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58964a49 RE |
1 | /* crypto/cast/cast_lcl.h */ |
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
3 | * All rights reserved. | |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
a95d2c51 BM |
59 | |
60 | #include "e_os.h" | |
61 | ||
cf1b7d96 | 62 | #ifdef OPENSSL_SYS_WIN32 |
58964a49 RE |
63 | #include <stdlib.h> |
64 | #endif | |
65 | ||
7e701817 | 66 | |
58964a49 RE |
67 | #undef c2l |
68 | #define c2l(c,l) (l =((unsigned long)(*((c)++))) , \ | |
69 | l|=((unsigned long)(*((c)++)))<< 8L, \ | |
70 | l|=((unsigned long)(*((c)++)))<<16L, \ | |
71 | l|=((unsigned long)(*((c)++)))<<24L) | |
72 | ||
73 | /* NOTE - c is not incremented as per c2l */ | |
74 | #undef c2ln | |
75 | #define c2ln(c,l1,l2,n) { \ | |
76 | c+=n; \ | |
77 | l1=l2=0; \ | |
78 | switch (n) { \ | |
79 | case 8: l2 =((unsigned long)(*(--(c))))<<24L; \ | |
80 | case 7: l2|=((unsigned long)(*(--(c))))<<16L; \ | |
81 | case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \ | |
82 | case 5: l2|=((unsigned long)(*(--(c)))); \ | |
83 | case 4: l1 =((unsigned long)(*(--(c))))<<24L; \ | |
84 | case 3: l1|=((unsigned long)(*(--(c))))<<16L; \ | |
85 | case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \ | |
86 | case 1: l1|=((unsigned long)(*(--(c)))); \ | |
87 | } \ | |
88 | } | |
89 | ||
90 | #undef l2c | |
91 | #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ | |
92 | *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ | |
93 | *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ | |
94 | *((c)++)=(unsigned char)(((l)>>24L)&0xff)) | |
95 | ||
96 | /* NOTE - c is not incremented as per l2c */ | |
97 | #undef l2cn | |
98 | #define l2cn(l1,l2,c,n) { \ | |
99 | c+=n; \ | |
100 | switch (n) { \ | |
101 | case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \ | |
102 | case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \ | |
103 | case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \ | |
104 | case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ | |
105 | case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \ | |
106 | case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \ | |
107 | case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \ | |
108 | case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ | |
109 | } \ | |
110 | } | |
111 | ||
112 | /* NOTE - c is not incremented as per n2l */ | |
113 | #define n2ln(c,l1,l2,n) { \ | |
114 | c+=n; \ | |
115 | l1=l2=0; \ | |
116 | switch (n) { \ | |
117 | case 8: l2 =((unsigned long)(*(--(c)))) ; \ | |
118 | case 7: l2|=((unsigned long)(*(--(c))))<< 8; \ | |
119 | case 6: l2|=((unsigned long)(*(--(c))))<<16; \ | |
120 | case 5: l2|=((unsigned long)(*(--(c))))<<24; \ | |
121 | case 4: l1 =((unsigned long)(*(--(c)))) ; \ | |
122 | case 3: l1|=((unsigned long)(*(--(c))))<< 8; \ | |
123 | case 2: l1|=((unsigned long)(*(--(c))))<<16; \ | |
124 | case 1: l1|=((unsigned long)(*(--(c))))<<24; \ | |
125 | } \ | |
126 | } | |
127 | ||
128 | /* NOTE - c is not incremented as per l2n */ | |
129 | #define l2nn(l1,l2,c,n) { \ | |
130 | c+=n; \ | |
131 | switch (n) { \ | |
132 | case 8: *(--(c))=(unsigned char)(((l2) )&0xff); \ | |
133 | case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \ | |
134 | case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \ | |
135 | case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \ | |
136 | case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \ | |
137 | case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \ | |
