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comparison perl-5.22.2/win32/fcrypt.c @ 8045:a16537d2fe07
<xfix> tar xf perl-5.22.2.tar.gz # Ah, whatever, I\'m doing it anyway
author | HackBot |
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date | Sat, 14 May 2016 14:54:38 +0000 |
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1 /* fcrypt.c */ | |
2 /* Copyright (C) 1993 Eric Young - see README for more details */ | |
3 #include <stdio.h> | |
4 #include <errno.h> | |
5 | |
6 /* Eric Young. | |
7 * This version of crypt has been developed from my MIT compatable | |
8 * DES library. | |
9 * The library is available at pub/DES at ftp.psy.uq.oz.au | |
10 * eay@psych.psy.uq.oz.au | |
11 */ | |
12 | |
13 typedef unsigned char des_cblock[8]; | |
14 | |
15 typedef struct des_ks_struct | |
16 { | |
17 union { | |
18 des_cblock _; | |
19 /* make sure things are correct size on machines with | |
20 * 8 byte longs */ | |
21 unsigned long pad[2]; | |
22 } ks; | |
23 #define _ ks._ | |
24 } des_key_schedule[16]; | |
25 | |
26 #define DES_KEY_SZ (sizeof(des_cblock)) | |
27 #define DES_ENCRYPT 1 | |
28 #define DES_DECRYPT 0 | |
29 | |
30 #define ITERATIONS 16 | |
31 #define HALF_ITERATIONS 8 | |
32 | |
33 #define c2l(c,l) (l =((unsigned long)(*((c)++))) , \ | |
34 l|=((unsigned long)(*((c)++)))<< 8, \ | |
35 l|=((unsigned long)(*((c)++)))<<16, \ | |
36 l|=((unsigned long)(*((c)++)))<<24) | |
37 | |
38 #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ | |
39 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ | |
40 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ | |
41 *((c)++)=(unsigned char)(((l)>>24)&0xff)) | |
42 | |
43 static const unsigned long SPtrans[8][64]={ | |
44 { /* nibble 0 */ | |
45 0x00820200, 0x00020000, 0x80800000, 0x80820200, | |
46 0x00800000, 0x80020200, 0x80020000, 0x80800000, | |
47 0x80020200, 0x00820200, 0x00820000, 0x80000200, | |
48 0x80800200, 0x00800000, 0x00000000, 0x80020000, | |
49 0x00020000, 0x80000000, 0x00800200, 0x00020200, | |
50 0x80820200, 0x00820000, 0x80000200, 0x00800200, | |
51 0x80000000, 0x00000200, 0x00020200, 0x80820000, | |
52 0x00000200, 0x80800200, 0x80820000, 0x00000000, | |
53 0x00000000, 0x80820200, 0x00800200, 0x80020000, | |
54 0x00820200, 0x00020000, 0x80000200, 0x00800200, | |
55 0x80820000, 0x00000200, 0x00020200, 0x80800000, | |
56 0x80020200, 0x80000000, 0x80800000, 0x00820000, | |
57 0x80820200, 0x00020200, 0x00820000, 0x80800200, | |
58 0x00800000, 0x80000200, 0x80020000, 0x00000000, | |
59 0x00020000, 0x00800000, 0x80800200, 0x00820200, | |
60 0x80000000, 0x80820000, 0x00000200, 0x80020200}, | |
61 { /* nibble 1 */ | |
62 0x10042004, 0x00000000, 0x00042000, 0x10040000, | |
63 0x10000004, 0x00002004, 0x10002000, 0x00042000, | |
64 0x00002000, 0x10040004, 0x00000004, 0x10002000, | |
65 0x00040004, 0x10042000, 0x10040000, 0x00000004, | |
66 0x00040000, 0x10002004, 0x10040004, 0x00002000, | |
67 0x00042004, 0x10000000, 0x00000000, 0x00040004, | |
68 0x10002004, 0x00042004, 0x10042000, 0x10000004, | |
69 0x10000000, 0x00040000, 0x00002004, 0x10042004, | |
70 0x00040004, 0x10042000, 0x10002000, 0x00042004, | |
71 0x10042004, 0x00040004, 0x10000004, 0x00000000, | |
