Commit | Line | Data |
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4ace4afb SH |
1 | /* fcrypt.c */ |
2 | /* Copyright (C) 1993 Eric Young - see README for more details */ | |
3 | #include <stdio.h> | |
4 | ||
5 | /* Eric Young. | |
6 | * This version of crypt has been developed from my MIT compatable | |
7 | * DES library. | |
8 | * The library is available at pub/DES at ftp.psy.uq.oz.au | |
9 | * eay@psych.psy.uq.oz.au | |
10 | */ | |
11 | ||
dd01f956 SH |
12 | #if defined(__BORLANDC__) |
13 | #pragma warn -8004 /* "'foo' is assigned a value that is never used" */ | |
14 | #endif | |
15 | ||
4ace4afb SH |
16 | typedef unsigned char des_cblock[8]; |
17 | ||
18 | typedef struct des_ks_struct | |
19 | { | |
20 | union { | |
21 | des_cblock _; | |
22 | /* make sure things are correct size on machines with | |
23 | * 8 byte longs */ | |
24 | unsigned long pad[2]; | |
25 | } ks; | |
26 | #define _ ks._ | |
27 | } des_key_schedule[16]; | |
28 | ||
29 | #define DES_KEY_SZ (sizeof(des_cblock)) | |
30 | #define DES_ENCRYPT 1 | |
31 | #define DES_DECRYPT 0 | |
32 | ||
33 | #define ITERATIONS 16 | |
34 | #define HALF_ITERATIONS 8 | |
35 | ||
36 | #define c2l(c,l) (l =((unsigned long)(*((c)++))) , \ | |
37 | l|=((unsigned long)(*((c)++)))<< 8, \ | |
38 | l|=((unsigned long)(*((c)++)))<<16, \ | |
39 | l|=((unsigned long)(*((c)++)))<<24) | |
40 | ||
41 | #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ | |
42 | *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ | |
43 | *((c)++)=(unsigned char)(((l)>>16)&0xff), \ | |
44 | *((c)++)=(unsigned char)(((l)>>24)&0xff)) | |
45 | ||
46 | static unsigned long SPtrans[8][64]={ | |
2534dd6e | 47 | { /* nibble 0 */ |
4ace4afb SH |
48 | 0x00820200, 0x00020000, 0x80800000, 0x80820200, |
49 | 0x00800000, 0x80020200, 0x80020000, 0x80800000, | |
50 | 0x80020200, 0x00820200, 0x00820000, 0x80000200, | |
51 | 0x80800200, 0x00800000, 0x00000000, 0x80020000, | |
52 | 0x00020000, 0x80000000, 0x00800200, 0x00020200, | |
53 | 0x80820200, 0x00820000, 0x80000200, 0x00800200, | |
54 | 0x80000000, 0x00000200, 0x00020200, 0x80820000, | |
55 | 0x00000200, 0x80800200, 0x80820000, 0x00000000, | |
56 | 0x00000000, 0x80820200, 0x00800200, 0x80020000, | |
57 | 0x00820200, 0x00020000, 0x80000200, 0x00800200, | |
58 | 0x80820000, 0x00000200, 0x00020200, 0x80800000, | |
59 | 0x80020200, 0x80000000, 0x80800000, 0x00820000, | |
60 | 0x80820200, 0x00020200, 0x00820000, 0x80800200, | |
61 | 0x00800000, 0x80000200, 0x80020000, 0x00000000, | |
62 | 0x00020000, 0x00800000, 0x80800200, 0x00820200, | |
2534dd6e SH |
63 | 0x80000000, 0x80820000, 0x00000200, 0x80020200}, |
64 | { /* nibble 1 */ | |
4ace4afb SH |
65 | 0x10042004, 0x00000000, 0x00042000, 0x10040000, |
66 | 0x10000004, 0x00002004, 0x10002000, 0x00042000, | |
67 | 0x00002000, 0x10040004, 0x00000004, 0x10002000, | |
68 | 0x00040004, 0x10042000, 0x10040000, 0x00000004, | |
69 | 0x00040000, 0x10002004, 0x10040004, 0x00002000, | |
70 | 0x00042004, 0x10000000, 0x00000000, 0x00040004, | |
71 | 0x10002004, 0x00042004, 0x10042000, 0x10000004, | |
72 | 0x10000000, 0x00040000, 0x00002004, 0x10042004, | |
73 | 0x00040004, 0x10042000, 0x10002000, 0x00042004, | |
74 | 0x10042004, 0x00040004, 0x10000004, 0x00000000, | |
75 | 0x10000000, 0x00002004, 0x00040000, 0x10040004, | |
