1 /**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22
23
24 #define _RTL_CIPHER_C_ "$Revision: 1.5 $"
25
26 #include <sal/types.h>
27 #include <rtl/alloc.h>
28 #include <rtl/memory.h>
29 #include <rtl/cipher.h>
30
31 /*========================================================================
32 *
33 * rtlCipher internals.
34 *
35 *======================================================================*/
36 #define RTL_CIPHER_NTOHL(c, l) \
37 ((l) = ((sal_uInt32)(*((c)++))) << 24L, \
38 (l) |= ((sal_uInt32)(*((c)++))) << 16L, \
39 (l) |= ((sal_uInt32)(*((c)++))) << 8L, \
40 (l) |= ((sal_uInt32)(*((c)++))))
41
42 #define RTL_CIPHER_HTONL(l, c) \
43 (*((c)++) = (sal_uInt8)(((l) >> 24L) & 0xff), \
44 *((c)++) = (sal_uInt8)(((l) >> 16L) & 0xff), \
45 *((c)++) = (sal_uInt8)(((l) >> 8L) & 0xff), \
46 *((c)++) = (sal_uInt8)(((l) ) & 0xff))
47
48 #define RTL_CIPHER_NTOHL64(c, xl, xr, n) \
49 { \
50 (xl) = (xr) = 0; \
51 (c) += (n); \
52 switch ((n)) \
53 { \
54 case 8: (xr) = ((sal_uInt32)(*(--(c)))); \
55 case 7: (xr) |= ((sal_uInt32)(*(--(c)))) << 8L; \
56 case 6: (xr) |= ((sal_uInt32)(*(--(c)))) << 16L; \
57 case 5: (xr) |= ((sal_uInt32)(*(--(c)))) << 24L; \
58 case 4: (xl) = ((sal_uInt32)(*(--(c)))); \
59 case 3: (xl) |= ((sal_uInt32)(*(--(c)))) << 8L; \
60 case 2: (xl) |= ((sal_uInt32)(*(--(c)))) << 16L; \
61 case 1: (xl) |= ((sal_uInt32)(*(--(c)))) << 24L; \
62 } \
63 }
64
65 #define RTL_CIPHER_HTONL64(xl, xr, c, n) \
66 { \
67 (c) += (n); \
68 switch ((n)) \
69 { \
70 case 8: *(--(c)) = (sal_uInt8)(((xr) ) & 0xff); \
71 case 7: *(--(c)) = (sal_uInt8)(((xr) >> 8L) & 0xff); \
72 case 6: *(--(c)) = (sal_uInt8)(((xr) >> 16L) & 0xff); \
73 case 5: *(--(c)) = (sal_uInt8)(((xr) >> 24L) & 0xff); \
74 case 4: *(--(c)) = (sal_uInt8)(((xl) ) & 0xff); \
75 case 3: *(--(c)) = (sal_uInt8)(((xl) >> 8L) & 0xff); \
76 case 2: *(--(c)) = (sal_uInt8)(((xl) >> 16L) & 0xff); \
77 case 1: *(--(c)) = (sal_uInt8)(((xl) >> 24L) & 0xff); \
78 } \
79 }
80
81 typedef rtlCipherError (SAL_CALL cipher_init_t) (
82 rtlCipher Cipher,
83 rtlCipherDirection Direction,
84 const sal_uInt8 *pKeyData, sal_Size nKeyLen,
85 const sal_uInt8 *pArgData, sal_Size nArgLen);
86
87 typedef rtlCipherError (SAL_CALL cipher_update_t) (
88 rtlCipher Cipher,
89 const void *pData, sal_Size nDatLen,
90 sal_uInt8 *pBuffer, sal_Size nBufLen);
91
92 typedef void (SAL_CALL cipher_delete_t) (rtlCipher Cipher);
93
94 /** Cipher_Impl.
95 */
96 typedef struct cipher_impl_st
97 {
98 rtlCipherAlgorithm m_algorithm;
99 rtlCipherDirection m_direction;
100 rtlCipherMode m_mode;
101
102 cipher_init_t *m_init;
103 cipher_update_t *m_encode;
104 cipher_update_t *m_decode;
105 cipher_delete_t *m_delete;
106 } Cipher_Impl;
107
108 /*========================================================================
109 *
110 * rtlCipher implementation.
111 *
112 *======================================================================*/
113 /*
114 * rtl_cipher_create.