72 0x10000000, 0x00002004, 0x00040000, 0x10040004, | |
73 0x00002000, 0x10000000, 0x00042004, 0x10002004, | |
74 0x10042000, 0x00002000, 0x00000000, 0x10000004, | |
75 0x00000004, 0x10042004, 0x00042000, 0x10040000, | |
76 0x10040004, 0x00040000, 0x00002004, 0x10002000, | |
77 0x10002004, 0x00000004, 0x10040000, 0x00042000}, | |
78 { /* nibble 2 */ | |
79 0x41000000, 0x01010040, 0x00000040, 0x41000040, | |
80 0x40010000, 0x01000000, 0x41000040, 0x00010040, | |
81 0x01000040, 0x00010000, 0x01010000, 0x40000000, | |
82 0x41010040, 0x40000040, 0x40000000, 0x41010000, | |
83 0x00000000, 0x40010000, 0x01010040, 0x00000040, | |
84 0x40000040, 0x41010040, 0x00010000, 0x41000000, | |
85 0x41010000, 0x01000040, 0x40010040, 0x01010000, | |
86 0x00010040, 0x00000000, 0x01000000, 0x40010040, | |
87 0x01010040, 0x00000040, 0x40000000, 0x00010000, | |
88 0x40000040, 0x40010000, 0x01010000, 0x41000040, | |
89 0x00000000, 0x01010040, 0x00010040, 0x41010000, | |
90 0x40010000, 0x01000000, 0x41010040, 0x40000000, | |
91 0x40010040, 0x41000000, 0x01000000, 0x41010040, | |
92 0x00010000, 0x01000040, 0x41000040, 0x00010040, | |
93 0x01000040, 0x00000000, 0x41010000, 0x40000040, | |
94 0x41000000, 0x40010040, 0x00000040, 0x01010000}, | |
95 { /* nibble 3 */ | |
96 0x00100402, 0x04000400, 0x00000002, 0x04100402, | |
97 0x00000000, 0x04100000, 0x04000402, 0x00100002, | |
98 0x04100400, 0x04000002, 0x04000000, 0x00000402, | |
99 0x04000002, 0x00100402, 0x00100000, 0x04000000, | |
100 0x04100002, 0x00100400, 0x00000400, 0x00000002, | |
101 0x00100400, 0x04000402, 0x04100000, 0x00000400, | |
102 0x00000402, 0x00000000, 0x00100002, 0x04100400, | |
103 0x04000400, 0x04100002, 0x04100402, 0x00100000, | |
104 0x04100002, 0x00000402, 0x00100000, 0x04000002, | |
105 0x00100400, 0x04000400, 0x00000002, 0x04100000, | |
106 0x04000402, 0x00000000, 0x00000400, 0x00100002, | |
107 0x00000000, 0x04100002, 0x04100400, 0x00000400, | |
108 0x04000000, 0x04100402, 0x00100402, 0x00100000, | |
109 0x04100402, 0x00000002, 0x04000400, 0x00100402, | |
110 0x00100002, 0x00100400, 0x04100000, 0x04000402, | |
111 0x00000402, 0x04000000, 0x04000002, 0x04100400}, | |
112 { /* nibble 4 */ | |
113 0x02000000, 0x00004000, 0x00000100, 0x02004108, | |
114 0x02004008, 0x02000100, 0x00004108, 0x02004000, | |
115 0x00004000, 0x00000008, 0x02000008, 0x00004100, | |
116 0x02000108, 0x02004008, 0x02004100, 0x00000000, | |
117 0x00004100, 0x02000000, 0x00004008, 0x00000108, | |
118 0x02000100, 0x00004108, 0x00000000, 0x02000008, | |
119 0x00000008, 0x02000108, 0x02004108, 0x00004008, | |
120 0x02004000, 0x00000100, 0x00000108, 0x02004100, | |
121 0x02004100, 0x02000108, 0x00004008, 0x02004000, | |
122 0x00004000, 0x00000008, 0x02000008, 0x02000100, | |
123 0x02000000, 0x00004100, 0x02004108, 0x00000000, | |
124 0x00004108, 0x02000000, 0x00000100, 0x00004008, | |
125 0x02000108, 0x00000100, 0x00000000, 0x02004108, | |
126 0x02004008, 0x02004100, 0x00000108, 0x00004000, | |
127 0x00004100, 0x02004008, 0x02000100, 0x00000108, | |
128 0x00000008, 0x00004108, 0x02004000, 0x02000008}, | |
129 { /* nibble 5 */ | |
130 0x20000010, 0x00080010, 0x00000000, 0x20080800, | |