76 | 0x00002000, 0x10000000, 0x00042004, 0x10002004, | |
77 | 0x10042000, 0x00002000, 0x00000000, 0x10000004, | |
78 | 0x00000004, 0x10042004, 0x00042000, 0x10040000, | |
79 | 0x10040004, 0x00040000, 0x00002004, 0x10002000, | |
2534dd6e SH |
80 | 0x10002004, 0x00000004, 0x10040000, 0x00042000}, |
81 | { /* nibble 2 */ | |
4ace4afb SH |
82 | 0x41000000, 0x01010040, 0x00000040, 0x41000040, |
83 | 0x40010000, 0x01000000, 0x41000040, 0x00010040, | |
84 | 0x01000040, 0x00010000, 0x01010000, 0x40000000, | |
85 | 0x41010040, 0x40000040, 0x40000000, 0x41010000, | |
86 | 0x00000000, 0x40010000, 0x01010040, 0x00000040, | |
87 | 0x40000040, 0x41010040, 0x00010000, 0x41000000, | |
88 | 0x41010000, 0x01000040, 0x40010040, 0x01010000, | |
89 | 0x00010040, 0x00000000, 0x01000000, 0x40010040, | |
90 | 0x01010040, 0x00000040, 0x40000000, 0x00010000, | |
91 | 0x40000040, 0x40010000, 0x01010000, 0x41000040, | |
92 | 0x00000000, 0x01010040, 0x00010040, 0x41010000, | |
93 | 0x40010000, 0x01000000, 0x41010040, 0x40000000, | |
94 | 0x40010040, 0x41000000, 0x01000000, 0x41010040, | |
95 | 0x00010000, 0x01000040, 0x41000040, 0x00010040, | |
96 | 0x01000040, 0x00000000, 0x41010000, 0x40000040, | |
2534dd6e SH |
97 | 0x41000000, 0x40010040, 0x00000040, 0x01010000}, |
98 | { /* nibble 3 */ | |
4ace4afb SH |
99 | 0x00100402, 0x04000400, 0x00000002, 0x04100402, |
100 | 0x00000000, 0x04100000, 0x04000402, 0x00100002, | |
101 | 0x04100400, 0x04000002, 0x04000000, 0x00000402, | |
102 | 0x04000002, 0x00100402, 0x00100000, 0x04000000, | |
103 | 0x04100002, 0x00100400, 0x00000400, 0x00000002, | |
104 | 0x00100400, 0x04000402, 0x04100000, 0x00000400, | |
105 | 0x00000402, 0x00000000, 0x00100002, 0x04100400, | |
106 | 0x04000400, 0x04100002, 0x04100402, 0x00100000, | |
107 | 0x04100002, 0x00000402, 0x00100000, 0x04000002, | |
108 | 0x00100400, 0x04000400, 0x00000002, 0x04100000, | |
109 | 0x04000402, 0x00000000, 0x00000400, 0x00100002, | |
110 | 0x00000000, 0x04100002, 0x04100400, 0x00000400, | |
111 | 0x04000000, 0x04100402, 0x00100402, 0x00100000, | |
112 | 0x04100402, 0x00000002, 0x04000400, 0x00100402, | |
113 | 0x00100002, 0x00100400, 0x04100000, 0x04000402, | |
2534dd6e SH |
114 | 0x00000402, 0x04000000, 0x04000002, 0x04100400}, |
115 | { /* nibble 4 */ | |
4ace4afb SH |
116 | 0x02000000, 0x00004000, 0x00000100, 0x02004108, |
117 | 0x02004008, 0x02000100, 0x00004108, 0x02004000, | |
118 | 0x00004000, 0x00000008, 0x02000008, 0x00004100, | |
119 | 0x02000108, 0x02004008, 0x02004100, 0x00000000, | |
120 | 0x00004100, 0x02000000, 0x00004008, 0x00000108, | |
121 | 0x02000100, 0x00004108, 0x00000000, 0x02000008, | |
122 | 0x00000008, 0x02000108, 0x02004108, 0x00004008, | |
123 | 0x02004000, 0x00000100, 0x00000108, 0x02004100, | |
124 | 0x02004100, 0x02000108, 0x00004008, 0x02004000, | |
125 | 0x00004000, 0x00000008, 0x02000008, 0x02000100, | |
126 | 0x02000000, 0x00004100, 0x02004108, 0x00000000, | |
127 | 0x00004108, 0x02000000, 0x00000100, 0x00004008, | |
128 | 0x02000108, 0x00000100, 0x00000000, 0x02004108, | |
129 | 0x02004008, 0x02004100, 0x00000108, 0x00004000, | |
130 | 0x00004100, 0x02004008, 0x02000100, 0x00000108, | |
2534dd6e SH |
131 | 0x00000008, 0x00004108, 0x02004000, 0x02000008}, |
132 | { /* nibble 5 */ | |
4ace4afb SH |
133 | 0x20000010, 0x00080010, 0x00000000, 0x20080800, |
