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1
11 package org.eclipse.team.internal.ccvs.ssh;
12
13 import java.io.IOException  ;
14 import java.io.InputStream ;
15 import java.math.BigInteger ;
16 import java.security.MessageDigest ;
17 import java.security.NoSuchAlgorithmException ;
18 import java.security.SecureRandom ;
19
20 import org.eclipse.osgi.util.NLS;
21
22 class Misc {
23 private static MessageDigest md5 = null;
24 private static SecureRandom random = null;
25 private static long crc32_tab[] = {
26 0x00000000L,
27 0x77073096L,
28 0xee0e612cL,
29 0x990951baL,
30 0x076dc419L,
31 0x706af48fL,
32 0xe963a535L,
33 0x9e6495a3L,
34 0x0edb8832L,
35 0x79dcb8a4L,
36 0xe0d5e91eL,
37 0x97d2d988L,
38 0x09b64c2bL,
39 0x7eb17cbdL,
40 0xe7b82d07L,
41 0x90bf1d91L,
42 0x1db71064L,
43 0x6ab020f2L,
44 0xf3b97148L,
45 0x84be41deL,
46 0x1adad47dL,
47 0x6ddde4ebL,
48 0xf4d4b551L,
49 0x83d385c7L,
50 0x136c9856L,
51 0x646ba8c0L,
52 0xfd62f97aL,
53 0x8a65c9ecL,
54 0x14015c4fL,
55 0x63066cd9L,
56 0xfa0f3d63L,
57 0x8d080df5L,
58 0x3b6e20c8L,
59 0x4c69105eL,
60 0xd56041e4L,
61 0xa2677172L,
62 0x3c03e4d1L,
63 0x4b04d447L,
64 0xd20d85fdL,
65 0xa50ab56bL,
66 0x35b5a8faL,
67 0x42b2986cL,
68 0xdbbbc9d6L,
69 0xacbcf940L,
70 0x32d86ce3L,
71 0x45df5c75L,
72 0xdcd60dcfL,
73 0xabd13d59L,
74 0x26d930acL,
75 0x51de003aL,
76 0xc8d75180L,
77 0xbfd06116L,
78 0x21b4f4b5L,
79 0x56b3c423L,
80 0xcfba9599L,
81 0xb8bda50fL,
82 0x2802b89eL,
83 0x5f058808L,
84 0xc60cd9b2L,
85 0xb10be924L,
86 0x2f6f7c87L,
87 0x58684c11L,
88 0xc1611dabL,
89 0xb6662d3dL,
90 0x76dc4190L,
91 0x01db7106L,
92 0x98d220bcL,
93 0xefd5102aL,
94 0x71b18589L,
95 0x06b6b51fL,
96 0x9fbfe4a5L,
97 0xe8b8d433L,
98 0x7807c9a2L,
99 0x0f00f934L,
100 0x9609a88eL,
101 0xe10e9818L,
102 0x7f6a0dbbL,
103 0x086d3d2dL,
104 0x91646c97L,
105 0xe6635c01L,
106 0x6b6b51f4L,
107 0x1c6c6162L,
108 0x856530d8L,
109 0xf262004eL,
110 0x6c0695edL,
111 0x1b01a57bL,
112 0x8208f4c1L,
113 0xf50fc457L,
114 0x65b0d9c6L,
115 0x12b7e950L,
116 0x8bbeb8eaL,
117 0xfcb9887cL,
118 0x62dd1ddfL,
119 0x15da2d49L,
120 0x8cd37cf3L,
121 0xfbd44c65L,
122 0x4db26158L,
123 0x3ab551ceL,
124 0xa3bc0074L,
125 0xd4bb30e2L,
126 0x4adfa541L,
127 0x3dd895d7L,
128 0xa4d1c46dL,
129 0xd3d6f4fbL,
130 0x4369e96aL,
131 0x346ed9fcL,
132 0xad678846L,
133 0xda60b8d0L,
134 0x44042d73L,
135 0x33031de5L,
136 0xaa0a4c5fL,
137 0xdd0d7cc9L,
138 0x5005713cL,
139 0x270241aaL,
140 0xbe0b1010L,
141 0xc90c2086L,
142 0x5768b525L,
143 0x206f85b3L,
144 0xb966d409L,
145 0xce61e49fL,
146 0x5edef90eL,
147 0x29d9c998L,
148 0xb0d09822L,
149 0xc7d7a8b4L,
150 0x59b33d17L,
151 0x2eb40d81L,
152 0xb7bd5c3bL,
153 0xc0ba6cadL,
154 0xedb88320L,
155 0x9abfb3b6L,
156 0x03b6e20cL,
157 0x74b1d29aL,
158 0xead54739L,
159 0x9dd277afL,
160 0x04db2615L,
161 0x73dc1683L,
162 0xe3630b12L,
163 0x94643b84L,
164 0x0d6d6a3eL,
165 0x7a6a5aa8L,
166 0xe40ecf0bL,
167 0x9309ff9dL,
168 0x0a00ae27L,
169 0x7d079eb1L,
170 0xf00f9344L,
171 0x8708a3d2L,
172 0x1e01f268L,
173 0x6906c2feL,
174 0xf762575dL,
175 0x806567cbL,
176 0x196c3671L,
177 0x6e6b06e7L,
178 0xfed41b76L,
179 0x89d32be0L,
180 0x10da7a5aL,
181 0x67dd4accL,
182 0xf9b9df6fL,
183 0x8ebeeff9L,
184 0x17b7be43L,
185 0x60b08ed5L,
186 0xd6d6a3e8L,
187 0xa1d1937eL,
188 0x38d8c2c4L,
189 0x4fdff252L,
190 0xd1bb67f1L,
191 0xa6bc5767L,
192 0x3fb506ddL,
193 0x48b2364bL,
194 0xd80d2bdaL,