138 | case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \ | |
139 | case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \ | |
140 | } \ | |
141 | } | |
142 | ||
143 | #undef n2l | |
144 | #define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24L, \ | |
145 | l|=((unsigned long)(*((c)++)))<<16L, \ | |
146 | l|=((unsigned long)(*((c)++)))<< 8L, \ | |
147 | l|=((unsigned long)(*((c)++)))) | |
148 | ||
149 | #undef l2n | |
150 | #define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \ | |
151 | *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ | |
152 | *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ | |
153 | *((c)++)=(unsigned char)(((l) )&0xff)) | |
154 | ||
cf1b7d96 | 155 | #if defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER) |
58964a49 RE |
156 | #define ROTL(a,n) (_lrotl(a,n)) |
157 | #else | |
158 | #define ROTL(a,n) ((((a)<<(n))&0xffffffffL)|((a)>>(32-(n)))) | |
159 | #endif | |
160 | ||
161 | #define C_M 0x3fc | |
162 | #define C_0 22L | |
163 | #define C_1 14L | |
164 | #define C_2 6L | |
165 | #define C_3 2L /* left shift */ | |
166 | ||
167 | /* The rotate has an extra 16 added to it to help the x86 asm */ | |
168 | #if defined(CAST_PTR) | |
169 | #define E_CAST(n,key,L,R,OP1,OP2,OP3) \ | |
170 | { \ | |
171 | int i; \ | |
172 | t=(key[n*2] OP1 R)&0xffffffffL; \ | |
173 | i=key[n*2+1]; \ | |
174 | t=ROTL(t,i); \ | |
175 | L^= (((((*(CAST_LONG *)((unsigned char *) \ | |
176 | CAST_S_table0+((t>>C_2)&C_M)) OP2 \ | |
177 | *(CAST_LONG *)((unsigned char *) \ | |
178 | CAST_S_table1+((t<<C_3)&C_M)))&0xffffffffL) OP3 \ | |
179 | *(CAST_LONG *)((unsigned char *) \ | |
180 | CAST_S_table2+((t>>C_0)&C_M)))&0xffffffffL) OP1 \ | |
181 | *(CAST_LONG *)((unsigned char *) \ | |
182 | CAST_S_table3+((t>>C_1)&C_M)))&0xffffffffL; \ | |
183 | } | |
184 | #elif defined(CAST_PTR2) | |
185 | #define E_CAST(n,key,L,R,OP1,OP2,OP3) \ | |
186 | { \ | |
187 | int i; \ | |
188 | CAST_LONG u,v,w; \ | |
189 | w=(key[n*2] OP1 R)&0xffffffffL; \ | |
190 | i=key[n*2+1]; \ | |
191 | w=ROTL(w,i); \ | |
192 | u=w>>C_2; \ | |
193 | v=w<<C_3; \ | |
194 | u&=C_M; \ | |
195 | v&=C_M; \ | |
196 | t= *(CAST_LONG *)((unsigned char *)CAST_S_table0+u); \ | |
197 | u=w>>C_0; \ | |
198 | t=(t OP2 *(CAST_LONG *)((unsigned char *)CAST_S_table1+v))&0xffffffffL;\ | |
199 | v=w>>C_1; \ | |
200 | u&=C_M; \ | |
201 | v&=C_M; \ | |
202 | t=(t OP3 *(CAST_LONG *)((unsigned char *)CAST_S_table2+u)&0xffffffffL);\ | |
203 | t=(t OP1 *(CAST_LONG *)((unsigned char *)CAST_S_table3+v)&0xffffffffL);\ | |
204 | L^=(t&0xffffffff); \ | |
205 | } | |
206 | #else | |
207 | #define E_CAST(n,key,L,R,OP1,OP2,OP3) \ | |
208 | { \ | |
209 | CAST_LONG a,b,c,d; \ | |
210 | t=(key[n*2] OP1 R)&0xffffffff; \ | |
211 | t=ROTL(t,(key[n*2+1])); \ | |
212 | a=CAST_S_table0[(t>> 8)&0xff]; \ | |
213 | b=CAST_S_table1[(t )&0xff]; \ | |
214 | c=CAST_S_table2[(t>>24)&0xff]; \ | |
215 | d=CAST_S_table3[(t>>16)&0xff]; \ | |
216 | L^=(((((a OP2 b)&0xffffffffL) OP3 c)&0xffffffffL) OP1 d)&0xffffffffL; \ | |
217 | } | |
218 | #endif | |
219 | ||
e62991a0 AP |
220 | extern const CAST_LONG CAST_S_table0[256]; |
221 | extern const CAST_LONG CAST_S_table1[256]; | |
222 | extern const CAST_LONG CAST_S_table2[256]; | |
223 | extern const CAST_LONG CAST_S_table3[256]; | |
224 | extern const CAST_LONG CAST_S_table4[256]; | |
225 | extern const CAST_LONG CAST_S_table5[256]; | |
226 | extern const CAST_LONG CAST_S_table6[256]; | |
227 | extern const CAST_LONG CAST_S_table7[256]; |