131 0x00080010, 0x00000800, 0x20000810, 0x00080000, | |
132 0x00000810, 0x20080810, 0x00080800, 0x20000000, | |
133 0x20000800, 0x20000010, 0x20080000, 0x00080810, | |
134 0x00080000, 0x20000810, 0x20080010, 0x00000000, | |
135 0x00000800, 0x00000010, 0x20080800, 0x20080010, | |
136 0x20080810, 0x20080000, 0x20000000, 0x00000810, | |
137 0x00000010, 0x00080800, 0x00080810, 0x20000800, | |
138 0x00000810, 0x20000000, 0x20000800, 0x00080810, | |
139 0x20080800, 0x00080010, 0x00000000, 0x20000800, | |
140 0x20000000, 0x00000800, 0x20080010, 0x00080000, | |
141 0x00080010, 0x20080810, 0x00080800, 0x00000010, | |
142 0x20080810, 0x00080800, 0x00080000, 0x20000810, | |
143 0x20000010, 0x20080000, 0x00080810, 0x00000000, | |
144 0x00000800, 0x20000010, 0x20000810, 0x20080800, | |
145 0x20080000, 0x00000810, 0x00000010, 0x20080010}, | |
146 { /* nibble 6 */ | |
147 0x00001000, 0x00000080, 0x00400080, 0x00400001, | |
148 0x00401081, 0x00001001, 0x00001080, 0x00000000, | |
149 0x00400000, 0x00400081, 0x00000081, 0x00401000, | |
150 0x00000001, 0x00401080, 0x00401000, 0x00000081, | |
151 0x00400081, 0x00001000, 0x00001001, 0x00401081, | |
152 0x00000000, 0x00400080, 0x00400001, 0x00001080, | |
153 0x00401001, 0x00001081, 0x00401080, 0x00000001, | |
154 0x00001081, 0x00401001, 0x00000080, 0x00400000, | |
155 0x00001081, 0x00401000, 0x00401001, 0x00000081, | |
156 0x00001000, 0x00000080, 0x00400000, 0x00401001, | |
157 0x00400081, 0x00001081, 0x00001080, 0x00000000, | |
158 0x00000080, 0x00400001, 0x00000001, 0x00400080, | |
159 0x00000000, 0x00400081, 0x00400080, 0x00001080, | |
160 0x00000081, 0x00001000, 0x00401081, 0x00400000, | |
161 0x00401080, 0x00000001, 0x00001001, 0x00401081, | |
162 0x00400001, 0x00401080, 0x00401000, 0x00001001}, | |
163 { /* nibble 7 */ | |
164 0x08200020, 0x08208000, 0x00008020, 0x00000000, | |
165 0x08008000, 0x00200020, 0x08200000, 0x08208020, | |
166 0x00000020, 0x08000000, 0x00208000, 0x00008020, | |
167 0x00208020, 0x08008020, 0x08000020, 0x08200000, | |
168 0x00008000, 0x00208020, 0x00200020, 0x08008000, | |
169 0x08208020, 0x08000020, 0x00000000, 0x00208000, | |
170 0x08000000, 0x00200000, 0x08008020, 0x08200020, | |
171 0x00200000, 0x00008000, 0x08208000, 0x00000020, | |
172 0x00200000, 0x00008000, 0x08000020, 0x08208020, | |
173 0x00008020, 0x08000000, 0x00000000, 0x00208000, | |
174 0x08200020, 0x08008020, 0x08008000, 0x00200020, | |
175 0x08208000, 0x00000020, 0x00200020, 0x08008000, | |
176 0x08208020, 0x00200000, 0x08200000, 0x08000020, | |
177 0x00208000, 0x00008020, 0x08008020, 0x08200000, | |
178 0x00000020, 0x08208000, 0x00208020, 0x00000000, | |
179 0x08000000, 0x08200020, 0x00008000, 0x00208020} | |
180 }; | |
181 static const unsigned long skb[8][64]={ | |
182 { /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ | |
183 0x00000000,0x00000010,0x20000000,0x20000010, | |
184 0x00010000,0x00010010,0x20010000,0x20010010, | |
185 0x00000800,0x00000810,0x20000800,0x20000810, | |
186 0x00010800,0x00010810,0x20010800,0x20010810, | |
187 0x00000020,0x00000030,0x20000020,0x20000030, | |
188 0x00010020,0x00010030,0x20010020,0x20010030, | |
189 0x00000820,0x00000830,0x20000820,0x20000830, | |