115 */
rtl_cipher_create(rtlCipherAlgorithm Algorithm,rtlCipherMode Mode)116 rtlCipher SAL_CALL rtl_cipher_create (
117 rtlCipherAlgorithm Algorithm,
118 rtlCipherMode Mode)
119 {
120 rtlCipher Cipher = (rtlCipher)NULL;
121 switch (Algorithm)
122 {
123 case rtl_Cipher_AlgorithmBF:
124 Cipher = rtl_cipher_createBF (Mode);
125 break;
126
127 case rtl_Cipher_AlgorithmARCFOUR:
128 Cipher = rtl_cipher_createARCFOUR (Mode);
129 break;
130
131 default: /* rtl_Cipher_AlgorithmInvalid */
132 break;
133 }
134 return Cipher;
135 }
136
137 /*
138 * rtl_cipher_init.
139 */
rtl_cipher_init(rtlCipher Cipher,rtlCipherDirection Direction,const sal_uInt8 * pKeyData,sal_Size nKeyLen,const sal_uInt8 * pArgData,sal_Size nArgLen)140 rtlCipherError SAL_CALL rtl_cipher_init (
141 rtlCipher Cipher,
142 rtlCipherDirection Direction,
143 const sal_uInt8 *pKeyData, sal_Size nKeyLen,
144 const sal_uInt8 *pArgData, sal_Size nArgLen)
145 {
146 Cipher_Impl *pImpl = (Cipher_Impl*)Cipher;
147 if (pImpl == NULL)
148 return rtl_Cipher_E_Argument;
149 if (pImpl->m_init == NULL)
150 return rtl_Cipher_E_Unknown;
151
152 return (pImpl->m_init)(
153 Cipher, Direction, pKeyData, nKeyLen, pArgData, nArgLen);
154 }
155
156 /*
157 * rtl_cipher_encode.
158 */
rtl_cipher_encode(rtlCipher Cipher,const void * pData,sal_Size nDatLen,sal_uInt8 * pBuffer,sal_Size nBufLen)159 rtlCipherError SAL_CALL rtl_cipher_encode (
160 rtlCipher Cipher,
161 const void *pData, sal_Size nDatLen,
162 sal_uInt8 *pBuffer, sal_Size nBufLen)
163 {
164 Cipher_Impl *pImpl = (Cipher_Impl*)Cipher;
165 if (pImpl == NULL)
166 return rtl_Cipher_E_Argument;
167 if (pImpl->m_encode == NULL)
168 return rtl_Cipher_E_Unknown;
169
170 return (pImpl->m_encode)(Cipher, pData, nDatLen, pBuffer, nBufLen);
171 }
172
173 /*
174 * rtl_cipher_decode.
175 */
rtl_cipher_decode(rtlCipher Cipher,const void * pData,sal_Size nDatLen,sal_uInt8 * pBuffer,sal_Size nBufLen)176 rtlCipherError SAL_CALL rtl_cipher_decode (
177 rtlCipher Cipher,
178 const void *pData, sal_Size nDatLen,
179 sal_uInt8 *pBuffer, sal_Size nBufLen)
180 {
181 Cipher_Impl *pImpl = (Cipher_Impl*)Cipher;
182 if (pImpl == NULL)
183 return rtl_Cipher_E_Argument;
184 if (pImpl->m_decode == NULL)
185 return rtl_Cipher_E_Unknown;
186
187 return (pImpl->m_decode)(Cipher, pData, nDatLen, pBuffer, nBufLen);
188 }
189
190 /*
191 * rtl_cipher_destroy.
192 */
rtl_cipher_destroy(rtlCipher Cipher)193 void SAL_CALL rtl_cipher_destroy (rtlCipher Cipher)
194 {
195 Cipher_Impl *pImpl = (Cipher_Impl*)Cipher;
196 if (pImpl && pImpl->m_delete)
197 pImpl->m_delete (Cipher);
198 }
199
200 /*========================================================================
201 *
202 * rtl_cipherBF (Blowfish) internals.
203 *
204 *======================================================================*/
205 #define CIPHER_ROUNDS_BF 16
206
207 typedef struct cipherBF_key_st
208 {
209 sal_uInt32 m_S[4][256];
210 sal_uInt32 m_P[CIPHER_ROUNDS_BF + 2];
211 } CipherKeyBF;
212
213 typedef struct cipherBF_context_st
214 {
215 CipherKeyBF m_key;
216 union
217 {
218 sal_uInt32 m_long[2];
219 sal_uInt8 m_byte[8];
220 } m_iv;
221 sal_uInt32 m_offset;
222 } CipherContextBF;
223
224 typedef struct cipherBF_impl_st
225 {
226 Cipher_Impl m_cipher;
227 CipherContextBF m_context;
228 } CipherBF_Impl;
229
230 /** __rtl_cipherBF_init.