134 | 0x00080010, 0x00000800, 0x20000810, 0x00080000, | |
135 | 0x00000810, 0x20080810, 0x00080800, 0x20000000, | |
136 | 0x20000800, 0x20000010, 0x20080000, 0x00080810, | |
137 | 0x00080000, 0x20000810, 0x20080010, 0x00000000, | |
138 | 0x00000800, 0x00000010, 0x20080800, 0x20080010, | |
139 | 0x20080810, 0x20080000, 0x20000000, 0x00000810, | |
140 | 0x00000010, 0x00080800, 0x00080810, 0x20000800, | |
141 | 0x00000810, 0x20000000, 0x20000800, 0x00080810, | |
142 | 0x20080800, 0x00080010, 0x00000000, 0x20000800, | |
143 | 0x20000000, 0x00000800, 0x20080010, 0x00080000, | |
144 | 0x00080010, 0x20080810, 0x00080800, 0x00000010, | |
145 | 0x20080810, 0x00080800, 0x00080000, 0x20000810, | |
146 | 0x20000010, 0x20080000, 0x00080810, 0x00000000, | |
147 | 0x00000800, 0x20000010, 0x20000810, 0x20080800, | |
2534dd6e SH |
148 | 0x20080000, 0x00000810, 0x00000010, 0x20080010}, |
149 | { /* nibble 6 */ | |
4ace4afb SH |
150 | 0x00001000, 0x00000080, 0x00400080, 0x00400001, |
151 | 0x00401081, 0x00001001, 0x00001080, 0x00000000, | |
152 | 0x00400000, 0x00400081, 0x00000081, 0x00401000, | |
153 | 0x00000001, 0x00401080, 0x00401000, 0x00000081, | |
154 | 0x00400081, 0x00001000, 0x00001001, 0x00401081, | |
155 | 0x00000000, 0x00400080, 0x00400001, 0x00001080, | |
156 | 0x00401001, 0x00001081, 0x00401080, 0x00000001, | |
157 | 0x00001081, 0x00401001, 0x00000080, 0x00400000, | |
158 | 0x00001081, 0x00401000, 0x00401001, 0x00000081, | |
159 | 0x00001000, 0x00000080, 0x00400000, 0x00401001, | |
160 | 0x00400081, 0x00001081, 0x00001080, 0x00000000, | |
161 | 0x00000080, 0x00400001, 0x00000001, 0x00400080, | |
162 | 0x00000000, 0x00400081, 0x00400080, 0x00001080, | |
163 | 0x00000081, 0x00001000, 0x00401081, 0x00400000, | |
164 | 0x00401080, 0x00000001, 0x00001001, 0x00401081, | |
2534dd6e SH |
165 | 0x00400001, 0x00401080, 0x00401000, 0x00001001}, |
166 | { /* nibble 7 */ | |
4ace4afb SH |
167 | 0x08200020, 0x08208000, 0x00008020, 0x00000000, |
168 | 0x08008000, 0x00200020, 0x08200000, 0x08208020, | |
169 | 0x00000020, 0x08000000, 0x00208000, 0x00008020, | |
170 | 0x00208020, 0x08008020, 0x08000020, 0x08200000, | |
171 | 0x00008000, 0x00208020, 0x00200020, 0x08008000, | |
172 | 0x08208020, 0x08000020, 0x00000000, 0x00208000, | |
173 | 0x08000000, 0x00200000, 0x08008020, 0x08200020, | |
174 | 0x00200000, 0x00008000, 0x08208000, 0x00000020, | |
175 | 0x00200000, 0x00008000, 0x08000020, 0x08208020, | |
176 | 0x00008020, 0x08000000, 0x00000000, 0x00208000, | |
177 | 0x08200020, 0x08008020, 0x08008000, 0x00200020, | |
178 | 0x08208000, 0x00000020, 0x00200020, 0x08008000, | |
179 | 0x08208020, 0x00200000, 0x08200000, 0x08000020, | |
180 | 0x00208000, 0x00008020, 0x08008020, 0x08200000, | |
181 | 0x00000020, 0x08208000, 0x00208020, 0x00000000, | |
2534dd6e SH |
182 | 0x08000000, 0x08200020, 0x00008000, 0x00208020} |
183 | }; | |
4ace4afb | 184 | static unsigned long skb[8][64]={ |
2534dd6e | 185 | { /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ |
4ace4afb SH |
186 | 0x00000000,0x00000010,0x20000000,0x20000010, |
187 | 0x00010000,0x00010010,0x20010000,0x20010010, | |
188 | 0x00000800,0x00000810,0x20000800,0x20000810, | |
189 | 0x00010800,0x00010810,0x20010800,0x20010810, | |
190 | 0x00000020,0x00000030,0x20000020,0x20000030, | |
191 | 0x00010020,0x00010030,0x20010020,0x20010030, | |