190 0x00010820,0x00010830,0x20010820,0x20010830, | |
191 0x00080000,0x00080010,0x20080000,0x20080010, | |
192 0x00090000,0x00090010,0x20090000,0x20090010, | |
193 0x00080800,0x00080810,0x20080800,0x20080810, | |
194 0x00090800,0x00090810,0x20090800,0x20090810, | |
195 0x00080020,0x00080030,0x20080020,0x20080030, | |
196 0x00090020,0x00090030,0x20090020,0x20090030, | |
197 0x00080820,0x00080830,0x20080820,0x20080830, | |
198 0x00090820,0x00090830,0x20090820,0x20090830}, | |
199 { /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */ | |
200 0x00000000,0x02000000,0x00002000,0x02002000, | |
201 0x00200000,0x02200000,0x00202000,0x02202000, | |
202 0x00000004,0x02000004,0x00002004,0x02002004, | |
203 0x00200004,0x02200004,0x00202004,0x02202004, | |
204 0x00000400,0x02000400,0x00002400,0x02002400, | |
205 0x00200400,0x02200400,0x00202400,0x02202400, | |
206 0x00000404,0x02000404,0x00002404,0x02002404, | |
207 0x00200404,0x02200404,0x00202404,0x02202404, | |
208 0x10000000,0x12000000,0x10002000,0x12002000, | |
209 0x10200000,0x12200000,0x10202000,0x12202000, | |
210 0x10000004,0x12000004,0x10002004,0x12002004, | |
211 0x10200004,0x12200004,0x10202004,0x12202004, | |
212 0x10000400,0x12000400,0x10002400,0x12002400, | |
213 0x10200400,0x12200400,0x10202400,0x12202400, | |
214 0x10000404,0x12000404,0x10002404,0x12002404, | |
215 0x10200404,0x12200404,0x10202404,0x12202404}, | |
216 { /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */ | |
217 0x00000000,0x00000001,0x00040000,0x00040001, | |
218 0x01000000,0x01000001,0x01040000,0x01040001, | |
219 0x00000002,0x00000003,0x00040002,0x00040003, | |
220 0x01000002,0x01000003,0x01040002,0x01040003, | |
221 0x00000200,0x00000201,0x00040200,0x00040201, | |
222 0x01000200,0x01000201,0x01040200,0x01040201, | |
223 0x00000202,0x00000203,0x00040202,0x00040203, | |
224 0x01000202,0x01000203,0x01040202,0x01040203, | |
225 0x08000000,0x08000001,0x08040000,0x08040001, | |
226 0x09000000,0x09000001,0x09040000,0x09040001, | |
227 0x08000002,0x08000003,0x08040002,0x08040003, | |
228 0x09000002,0x09000003,0x09040002,0x09040003, | |
229 0x08000200,0x08000201,0x08040200,0x08040201, | |
230 0x09000200,0x09000201,0x09040200,0x09040201, | |
231 0x08000202,0x08000203,0x08040202,0x08040203, | |
232 0x09000202,0x09000203,0x09040202,0x09040203}, | |
233 { /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */ | |
234 0x00000000,0x00100000,0x00000100,0x00100100, | |
235 0x00000008,0x00100008,0x00000108,0x00100108, | |
236 0x00001000,0x00101000,0x00001100,0x00101100, | |
237 0x00001008,0x00101008,0x00001108,0x00101108, | |
238 0x04000000,0x04100000,0x04000100,0x04100100, | |
239 0x04000008,0x04100008,0x04000108,0x04100108, | |
240 0x04001000,0x04101000,0x04001100,0x04101100, | |
241 0x04001008,0x04101008,0x04001108,0x04101108, | |
242 0x00020000,0x00120000,0x00020100,0x00120100, | |
243 0x00020008,0x00120008,0x00020108,0x00120108, | |
244 0x00021000,0x00121000,0x00021100,0x00121100, | |
245 0x00021008,0x00121008,0x00021108,0x00121108, | |
246 0x04020000,0x04120000,0x04020100,0x04120100, | |
247 0x04020008,0x04120008,0x04020108,0x04120108, | |
248 0x04021000,0x04121000,0x04021100,0x04121100, | |