231 */
232 static rtlCipherError __rtl_cipherBF_init (
233 CipherContextBF *ctx,
234 rtlCipherMode eMode,
235 const sal_uInt8 *pKeyData, sal_Size nKeyLen,
236 const sal_uInt8 *pArgData, sal_Size nArgLen);
237
238 /** __rtl_cipherBF_update.
239 */
240 static rtlCipherError __rtl_cipherBF_update (
241 CipherContextBF *ctx,
242 rtlCipherMode eMode,
243 rtlCipherDirection eDirection,
244 const sal_uInt8 *pData, sal_Size nDatLen,
245 sal_uInt8 *pBuffer, sal_Size nBufLen);
246
247 /** __rtl_cipherBF_updateECB.
248 */
249 static void __rtl_cipherBF_updateECB (
250 CipherContextBF *ctx,
251 rtlCipherDirection direction,
252 const sal_uInt8 *pData,
253 sal_uInt8 *pBuffer,
254 sal_Size nLength);
255
256 /** __rtl_cipherBF_updateCBC.
257 */
258 static void __rtl_cipherBF_updateCBC (
259 CipherContextBF *ctx,
260 rtlCipherDirection direction,
261 const sal_uInt8 *pData,
262 sal_uInt8 *pBuffer,
263 sal_Size nLength);
264
265 /** __rtl_cipherBF_updateCFB.
266 */
267 static void __rtl_cipherBF_updateCFB (
268 CipherContextBF *ctx,
269 rtlCipherDirection direction,
270 const sal_uInt8 *pData,
271 sal_uInt8 *pBuffer);
272
273 /** __rtl_cipher_encode.
274 */
275 static void __rtl_cipherBF_encode (
276 CipherKeyBF *key, sal_uInt32 *xl, sal_uInt32 *xr);
277
278 /** __rtl_cipherBF_decode.
279 */
280 static void __rtl_cipherBF_decode (
281 CipherKeyBF *key, sal_uInt32 *xl, sal_uInt32 *xr);
282
283 /** __rtl_cipherBF.
284 */
285 static sal_uInt32 __rtl_cipherBF (
286 CipherKeyBF *key, sal_uInt32 x);
287
288 /** __rtl_cipherBF_key.
289 */
290 static const CipherKeyBF __rtl_cipherBF_key =
291 {
292 /* S */
293 {
294 /* S[0] */
295 {
296 /* 0 */
297 0xD1310BA6L, 0x98DFB5ACL, 0x2FFD72DBL, 0xD01ADFB7L,
298 0xB8E1AFEDL, 0x6A267E96L, 0xBA7C9045L, 0xF12C7F99L,
299 0x24A19947L, 0xB3916CF7L, 0x0801F2E2L, 0x858EFC16L,
300 0x636920D8L, 0x71574E69L, 0xA458FEA3L, 0xF4933D7EL,
301
302 /* 1 */
303 0x0D95748FL, 0x728EB658L, 0x718BCD58L, 0x82154AEEL,
304 0x7B54A41DL, 0xC25A59B5L, 0x9C30D539L, 0x2AF26013L,
305 0xC5D1B023L, 0x286085F0L, 0xCA417918L, 0xB8DB38EFL,
306 0x8E79DCB0L, 0x603A180EL, 0x6C9E0E8BL, 0xB01E8A3EL,
307
308 /* 2 */
309 0xD71577C1L, 0xBD314B27L, 0x78AF2FDAL, 0x55605C60L,
310 0xE65525F3L, 0xAA55AB94L, 0x57489862L, 0x63E81440L,
311 0x55CA396AL, 0x2AAB10B6L, 0xB4CC5C34L, 0x1141E8CEL,
312 0xA15486AFL, 0x7C72E993L, 0xB3EE1411L, 0x636FBC2AL,
313
314 /* 3 */
315 0x2BA9C55DL, 0x741831F6L, 0xCE5C3E16L, 0x9B87931EL,
316 0xAFD6BA33L, 0x6C24CF5CL, 0x7A325381L, 0x28958677L,