192 | 0x00000820,0x00000830,0x20000820,0x20000830, | |
193 | 0x00010820,0x00010830,0x20010820,0x20010830, | |
194 | 0x00080000,0x00080010,0x20080000,0x20080010, | |
195 | 0x00090000,0x00090010,0x20090000,0x20090010, | |
196 | 0x00080800,0x00080810,0x20080800,0x20080810, | |
197 | 0x00090800,0x00090810,0x20090800,0x20090810, | |
198 | 0x00080020,0x00080030,0x20080020,0x20080030, | |
199 | 0x00090020,0x00090030,0x20090020,0x20090030, | |
200 | 0x00080820,0x00080830,0x20080820,0x20080830, | |
2534dd6e SH |
201 | 0x00090820,0x00090830,0x20090820,0x20090830}, |
202 | { /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */ | |
4ace4afb SH |
203 | 0x00000000,0x02000000,0x00002000,0x02002000, |
204 | 0x00200000,0x02200000,0x00202000,0x02202000, | |
205 | 0x00000004,0x02000004,0x00002004,0x02002004, | |
206 | 0x00200004,0x02200004,0x00202004,0x02202004, | |
207 | 0x00000400,0x02000400,0x00002400,0x02002400, | |
208 | 0x00200400,0x02200400,0x00202400,0x02202400, | |
209 | 0x00000404,0x02000404,0x00002404,0x02002404, | |
210 | 0x00200404,0x02200404,0x00202404,0x02202404, | |
211 | 0x10000000,0x12000000,0x10002000,0x12002000, | |
212 | 0x10200000,0x12200000,0x10202000,0x12202000, | |
213 | 0x10000004,0x12000004,0x10002004,0x12002004, | |
214 | 0x10200004,0x12200004,0x10202004,0x12202004, | |
215 | 0x10000400,0x12000400,0x10002400,0x12002400, | |
216 | 0x10200400,0x12200400,0x10202400,0x12202400, | |
217 | 0x10000404,0x12000404,0x10002404,0x12002404, | |
2534dd6e SH |
218 | 0x10200404,0x12200404,0x10202404,0x12202404}, |
219 | { /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */ | |
4ace4afb SH |
220 | 0x00000000,0x00000001,0x00040000,0x00040001, |
221 | 0x01000000,0x01000001,0x01040000,0x01040001, | |
222 | 0x00000002,0x00000003,0x00040002,0x00040003, | |
223 | 0x01000002,0x01000003,0x01040002,0x01040003, | |
224 | 0x00000200,0x00000201,0x00040200,0x00040201, | |
225 | 0x01000200,0x01000201,0x01040200,0x01040201, | |
226 | 0x00000202,0x00000203,0x00040202,0x00040203, | |
227 | 0x01000202,0x01000203,0x01040202,0x01040203, | |
228 | 0x08000000,0x08000001,0x08040000,0x08040001, | |
229 | 0x09000000,0x09000001,0x09040000,0x09040001, | |
230 | 0x08000002,0x08000003,0x08040002,0x08040003, | |
231 | 0x09000002,0x09000003,0x09040002,0x09040003, | |
232 | 0x08000200,0x08000201,0x08040200,0x08040201, | |
233 | 0x09000200,0x09000201,0x09040200,0x09040201, | |
234 | 0x08000202,0x08000203,0x08040202,0x08040203, | |
2534dd6e SH |
235 | 0x09000202,0x09000203,0x09040202,0x09040203}, |
236 | { /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */ | |
4ace4afb SH |
237 | 0x00000000,0x00100000,0x00000100,0x00100100, |
238 | 0x00000008,0x00100008,0x00000108,0x00100108, | |
239 | 0x00001000,0x00101000,0x00001100,0x00101100, | |
240 | 0x00001008,0x00101008,0x00001108,0x00101108, | |
241 | 0x04000000,0x04100000,0x04000100,0x04100100, | |
242 | 0x04000008,0x04100008,0x04000108,0x04100108, | |
243 | 0x04001000,0x04101000,0x04001100,0x04101100, | |
244 | 0x04001008,0x04101008,0x04001108,0x04101108, | |
245 | 0x00020000,0x00120000,0x00020100,0x00120100, | |
246 | 0x00020008,0x00120008,0x00020108,0x00120108, | |
247 | 0x00021000,0x00121000,0x00021100,0x00121100, | |
248 | 0x00021008,0x00121008,0x00021108,0x00121108, | |
249 | 0x04020000,0x04120000,0x04020100,0x04120100, | |