249 0x04021008,0x04121008,0x04021108,0x04121108}, | |
250 { /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ | |
251 0x00000000,0x10000000,0x00010000,0x10010000, | |
252 0x00000004,0x10000004,0x00010004,0x10010004, | |
253 0x20000000,0x30000000,0x20010000,0x30010000, | |
254 0x20000004,0x30000004,0x20010004,0x30010004, | |
255 0x00100000,0x10100000,0x00110000,0x10110000, | |
256 0x00100004,0x10100004,0x00110004,0x10110004, | |
257 0x20100000,0x30100000,0x20110000,0x30110000, | |
258 0x20100004,0x30100004,0x20110004,0x30110004, | |
259 0x00001000,0x10001000,0x00011000,0x10011000, | |
260 0x00001004,0x10001004,0x00011004,0x10011004, | |
261 0x20001000,0x30001000,0x20011000,0x30011000, | |
262 0x20001004,0x30001004,0x20011004,0x30011004, | |
263 0x00101000,0x10101000,0x00111000,0x10111000, | |
264 0x00101004,0x10101004,0x00111004,0x10111004, | |
265 0x20101000,0x30101000,0x20111000,0x30111000, | |
266 0x20101004,0x30101004,0x20111004,0x30111004}, | |
267 { /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */ | |
268 0x00000000,0x08000000,0x00000008,0x08000008, | |
269 0x00000400,0x08000400,0x00000408,0x08000408, | |
270 0x00020000,0x08020000,0x00020008,0x08020008, | |
271 0x00020400,0x08020400,0x00020408,0x08020408, | |
272 0x00000001,0x08000001,0x00000009,0x08000009, | |
273 0x00000401,0x08000401,0x00000409,0x08000409, | |
274 0x00020001,0x08020001,0x00020009,0x08020009, | |
275 0x00020401,0x08020401,0x00020409,0x08020409, | |
276 0x02000000,0x0A000000,0x02000008,0x0A000008, | |
277 0x02000400,0x0A000400,0x02000408,0x0A000408, | |
278 0x02020000,0x0A020000,0x02020008,0x0A020008, | |
279 0x02020400,0x0A020400,0x02020408,0x0A020408, | |
280 0x02000001,0x0A000001,0x02000009,0x0A000009, | |
281 0x02000401,0x0A000401,0x02000409,0x0A000409, | |
282 0x02020001,0x0A020001,0x02020009,0x0A020009, | |
283 0x02020401,0x0A020401,0x02020409,0x0A020409}, | |
284 { /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */ | |
285 0x00000000,0x00000100,0x00080000,0x00080100, | |
286 0x01000000,0x01000100,0x01080000,0x01080100, | |
287 0x00000010,0x00000110,0x00080010,0x00080110, | |
288 0x01000010,0x01000110,0x01080010,0x01080110, | |
289 0x00200000,0x00200100,0x00280000,0x00280100, | |
290 0x01200000,0x01200100,0x01280000,0x01280100, | |
291 0x00200010,0x00200110,0x00280010,0x00280110, | |
292 0x01200010,0x01200110,0x01280010,0x01280110, | |
293 0x00000200,0x00000300,0x00080200,0x00080300, | |
294 0x01000200,0x01000300,0x01080200,0x01080300, | |
295 0x00000210,0x00000310,0x00080210,0x00080310, | |
296 0x01000210,0x01000310,0x01080210,0x01080310, | |
297 0x00200200,0x00200300,0x00280200,0x00280300, | |
298 0x01200200,0x01200300,0x01280200,0x01280300, | |
299 0x00200210,0x00200310,0x00280210,0x00280310, | |
300 0x01200210,0x01200310,0x01280210,0x01280310}, | |
301 { /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */ | |
302 0x00000000,0x04000000,0x00040000,0x04040000, | |
303 0x00000002,0x04000002,0x00040002,0x04040002, | |
304 0x00002000,0x04002000,0x00042000,0x04042000, | |
305 0x00002002,0x04002002,0x00042002,0x04042002, | |
306 0x00000020,0x04000020,0x00040020,0x04040020, | |
307 0x00000022,0x04000022,0x00040022,0x04040022, | |