317 0x3B8F4898L, 0x6B4BB9AFL, 0xC4BFE81BL, 0x66282193L,
318 0x61D809CCL, 0xFB21A991L, 0x487CAC60L, 0x5DEC8032L,
319
320 /* 4 */
321 0xEF845D5DL, 0xE98575B1L, 0xDC262302L, 0xEB651B88L,
322 0x23893E81L, 0xD396ACC5L, 0x0F6D6FF3L, 0x83F44239L,
323 0x2E0B4482L, 0xA4842004L, 0x69C8F04AL, 0x9E1F9B5EL,
324 0x21C66842L, 0xF6E96C9AL, 0x670C9C61L, 0xABD388F0L,
325
326 /* 5 */
327 0x6A51A0D2L, 0xD8542F68L, 0x960FA728L, 0xAB5133A3L,
328 0x6EEF0B6CL, 0x137A3BE4L, 0xBA3BF050L, 0x7EFB2A98L,
329 0xA1F1651DL, 0x39AF0176L, 0x66CA593EL, 0x82430E88L,
330 0x8CEE8619L, 0x456F9FB4L, 0x7D84A5C3L, 0x3B8B5EBEL,
331
332 /* 6 */
333 0xE06F75D8L, 0x85C12073L, 0x401A449FL, 0x56C16AA6L,
334 0x4ED3AA62L, 0x363F7706L, 0x1BFEDF72L, 0x429B023DL,
335 0x37D0D724L, 0xD00A1248L, 0xDB0FEAD3L, 0x49F1C09BL,
336 0x075372C9L, 0x80991B7BL, 0x25D479D8L, 0xF6E8DEF7L,
337
338 /* 7 */
339 0xE3FE501AL, 0xB6794C3BL, 0x976CE0BDL, 0x04C006BAL,
340 0xC1A94FB6L, 0x409F60C4L, 0x5E5C9EC2L, 0x196A2463L,
341 0x68FB6FAFL, 0x3E6C53B5L, 0x1339B2EBL, 0x3B52EC6FL,
342 0x6DFC511FL, 0x9B30952CL, 0xCC814544L, 0xAF5EBD09L,
343
344 /* 8 */
345 0xBEE3D004L, 0xDE334AFDL, 0x660F2807L, 0x192E4BB3L,
346 0xC0CBA857L, 0x45C8740FL, 0xD20B5F39L, 0xB9D3FBDBL,
347 0x5579C0BDL, 0x1A60320AL, 0xD6A100C6L, 0x402C7279L,
348 0x679F25FEL, 0xFB1FA3CCL, 0x8EA5E9F8L, 0xDB3222F8L,
349
350 /* 9 */
351 0x3C7516DFL, 0xFD616B15L, 0x2F501EC8L, 0xAD0552ABL,
352 0x323DB5FAL, 0xFD238760L, 0x53317B48L, 0x3E00DF82L,
353 0x9E5C57BBL, 0xCA6F8CA0L, 0x1A87562EL, 0xDF1769DBL,
354 0xD542A8F6L, 0x287EFFC3L, 0xAC6732C6L, 0x8C4F5573L,
355
356 /* A */
357 0x695B27B0L, 0xBBCA58C8L, 0xE1FFA35DL, 0xB8F011A0L,
358 0x10FA3D98L, 0xFD2183B8L, 0x4AFCB56CL, 0x2DD1D35BL,
359 0x9A53E479L, 0xB6F84565L, 0xD28E49BCL, 0x4BFB9790L,
360 0xE1DDF2DAL, 0xA4CB7E33L, 0x62FB1341L, 0xCEE4C6E8L,
361
362 /* B */
363 0xEF20CADAL, 0x36774C01L, 0xD07E9EFEL, 0x2BF11FB4L,
364 0x95DBDA4DL, 0xAE909198L, 0xEAAD8E71L, 0x6B93D5A0L,
365 0xD08ED1D0L, 0xAFC725E0L, 0x8E3C5B2FL, 0x8E7594B7L,
366 0x8FF6E2FBL, 0xF2122B64L, 0x8888B812L, 0x900DF01CL,
367
368 /* C */
369 0x4FAD5EA0L, 0x688FC31CL, 0xD1CFF191L, 0xB3A8C1ADL,
370 0x2F2F2218L, 0xBE0E1777L, 0xEA752DFEL, 0x8B021FA1L,
371 0xE5A0CC0FL, 0xB56F74E8L, 0x18ACF3D6L, 0xCE89E299L,
372 0xB4A84FE0L, 0xFD13E0B7L, 0x7CC43B81L, 0xD2ADA8D9L,
373
374 /* D */
375 0x165FA266L, 0x80957705L, 0x93CC7314L, 0x211A1477L,
376 0xE6AD2065L, 0x77B5FA86L, 0xC75442F5L, 0xFB9D35CFL,
377 0xEBCDAF0CL, 0x7B3E89A0L, 0xD6411BD3L, 0xAE1E7E49L,