250 | 0x04020008,0x04120008,0x04020108,0x04120108, | |
251 | 0x04021000,0x04121000,0x04021100,0x04121100, | |
2534dd6e SH |
252 | 0x04021008,0x04121008,0x04021108,0x04121108}, |
253 | { /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ | |
4ace4afb SH |
254 | 0x00000000,0x10000000,0x00010000,0x10010000, |
255 | 0x00000004,0x10000004,0x00010004,0x10010004, | |
256 | 0x20000000,0x30000000,0x20010000,0x30010000, | |
257 | 0x20000004,0x30000004,0x20010004,0x30010004, | |
258 | 0x00100000,0x10100000,0x00110000,0x10110000, | |
259 | 0x00100004,0x10100004,0x00110004,0x10110004, | |
260 | 0x20100000,0x30100000,0x20110000,0x30110000, | |
261 | 0x20100004,0x30100004,0x20110004,0x30110004, | |
262 | 0x00001000,0x10001000,0x00011000,0x10011000, | |
263 | 0x00001004,0x10001004,0x00011004,0x10011004, | |
264 | 0x20001000,0x30001000,0x20011000,0x30011000, | |
265 | 0x20001004,0x30001004,0x20011004,0x30011004, | |
266 | 0x00101000,0x10101000,0x00111000,0x10111000, | |
267 | 0x00101004,0x10101004,0x00111004,0x10111004, | |
268 | 0x20101000,0x30101000,0x20111000,0x30111000, | |
2534dd6e SH |
269 | 0x20101004,0x30101004,0x20111004,0x30111004}, |
270 | { /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */ | |
4ace4afb SH |
271 | 0x00000000,0x08000000,0x00000008,0x08000008, |
272 | 0x00000400,0x08000400,0x00000408,0x08000408, | |
273 | 0x00020000,0x08020000,0x00020008,0x08020008, | |
274 | 0x00020400,0x08020400,0x00020408,0x08020408, | |
275 | 0x00000001,0x08000001,0x00000009,0x08000009, | |
276 | 0x00000401,0x08000401,0x00000409,0x08000409, | |
277 | 0x00020001,0x08020001,0x00020009,0x08020009, | |
278 | 0x00020401,0x08020401,0x00020409,0x08020409, | |
279 | 0x02000000,0x0A000000,0x02000008,0x0A000008, | |
280 | 0x02000400,0x0A000400,0x02000408,0x0A000408, | |
281 | 0x02020000,0x0A020000,0x02020008,0x0A020008, | |
282 | 0x02020400,0x0A020400,0x02020408,0x0A020408, | |
283 | 0x02000001,0x0A000001,0x02000009,0x0A000009, | |
284 | 0x02000401,0x0A000401,0x02000409,0x0A000409, | |
285 | 0x02020001,0x0A020001,0x02020009,0x0A020009, | |
2534dd6e SH |
286 | 0x02020401,0x0A020401,0x02020409,0x0A020409}, |
287 | { /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */ | |
4ace4afb SH |
288 | 0x00000000,0x00000100,0x00080000,0x00080100, |
289 | 0x01000000,0x01000100,0x01080000,0x01080100, | |
290 | 0x00000010,0x00000110,0x00080010,0x00080110, | |
291 | 0x01000010,0x01000110,0x01080010,0x01080110, | |
292 | 0x00200000,0x00200100,0x00280000,0x00280100, | |
293 | 0x01200000,0x01200100,0x01280000,0x01280100, | |
294 | 0x00200010,0x00200110,0x00280010,0x00280110, | |
295 | 0x01200010,0x01200110,0x01280010,0x01280110, | |
296 | 0x00000200,0x00000300,0x00080200,0x00080300, | |
297 | 0x01000200,0x01000300,0x01080200,0x01080300, | |
298 | 0x00000210,0x00000310,0x00080210,0x00080310, | |
299 | 0x01000210,0x01000310,0x01080210,0x01080310, | |
300 | 0x00200200,0x00200300,0x00280200,0x00280300, | |
301 | 0x01200200,0x01200300,0x01280200,0x01280300, | |
302 | 0x00200210,0x00200310,0x00280210,0x00280310, | |
2534dd6e SH |
303 | 0x01200210,0x01200310,0x01280210,0x01280310}, |
304 | { /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */ | |
4ace4afb SH |
305 | 0x00000000,0x04000000,0x00040000,0x04040000, |
306 | 0x00000002,0x04000002,0x00040002,0x04040002, | |