308 0x00002020,0x04002020,0x00042020,0x04042020, | |
309 0x00002022,0x04002022,0x00042022,0x04042022, | |
310 0x00000800,0x04000800,0x00040800,0x04040800, | |
311 0x00000802,0x04000802,0x00040802,0x04040802, | |
312 0x00002800,0x04002800,0x00042800,0x04042800, | |
313 0x00002802,0x04002802,0x00042802,0x04042802, | |
314 0x00000820,0x04000820,0x00040820,0x04040820, | |
315 0x00000822,0x04000822,0x00040822,0x04040822, | |
316 0x00002820,0x04002820,0x00042820,0x04042820, | |
317 0x00002822,0x04002822,0x00042822,0x04042822} | |
318 }; | |
319 | |
320 /* See ecb_encrypt.c for a pseudo description of these macros. */ | |
321 #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ | |
322 (b)^=(t),\ | |
323 (a)^=((t)<<(n))) | |
324 | |
325 #define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\ | |
326 (a)=(a)^(t)^(t>>(16-(n))))\ | |
327 | |
328 static const char shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0}; | |
329 | |
330 static int body( | |
331 unsigned long *out0, | |
332 unsigned long *out1, | |
333 des_key_schedule ks, | |
334 unsigned long Eswap0, | |
335 unsigned long Eswap1); | |
336 | |
337 static int | |
338 des_set_key(des_cblock *key, des_key_schedule schedule) | |
339 { | |
340 unsigned long c,d,t,s; | |
341 unsigned char *in; | |
342 unsigned long *k; | |
343 int i; | |
344 | |
345 k=(unsigned long *)schedule; | |
346 in=(unsigned char *)key; | |
347 | |
348 c2l(in,c); | |
349 c2l(in,d); | |
350 | |
351 /* I now do it in 47 simple operations :-) | |
352 * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov) | |
353 * for the inspiration. :-) */ | |
354 PERM_OP (d,c,t,4,0x0f0f0f0f); | |
355 HPERM_OP(c,t,-2,0xcccc0000); | |
356 HPERM_OP(d,t,-2,0xcccc0000); | |
357 PERM_OP (d,c,t,1,0x55555555); | |
358 PERM_OP (c,d,t,8,0x00ff00ff); | |
359 PERM_OP (d,c,t,1,0x55555555); | |
360 d= (((d&0x000000ff)<<16)| (d&0x0000ff00) | | |
361 ((d&0x00ff0000)>>16)|((c&0xf0000000)>>4)); | |
362 c&=0x0fffffff; | |
363 | |
364 for (i=0; i<ITERATIONS; i++) | |
365 { | |
366 if (shifts2[i]) | |
367 { c=((c>>2)|(c<<26)); d=((d>>2)|(d<<26)); } | |
368 else | |
369 { c=((c>>1)|(c<<27)); d=((d>>1)|(d<<27)); } | |
370 c&=0x0fffffff; | |
371 d&=0x0fffffff; | |
372 /* could be a few less shifts but I am to lazy at this | |
373 * point in time to investigate */ | |
374 s= skb[0][ (c )&0x3f ]| | |
375 skb[1][((c>> 6)&0x03)|((c>> 7)&0x3c)]| | |
376 skb[2][((c>>13)&0x0f)|((c>>14)&0x30)]| | |
377 skb[3][((c>>20)&0x01)|((c>>21)&0x06) | | |
378 ((c>>22)&0x38)]; | |
379 t= skb[4][ (d )&0x3f ]| | |
380 skb[5][((d>> 7)&0x03)|((d>> 8)&0x3c)]| | |
381 skb[6][ (d>>15)&0x3f ]| | |
382 skb[7][((d>>21)&0x0f)|((d>>22)&0x30)]; | |
383 | |
384 /* table contained 0213 4657 */ | |
385 *(k++)=((t<<16)|(s&0x0000ffff))&0xffffffff; | |
386 s= ((s>>16)|(t&0xffff0000)); | |
387 | |
388 s=(s<<4)|(s>>28); | |
389 *(k++)=s&0xffffffff; | |
390 } | |
391 return(0); | |
392 } | |
393 | |
394 /****************************************************************** | |
395 * modified stuff for crypt. | |
396 ******************************************************************/ | |
397 | |
398 /* The changes to this macro may help or hinder, depending on the | |
