=n; \
49                         switch (n) { \
50                         case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
51                         case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
52                         case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
53                         case 5: *(--(c))=(unsigned char)(((l2)     )&0xff); \
54                         case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
55                         case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
56                         case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
57                         case 1: *(--(c))=(unsigned char)(((l1)     )&0xff); \
58                                 } \
59                         }
61 /* NOTE - c is not incremented as per n2l */
62 #define n2ln(c,l1,l2,n) { \
63                         c+=n; \
64                         l1=l2=0; \
65                         switch (n) { \
66                         case 8: l2 =((unsigned long)(*(--(c))))    ; \
67                         case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
68                         case 6: l2|=((unsigned long)(*(--(c))))<<16; \
69                         case 5: l2|=((unsigned long)(*(--(c))))<<24; \
70                         case 4: l1 =((unsigned long)(*(--(c))))    ; \
71                         case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
72                         case 2: l1|=((unsigned long)(*(--(c))))<<16; \
73                         case 1: l1|=((unsigned long)(*(--(c))))<<24; \
74                                 } \
75                         }
77 /* NOTE - c is not incremented as per l2n */
78 #define l2nn(l1,l2,c,n) { \
79                         c+=n; \
80                         switch (n) { \
81                         case 8: *(--(c))=(unsigned char)(((l2)    )&0xff); \
82                         case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
83                         case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
84                         case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
85                         case 4: *(--(c))=(unsigned char)(((l1)    )&0xff); \
86                         case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
87                         case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
88                         case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
89                                 } \
90                         }
92 #undef n2l
93 #define n2l(c,l)        (l =((unsigned long)(*((c)++)))<<24L, \
94                          l|=((unsigned long)(*((c)++)))<<16L, \
95                          l|=((unsigned long)(*((c)++)))<< 8L, \
96                          l|=((unsigned long)(*((c)++))))
98 #undef l2n
99 #define l2n(l,c)        (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
100                          *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
101                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
102                          *((c)++)=(unsigned char)(((l)     )&0xff))
104 #if defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)
105 # define ROTL(a,n)     (_lrotl(a,n))
106 #else
107 # define ROTL(a,n)     ((((a)<<(n))&0xffffffffL)|((a)>>((32-(n))&31)))
108 #endif
110 #define C_M    0x3fc
111 #define C_0    22L
112 #define C_1    14L
113 #define C_2     6L
114 #define C_3     2L              /* left shift */
116 /* The rotate has an extra 16 added to it to help the x86 asm */
117 #if defined(CAST_PTR)
118 # define E_CAST(n,key,L,R,OP1,OP2,OP3) \
119         { \
120         int i; \
121         t=(key[n*2] OP1 R)&0xffffffffL; \
122         i=key[n*2+1]; \
123         t=ROTL(t,i); \
124         L^= (((((*(CAST_LONG *)((unsigned char *) \
125                         CAST_S_table0+((t>>C_2)&C_M)) OP2 \
126                 *(CAST_LONG *)((unsigned char *) \
127                         CAST_S_table1+((t<<C_3)&C_M)))&0xffffffffL) OP3 \
128                 *(CAST_LONG *)((unsigned char *) \
129                         CAST_S_table2+((t>>C_0)&C_M)))&0xffffffffL) OP1 \
130                 *(CAST_LONG *)((unsigned char *) \
131                         CAST_S_table3+((t>>C_1)&C_M)))&0xffffffffL; \
132         }
133 #elif defined(CAST_PTR2)
134 # define E_CAST(n,key,L,R,OP1,OP2,OP3) \
135         { \
136         int i; \
137         CAST_LONG u,v,w; \
138         w=(key[n*2] OP1 R)&0xffffffffL; \
139         i=key[n*2+1]; \
140         w=ROTL(w,i); \
141         u=w>>C_2; \
142         v=w<<C_3; \
143         u&=C_M; \
144         v&=C_M; \
145         t= *(CAST_LONG *)((unsigned char *)CAST_S_table0+u); \
146         u=w>>C_0; \
147         t=(t OP2 *(CAST_LONG *)((unsigned char *)CAST_S_table1+v))&0xffffffffL;\
148         v=w>>C_1; \
149         u&=C_M; \
150         v&=C_M; \
151         t=(t OP3 *(CAST_LONG *)((unsigned char *)CAST_S_table2+u)&0xffffffffL);\
152         t=(t OP1 *(CAST_LONG *)((unsigned char *)CAST_S_table3+v)&0xffffffffL);\
153         L^=(t&0xffffffff); \
154         }
155 #else
156 # define E_CAST(n,key,L,R,OP1,OP2,OP3) \
157         { \
158         CAST_LONG a,b,c,d; \
159         t=(key[n*2] OP1 R)&0xffffffff; \
160         t=ROTL(t,(key[n*2+1])); \
161         a=CAST_S_table0[(t>> 8)&0xff]; \
162         b=CAST_S_table1[(t    )&0xff]; \
163         c=CAST_S_table2[(t>>24)&0xff]; \
164         d=CAST_S_table3[(t>>16)&0xff]; \
165         L^=(((((a OP2 b)&0xffffffffL) OP3 c)&0xffffffffL) OP1 d)&0xffffffffL; \
166         }
167 #endif
169 extern const CAST_LONG CAST_S_table0[256];
170 extern const CAST_LONG CAST_S_table1[256];
171 extern const CAST_LONG CAST_S_table2[256];
172 extern const CAST_LONG CAST_S_table3[256];
173 extern const CAST_LONG CAST_S_table4[256];
174 extern const CAST_LONG CAST_S_table5[256];
175 extern const CAST_LONG CAST_S_table6[256];
176 extern const CAST_LONG CAST_S_table7[256];