307 | 0x00002000,0x04002000,0x00042000,0x04042000, | |
308 | 0x00002002,0x04002002,0x00042002,0x04042002, | |
309 | 0x00000020,0x04000020,0x00040020,0x04040020, | |
310 | 0x00000022,0x04000022,0x00040022,0x04040022, | |
311 | 0x00002020,0x04002020,0x00042020,0x04042020, | |
312 | 0x00002022,0x04002022,0x00042022,0x04042022, | |
313 | 0x00000800,0x04000800,0x00040800,0x04040800, | |
314 | 0x00000802,0x04000802,0x00040802,0x04040802, | |
315 | 0x00002800,0x04002800,0x00042800,0x04042800, | |
316 | 0x00002802,0x04002802,0x00042802,0x04042802, | |
317 | 0x00000820,0x04000820,0x00040820,0x04040820, | |
318 | 0x00000822,0x04000822,0x00040822,0x04040822, | |
319 | 0x00002820,0x04002820,0x00042820,0x04042820, | |
2534dd6e | 320 | 0x00002822,0x04002822,0x00042822,0x04042822} |
4ace4afb SH |
321 | }; |
322 | ||
323 | /* See ecb_encrypt.c for a pseudo description of these macros. */ | |
324 | #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ | |
325 | (b)^=(t),\ | |
326 | (a)^=((t)<<(n))) | |
327 | ||
328 | #define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\ | |
329 | (a)=(a)^(t)^(t>>(16-(n))))\ | |
330 | ||
331 | static char shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0}; | |
332 | ||
333 | static int body( | |
334 | unsigned long *out0, | |
335 | unsigned long *out1, | |
336 | des_key_schedule ks, | |
337 | unsigned long Eswap0, | |
338 | unsigned long Eswap1); | |
339 | ||
340 | static int | |
341 | des_set_key(des_cblock *key, des_key_schedule schedule) | |
342 | { | |
343 | register unsigned long c,d,t,s; | |
344 | register unsigned char *in; | |
345 | register unsigned long *k; | |
346 | register int i; | |
347 | ||
348 | k=(unsigned long *)schedule; | |
349 | in=(unsigned char *)key; | |
350 | ||
351 | c2l(in,c); | |
352 | c2l(in,d); | |
353 | ||
354 | /* I now do it in 47 simple operations :-) | |
355 | * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov) | |
356 | * for the inspiration. :-) */ | |
357 | PERM_OP (d,c,t,4,0x0f0f0f0f); | |
358 | HPERM_OP(c,t,-2,0xcccc0000); | |
359 | HPERM_OP(d,t,-2,0xcccc0000); | |
360 | PERM_OP (d,c,t,1,0x55555555); | |
361 | PERM_OP (c,d,t,8,0x00ff00ff); | |
362 | PERM_OP (d,c,t,1,0x55555555); | |
363 | d= (((d&0x000000ff)<<16)| (d&0x0000ff00) | | |
364 | ((d&0x00ff0000)>>16)|((c&0xf0000000)>>4)); | |
365 | c&=0x0fffffff; | |
366 | ||
367 | for (i=0; i<ITERATIONS; i++) | |
368 | { | |
369 | if (shifts2[i]) | |
370 | { c=((c>>2)|(c<<26)); d=((d>>2)|(d<<26)); } | |
371 | else | |
372 | { c=((c>>1)|(c<<27)); d=((d>>1)|(d<<27)); } | |
373 | c&=0x0fffffff; | |
374 | d&=0x0fffffff; | |
375 | /* could be a few less shifts but I am to lazy at this | |
376 | * point in time to investigate */ | |
377 | s= skb[0][ (c )&0x3f ]| | |
378 | skb[1][((c>> 6)&0x03)|((c>> 7)&0x3c)]| | |
379 | skb[2][((c>>13)&0x0f)|((c>>14)&0x30)]| | |
380 | skb[3][((c>>20)&0x01)|((c>>21)&0x06) | | |
381 | ((c>>22)&0x38)]; | |
382 | t= skb[4][ (d )&0x3f ]| | |
383 | skb[5][((d>> 7)&0x03)|((d>> 8)&0x3c)]| | |
384 | skb[6][ (d>>15)&0x3f ]| | |
385 | skb[7][((d>>21)&0x0f)|((d>>22)&0x30)]; | |
386 | ||
387 | /* table contained 0213 4657 */ | |
388 | *(k++)=((t<<16)|(s&0x0000ffff))&0xffffffff; | |
389 | s= ((s>>16)|(t&0xffff0000)); | |
390 | ||
391 | s=(s<<4)|(s>>28); | |
392 | *(k++)=s&0xffffffff; | |
393 | } | |
394 | return(0); | |
395 | } | |
396 | ||