399 * compiler and the achitecture. gcc2 always seems to do well :-). | |
400 * Inspired by Dana How <how@isl.stanford.edu> | |
401 * DO NOT use the alternative version on machines with 8 byte longs. | |
402 */ | |
403 #ifdef ALT_ECB | |
404 #define D_ENCRYPT(L,R,S) \ | |
405 v=(R^(R>>16)); \ | |
406 u=(v&E0); \ | |
407 v=(v&E1); \ | |
408 u=((u^(u<<16))^R^s[S ])<<2; \ | |
409 t=(v^(v<<16))^R^s[S+1]; \ | |
410 t=(t>>2)|(t<<30); \ | |
411 L^= \ | |
412 *(unsigned long *)(des_SP+0x0100+((t )&0xfc))+ \ | |
413 *(unsigned long *)(des_SP+0x0300+((t>> 8)&0xfc))+ \ | |
414 *(unsigned long *)(des_SP+0x0500+((t>>16)&0xfc))+ \ | |
415 *(unsigned long *)(des_SP+0x0700+((t>>24)&0xfc))+ \ | |
416 *(unsigned long *)(des_SP+ ((u )&0xfc))+ \ | |
417 *(unsigned long *)(des_SP+0x0200+((u>> 8)&0xfc))+ \ | |
418 *(unsigned long *)(des_SP+0x0400+((u>>16)&0xfc))+ \ | |
419 *(unsigned long *)(des_SP+0x0600+((u>>24)&0xfc)); | |
420 #else /* original version */ | |
421 #define D_ENCRYPT(L,R,S) \ | |
422 v=(R^(R>>16)); \ | |
423 u=(v&E0); \ | |
424 v=(v&E1); \ | |
425 u=(u^(u<<16))^R^s[S ]; \ | |
426 t=(v^(v<<16))^R^s[S+1]; \ | |
427 t=(t>>4)|(t<<28); \ | |
428 L^= SPtrans[1][(t )&0x3f]| \ | |
429 SPtrans[3][(t>> 8)&0x3f]| \ | |
430 SPtrans[5][(t>>16)&0x3f]| \ | |
431 SPtrans[7][(t>>24)&0x3f]| \ | |
432 SPtrans[0][(u )&0x3f]| \ | |
433 SPtrans[2][(u>> 8)&0x3f]| \ | |
434 SPtrans[4][(u>>16)&0x3f]| \ | |
435 SPtrans[6][(u>>24)&0x3f]; | |
436 #endif | |
437 | |
438 unsigned const char con_salt[128]={ | |
439 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
440 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
441 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
442 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
443 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
444 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01, | |
445 0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09, | |
446 0x0A,0x0B,0x05,0x06,0x07,0x08,0x09,0x0A, | |
447 0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12, | |
448 0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A, | |
449 0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22, | |
450 0x23,0x24,0x25,0x20,0x21,0x22,0x23,0x24, | |
451 0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C, | |
452 0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34, | |
453 0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C, | |
454 0x3D,0x3E,0x3F,0x00,0x00,0x00,0x00,0x00, | |
455 }; | |
456 | |
457 unsigned const char cov_2char[64]={ | |
458 0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35, | |
459 0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44, | |
460 0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C, | |
461 0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54, | |
462 0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62, | |
463 0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A, | |
464 0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72, | |
465 0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A | |
466 }; | |
467 | |
468 /* the salt for classic DES crypt (which is all we implement here) | |
469 permits [./0-9A-Za-z], since '.' and '/' immediately preceed | |