195 0xaf0a1b4cL,
196 0x36034af6L,
197 0x41047a60L,
198 0xdf60efc3L,
199 0xa867df55L,
200 0x316e8eefL,
201 0x4669be79L,
202 0xcb61b38cL,
203 0xbc66831aL,
204 0x256fd2a0L,
205 0x5268e236L,
206 0xcc0c7795L,
207 0xbb0b4703L,
208 0x220216b9L,
209 0x5505262fL,
210 0xc5ba3bbeL,
211 0xb2bd0b28L,
212 0x2bb45a92L,
213 0x5cb36a04L,
214 0xc2d7ffa7L,
215 0xb5d0cf31L,
216 0x2cd99e8bL,
217 0x5bdeae1dL,
218 0x9b64c2b0L,
219 0xec63f226L,
220 0x756aa39cL,
221 0x026d930aL,
222 0x9c0906a9L,
223 0xeb0e363fL,
224 0x72076785L,
225 0x05005713L,
226 0x95bf4a82L,
227 0xe2b87a14L,
228 0x7bb12baeL,
229 0x0cb61b38L,
230 0x92d28e9bL,
231 0xe5d5be0dL,
232 0x7cdcefb7L,
233 0x0bdbdf21L,
234 0x86d3d2d4L,
235 0xf1d4e242L,
236 0x68ddb3f8L,
237 0x1fda836eL,
238 0x81be16cdL,
239 0xf6b9265bL,
240 0x6fb077e1L,
241 0x18b74777L,
242 0x88085ae6L,
243 0xff0f6a70L,
244 0x66063bcaL,
245 0x11010b5cL,
246 0x8f659effL,
247 0xf862ae69L,
248 0x616bffd3L,
249 0x166ccf45L,
250 0xa00ae278L,
251 0xd70dd2eeL,
252 0x4e048354L,
253 0x3903b3c2L,
254 0xa7672661L,
255 0xd06016f7L,
256 0x4969474dL,
257 0x3e6e77dbL,
258 0xaed16a4aL,
259 0xd9d65adcL,
260 0x40df0b66L,
261 0x37d83bf0L,
262 0xa9bcae53L,
263 0xdebb9ec5L,
264 0x47b2cf7fL,
265 0x30b5ffe9L,
266 0xbdbdf21cL,
267 0xcabac28aL,
268 0x53b39330L,
269 0x24b4a3a6L,
270 0xbad03605L,
271 0xcdd70693L,
272 0x54de5729L,
273 0x23d967bfL,
274 0xb3667a2eL,
275 0xc4614ab8L,
276 0x5d681b02L,
277 0x2a6f2b94L,
278 0xb40bbe37L,
279 0xc30c8ea1L,
280 0x5a05df1bL,
281 0x2d02ef8dL
282 };
283 static public long crc32(byte[] b, int off, int len) {
284 return crc32(b, off, len, 0);
285 }
286
298 static public long crc32(byte[] b, int off, int len, long crc32val) {
299 for (int i = 0; i < len; i++) {
300 crc32val = crc32_tab[(int) ((crc32val ^ b[off + i]) & 0xff)] ^ (crc32val >> 8);
301 }
302
303 return crc32val;
304 }
305 static public byte[] lengthEncode(byte[] b, int off, int len) {
306 byte[] result = new byte[len + 4];
307 writeInt(len, result, 0);
308 System.arraycopy(b, off, result, 4, len);
309 return result;
310 }
311 static public byte[] readMpInt(InputStream is) throws IOException {
312 int a = is.read();
313 int b = is.read();
314
315 if(a == -1 || b == -1){
316 throw new IOException (CVSSSHMessages.stream);
317 }
318
319 int bits = ((a & 0xFF) << 8) + (b & 0xFF);
320 int bytes = (bits + 7) / 8;
321
322 byte[] result = new byte[bytes];
323
324 readFully(is, result);
325
326 return result;
327 }
328 public static byte[] md5(byte[] b) throws IOException {
329 if (md5 == null) {
330 try {
331 md5 = MessageDigest.getInstance("MD5"); } catch (NoSuchAlgorithmException e) {
333 throw new IOException (NLS.bind(CVSSSHMessages.Misc_missingMD5, new String [] { e.getMessage() }));
334 }
335 }
336
337 return md5.digest(b);
338 }
339 public static byte[] md5(String s) throws IOException {
340 return md5(s.getBytes());
341 }
342 public static void readFully(InputStream is, byte[] b) throws IOException {
343 readFully(is, b, 0, b.length);
344 }
345 public static void readFully(InputStream is, byte[] b, int off, int len) throws IOException {
346 int bytesRead = 0;
347 int totalBytesRead = 0;
348
349 while (totalBytesRead < len) {
350 bytesRead = is.read(b, totalBytesRead + off, len - totalBytesRead);
351
352 if (bytesRead == -1) {
353 throw new IOException (CVSSSHMessages.stream);
354 }
355