397 | /****************************************************************** | |
398 | * modified stuff for crypt. | |
399 | ******************************************************************/ | |
400 | ||
401 | /* The changes to this macro may help or hinder, depending on the | |
402 | * compiler and the achitecture. gcc2 always seems to do well :-). | |
403 | * Inspired by Dana How <how@isl.stanford.edu> | |
404 | * DO NOT use the alternative version on machines with 8 byte longs. | |
405 | */ | |
406 | #ifdef ALT_ECB | |
407 | #define D_ENCRYPT(L,R,S) \ | |
408 | v=(R^(R>>16)); \ | |
409 | u=(v&E0); \ | |
410 | v=(v&E1); \ | |
411 | u=((u^(u<<16))^R^s[S ])<<2; \ | |
412 | t=(v^(v<<16))^R^s[S+1]; \ | |
413 | t=(t>>2)|(t<<30); \ | |
414 | L^= \ | |
415 | *(unsigned long *)(des_SP+0x0100+((t )&0xfc))+ \ | |
416 | *(unsigned long *)(des_SP+0x0300+((t>> 8)&0xfc))+ \ | |
417 | *(unsigned long *)(des_SP+0x0500+((t>>16)&0xfc))+ \ | |
418 | *(unsigned long *)(des_SP+0x0700+((t>>24)&0xfc))+ \ | |
419 | *(unsigned long *)(des_SP+ ((u )&0xfc))+ \ | |
420 | *(unsigned long *)(des_SP+0x0200+((u>> 8)&0xfc))+ \ | |
421 | *(unsigned long *)(des_SP+0x0400+((u>>16)&0xfc))+ \ | |
422 | *(unsigned long *)(des_SP+0x0600+((u>>24)&0xfc)); | |
423 | #else /* original version */ | |
424 | #define D_ENCRYPT(L,R,S) \ | |
425 | v=(R^(R>>16)); \ | |
426 | u=(v&E0); \ | |
427 | v=(v&E1); \ | |
428 | u=(u^(u<<16))^R^s[S ]; \ | |
429 | t=(v^(v<<16))^R^s[S+1]; \ | |
430 | t=(t>>4)|(t<<28); \ | |
431 | L^= SPtrans[1][(t )&0x3f]| \ | |
432 | SPtrans[3][(t>> 8)&0x3f]| \ | |
433 | SPtrans[5][(t>>16)&0x3f]| \ | |
434 | SPtrans[7][(t>>24)&0x3f]| \ | |
435 | SPtrans[0][(u )&0x3f]| \ | |
436 | SPtrans[2][(u>> 8)&0x3f]| \ | |
437 | SPtrans[4][(u>>16)&0x3f]| \ | |
438 | SPtrans[6][(u>>24)&0x3f]; | |
439 | #endif | |
440 | ||
441 | unsigned char con_salt[128]={ | |
442 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
443 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
444 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
445 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
446 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
447 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01, | |
448 | 0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09, | |
449 | 0x0A,0x0B,0x05,0x06,0x07,0x08,0x09,0x0A, | |
450 | 0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12, | |
451 | 0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A, | |
452 | 0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22, | |
453 | 0x23,0x24,0x25,0x20,0x21,0x22,0x23,0x24, | |
454 | 0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C, | |
455 | 0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34, | |
456 | 0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C, | |
457 | 0x3D,0x3E,0x3F,0x00,0x00,0x00,0x00,0x00, | |
458 | }; | |
459 | ||
460 | unsigned char cov_2char[64]={ | |
461 | 0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35, | |
462 | 0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44, | |
463 | 0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C, | |
464 | 0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54, | |
465 | 0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62, | |
466 | 0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A, | |