470 '0' we don't need individual checks for '.' and '/' | |
471 */ | |
472 #define good_for_salt(c) \ | |
473 ((c) >= '.' && (c) <= '9' || (c) >= 'A' && (c) <= 'Z' || \ | |
474 (c) >= 'a' && (c) <= 'z') | |
475 | |
476 char * | |
477 des_fcrypt(const char *buf, const char *salt, char *buff) | |
478 { | |
479 unsigned int i,j,x,y; | |
480 unsigned long Eswap0,Eswap1; | |
481 unsigned long out[2],ll; | |
482 des_cblock key; | |
483 des_key_schedule ks; | |
484 unsigned char bb[9]; | |
485 unsigned char *b=bb; | |
486 unsigned char c,u; | |
487 | |
488 if (!good_for_salt(salt[0]) || !good_for_salt(salt[1])) { | |
489 errno = EINVAL; | |
490 return NULL; | |
491 } | |
492 | |
493 /* eay 25/08/92 | |
494 * If you call crypt("pwd","*") as often happens when you | |
495 * have * as the pwd field in /etc/passwd, the function | |
496 * returns *\0XXXXXXXXX | |
497 * The \0 makes the string look like * so the pwd "*" would | |
498 * crypt to "*". This was found when replacing the crypt in | |
499 * our shared libraries. People found that the disbled | |
500 * accounts effectivly had no passwd :-(. */ | |
501 x=buff[0]=((salt[0] == '\0')?(char)'A':salt[0]); | |
502 Eswap0=con_salt[x]; | |
503 x=buff[1]=((salt[1] == '\0')?(char)'A':salt[1]); | |
504 Eswap1=con_salt[x]<<4; | |
505 | |
506 for (i=0; i<8; i++) | |
507 { | |
508 c= *(buf++); | |
509 if (!c) break; | |
510 key[i]=(char)(c<<1); | |
511 } | |
512 for (; i<8; i++) | |
513 key[i]=0; | |
514 | |
515 des_set_key((des_cblock *)(key),ks); | |
516 body(&out[0],&out[1],ks,Eswap0,Eswap1); | |
517 | |
518 ll=out[0]; l2c(ll,b); | |
519 ll=out[1]; l2c(ll,b); | |
520 y=0; | |
521 u=0x80; | |
522 bb[8]=0; | |
523 for (i=2; i<13; i++) | |
524 { | |
525 c=0; | |
526 for (j=0; j<6; j++) | |
527 { | |
528 c<<=1; | |
529 if (bb[y] & u) c|=1; | |
530 u>>=1; | |
531 if (!u) | |
532 { | |
533 y++; | |
534 u=0x80; | |
535 } | |
536 } | |
537 buff[i]=cov_2char[c]; | |
538 } | |
539 buff[13]='\0'; | |
540 return buff; | |
541 } | |
542 | |
543 static int | |
544 body( unsigned long *out0, | |
545 unsigned long *out1, | |
546 des_key_schedule ks, | |
547 unsigned long Eswap0, | |
548 unsigned long Eswap1) | |
549 { | |
550 unsigned long l,r,t,u,v; | |
551 #ifdef ALT_ECB | |
552 unsigned char *des_SP=(unsigned char *)SPtrans; | |
553 #endif | |
554 unsigned long *s; | |
555 int i,j; | |
556 unsigned long E0,E1; | |
557 | |
558 l=0; | |
559 r=0; | |
560 | |
561 s=(unsigned long *)ks; | |
562 E0=Eswap0; | |
563 E1=Eswap1; | |
564 | |
565 for (j=0; j<25; j++) | |
566 { | |
567 for (i=0; i<(ITERATIONS*2); i+=4) | |
568 { | |
569 D_ENCRYPT(l,r, i); /* 1 */ | |
570 D_ENCRYPT(r,l, i+2); /* 2 */ | |
571 } | |
572 t=l; | |
573 l=r; | |
574 r=t; | |
575 } | |
576 t=r; | |
577 r=(l>>1)|(l<<31); | |
578 l=(t>>1)|(t<<31); | |
579 /* clear the top bits on machines with 8byte longs */ | |
580 l&=0xffffffff; | |
581 r&=0xffffffff; | |
582 | |
583 PERM_OP(r,l,t, 1,0x55555555); | |
584 PERM_OP(l,r,t, 8,0x00ff00ff); | |
585 PERM_OP(r,l,t, 2,0x33333333); | |
586 PERM_OP(l,r,t,16,0x0000ffff); | |
587 PERM_OP(r,l,t, 4,0x0f0f0f0f); | |
588 | |
589 *out0=l; | |
590 *out1=r; | |
591 return(0); | |
592 } | |
593 |