356 totalBytesRead += bytesRead;
357 }
358 }
359 public static int readInt(byte[] arr, int off) {
360 int a = arr[off] & 0xff;
361 int b = arr[off + 1] & 0xff;
362 int c = arr[off + 2] & 0xff;
363 int d = arr[off + 3] & 0xff;
364
365 return (a << 24) + (b << 16) + (c << 8) + d;
366 }
367 public static int readInt(InputStream is) throws IOException {
368 int a = is.read();
369 int b = is.read();
370 int c = is.read();
371 int d = is.read();
372
373 if (a == -1 || b == -1 || c == -1 || d == -1) {
374 throw new IOException (CVSSSHMessages.stream);
375 }
376
377 return (a << 24) + (b << 16) + (c << 8) + d;
378 }
379 public static String readString(InputStream is) throws IOException {
380 int size = Misc.readInt(is);
381 byte[] buffer = new byte[size];
382 for (int i = 0; i < buffer.length; i++) {
383 int next = is.read();
384 if (next == -1) {
385 throw new IOException (CVSSSHMessages.stream);
386 } else {
387 buffer[i] = (byte)next;
388 }
389 }
390 return new String (buffer);
391 }
392 public static void skipFully(InputStream is, long n) throws IOException {
393 while (n != 0) {
394 int b = is.read();
395
396 if (b == -1) {
397 if (n > 0) {
398 throw new IOException (CVSSSHMessages.stream);
399 }
400
401 return;
402 }
403
404 --n;
405 }
406 }
407 public static void writeInt(int i, byte[] b, int off) {
408 b[off] = (byte) ((i >> 24) & 0xff);
409 b[off + 1] = (byte) ((i >> 16) & 0xff);
410 b[off + 2] = (byte) ((i >> 8) & 0xff);
411 b[off + 3] = (byte) (i & 0xff);
412 }
413 static public void xor(byte[] src_a, int off_a, byte[] src_b, int off_b, byte[] dst, int dst_off, int len) {
414 for(int i = 0; i < len; ++i){
415 dst[i + dst_off] = (byte) (src_a[i + off_a] ^ src_b[i + off_b]);
416 }
417 }
418 static public void random(byte[] b, int off, int len, boolean allowZeroBytes) {
419 if (random == null) {
420 try {
421 random = SecureRandom.getInstance("SHA1PRNG"); } catch (NoSuchAlgorithmException e) {
423 random = new SecureRandom ();
425 }
426 }
427
428 for(int i = off; i < off + len; ++i){
429 do {
430 b[i] = (byte) random.nextInt();
431 } while(!allowZeroBytes && b[i] == 0);
432 }
433 }
434 static public byte[] encryptRSAPkcs1(byte[] data, byte[] public_key_exponent, byte[] public_key_modulus) {
435 byte[] block;
436
437 int offset = 0;
438 block = new byte[public_key_modulus.length];
439 block[offset++] = 0;
440 block[offset++] = 2;
441
442 Misc.random(block, offset, block.length - data.length - 3, false);
443 offset += block.length - data.length - 3;
444
445 block[offset++] = 0;
446
447 for (int i = 0; i < data.length; i++){
448 block[offset++] = data[i];
449 }
450
451 BigInteger m, e, message;
452 byte[] messageByte;
453
454 m = new BigInteger (1, public_key_modulus);
455 e = new BigInteger (1, public_key_exponent);
456 message = new BigInteger (1, block);
457 message = message.modPow(e, m);
458
459 byte[] messageByteTemp = message.toByteArray();
460 messageByte = new byte[public_key_modulus.length];
461
462 int tempOffset = 0;
463 while (messageByteTemp[tempOffset] == 0){
464 tempOffset++;
465 }
466
467 for (int i = messageByte.length - messageByteTemp.length + tempOffset; i < messageByte.length; i++){
468 messageByte[i] = messageByteTemp[tempOffset++];
469 }
470
471 return messageByte;
472 }
473 }
474 |
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