467 | 0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72, | |
468 | 0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A | |
469 | }; | |
470 | ||
471 | char * | |
472 | des_fcrypt(const char *buf, const char *salt, char *buff) | |
473 | { | |
474 | unsigned int i,j,x,y; | |
2534dd6e | 475 | unsigned long Eswap0,Eswap1; |
4ace4afb SH |
476 | unsigned long out[2],ll; |
477 | des_cblock key; | |
478 | des_key_schedule ks; | |
479 | unsigned char bb[9]; | |
480 | unsigned char *b=bb; | |
481 | unsigned char c,u; | |
482 | ||
483 | /* eay 25/08/92 | |
484 | * If you call crypt("pwd","*") as often happens when you | |
485 | * have * as the pwd field in /etc/passwd, the function | |
486 | * returns *\0XXXXXXXXX | |
487 | * The \0 makes the string look like * so the pwd "*" would | |
488 | * crypt to "*". This was found when replacing the crypt in | |
489 | * our shared libraries. People found that the disbled | |
490 | * accounts effectivly had no passwd :-(. */ | |
2534dd6e | 491 | x=buff[0]=((salt[0] == '\0')?(char)'A':salt[0]); |
4ace4afb | 492 | Eswap0=con_salt[x]; |
2534dd6e | 493 | x=buff[1]=((salt[1] == '\0')?(char)'A':salt[1]); |
4ace4afb SH |
494 | Eswap1=con_salt[x]<<4; |
495 | ||
496 | for (i=0; i<8; i++) | |
497 | { | |
498 | c= *(buf++); | |
499 | if (!c) break; | |
2534dd6e | 500 | key[i]=(char)(c<<1); |
4ace4afb SH |
501 | } |
502 | for (; i<8; i++) | |
503 | key[i]=0; | |
504 | ||
505 | des_set_key((des_cblock *)(key),ks); | |
506 | body(&out[0],&out[1],ks,Eswap0,Eswap1); | |
507 | ||
508 | ll=out[0]; l2c(ll,b); | |
509 | ll=out[1]; l2c(ll,b); | |
510 | y=0; | |
511 | u=0x80; | |
512 | bb[8]=0; | |
513 | for (i=2; i<13; i++) | |
514 | { | |
515 | c=0; | |
516 | for (j=0; j<6; j++) | |
517 | { | |
518 | c<<=1; | |
519 | if (bb[y] & u) c|=1; | |
520 | u>>=1; | |
521 | if (!u) | |
522 | { | |
523 | y++; | |
524 | u=0x80; | |
525 | } | |
526 | } | |
527 | buff[i]=cov_2char[c]; | |
528 | } | |
529 | buff[13]='\0'; | |
530 | return buff; | |
531 | } | |
532 | ||
533 | static int | |
534 | body( unsigned long *out0, | |
535 | unsigned long *out1, | |
536 | des_key_schedule ks, | |
537 | unsigned long Eswap0, | |
538 | unsigned long Eswap1) | |
539 | { | |
540 | register unsigned long l,r,t,u,v; | |
541 | #ifdef ALT_ECB | |
542 | register unsigned char *des_SP=(unsigned char *)SPtrans; | |
543 | #endif | |
544 | register unsigned long *s; | |
545 | register int i,j; | |
546 | register unsigned long E0,E1; | |
547 | ||
548 | l=0; | |
549 | r=0; | |
550 | ||
551 | s=(unsigned long *)ks; | |
552 | E0=Eswap0; | |
553 | E1=Eswap1; | |
554 | ||
555 | for (j=0; j<25; j++) | |
556 | { | |
557 | for (i=0; i<(ITERATIONS*2); i+=4) | |
558 | { | |
559 | D_ENCRYPT(l,r, i); /* 1 */ | |
560 | D_ENCRYPT(r,l, i+2); /* 2 */ | |
561 | } | |
562 | t=l; | |
563 | l=r; | |
564 | r=t; | |
565 | } | |
566 | t=r; | |
567 | r=(l>>1)|(l<<31); | |
568 | l=(t>>1)|(t<<31); | |
569 | /* clear the top bits on machines with 8byte longs */ | |
570 | l&=0xffffffff; | |
571 | r&=0xffffffff; | |
572 | ||
573 | PERM_OP(r,l,t, 1,0x55555555); | |
574 | PERM_OP(l,r,t, 8,0x00ff00ff); | |
575 | PERM_OP(r,l,t, 2,0x33333333); | |
576 | PERM_OP(l,r,t,16,0x0000ffff); | |
577 | PERM_OP(r,l,t, 4,0x0f0f0f0f); | |
578 | ||
579 | *out0=l; | |
580 | *out1=r; | |
581 | return(0); | |
582 | } | |
583 |