378 0x00250E2DL, 0x2071B35EL, 0x226800BBL, 0x57B8E0AFL,
379
380 /* E */
381 0x2464369BL, 0xF009B91EL, 0x5563911DL, 0x59DFA6AAL,
382 0x78C14389L, 0xD95A537FL, 0x207D5BA2L, 0x02E5B9C5L,
383 0x83260376L, 0x6295CFA9L, 0x11C81968L, 0x4E734A41L,
384 0xB3472DCAL, 0x7B14A94AL, 0x1B510052L, 0x9A532915L,
385
386 /* F */
387 0xD60F573FL, 0xBC9BC6E4L, 0x2B60A476L, 0x81E67400L,
388 0x08BA6FB5L, 0x571BE91FL, 0xF296EC6BL, 0x2A0DD915L,
389 0xB6636521L, 0xE7B9F9B6L, 0xFF34052EL, 0xC5855664L,
390 0x53B02D5DL, 0xA99F8FA1L, 0x08BA4799L, 0x6E85076AL
391 },
392
393 /* S[1] */
394 {
395 0x4B7A70E9L, 0xB5B32944L, 0xDB75092EL, 0xC4192623L,
396 0xAD6EA6B0L, 0x49A7DF7DL, 0x9CEE60B8L, 0x8FEDB266L,
397 0xECAA8C71L, 0x699A17FFL, 0x5664526CL, 0xC2B19EE1L,
398 0x193602A5L, 0x75094C29L, 0xA0591340L, 0xE4183A3EL,
399
400 0x3F54989AL, 0x5B429D65L, 0x6B8FE4D6L, 0x99F73FD6L,
401 0xA1D29C07L, 0xEFE830F5L, 0x4D2D38E6L, 0xF0255DC1L,
402 0x4CDD2086L, 0x8470EB26L, 0x6382E9C6L, 0x021ECC5EL,
403 0x09686B3FL, 0x3EBAEFC9L, 0x3C971814L, 0x6B6A70A1L,
404
405 0x687F3584L, 0x52A0E286L, 0xB79C5305L, 0xAA500737L,
406 0x3E07841CL, 0x7FDEAE5CL, 0x8E7D44ECL, 0x5716F2B8L,
407 0xB03ADA37L, 0xF0500C0DL, 0xF01C1F04L, 0x0200B3FFL,
408 0xAE0CF51AL, 0x3CB574B2L, 0x25837A58L, 0xDC0921BDL,
409
410 0xD19113F9L, 0x7CA92FF6L, 0x94324773L, 0x22F54701L,
411 0x3AE5E581L, 0x37C2DADCL, 0xC8B57634L, 0x9AF3DDA7L,
412 0xA9446146L, 0x0FD0030EL, 0xECC8C73EL, 0xA4751E41L,
413 0xE238CD99L, 0x3BEA0E2FL, 0x3280BBA1L, 0x183EB331L,
414
415 0x4E548B38L, 0x4F6DB908L, 0x6F420D03L, 0xF60A04BFL,
416 0x2CB81290L, 0x24977C79L, 0x5679B072L, 0xBCAF89AFL,
417 0xDE9A771FL, 0xD9930810L, 0xB38BAE12L, 0xDCCF3F2EL,
418 0x5512721FL, 0x2E6B7124L, 0x501ADDE6L, 0x9F84CD87L,
419
420 0x7A584718L, 0x7408DA17L, 0xBC9F9ABCL, 0xE94B7D8CL,
421 0xEC7AEC3AL, 0xDB851DFAL, 0x63094366L, 0xC464C3D2L,
422 0xEF1C1847L, 0x3215D908L, 0xDD433B37L, 0x24C2BA16L,
423 0x12A14D43L, 0x2A65C451L, 0x50940002L, 0x133AE4DDL,
424
425 0x71DFF89EL, 0x10314E55L, 0x81AC77D6L, 0x5F11199BL,
426 0x043556F1L, 0xD7A3C76BL, 0x3C11183BL, 0x5924A509L,
427 0xF28FE6EDL, 0x97F1FBFAL, 0x9EBABF2CL, 0x1E153C6EL,
428 0x86E34570L, 0xEAE96FB1L, 0x860E5E0AL, 0x5A3E2AB3L,
429
430 0x771FE71CL, 0x4E3D06FAL, 0x2965DCB9L, 0x99E71D0FL,
431 0x803E89D6L, 0x5266C825L, 0x2E4CC978L, 0x9C10B36AL,
432 0xC6150EBAL, 0x94E2EA78L, 0xA5FC3C53L, 0x1E0A2DF4L,
433 0xF2F74EA7L, 0x361D2B3DL, 0x1939260FL, 0x19C27960L,
434
435 0x5223A708L, 0xF71312B6L, 0xEBADFE6EL, 0xEAC31F66L,
436 0xE3BC4595L, 0xA67BC883L, 0xB17F37D1L, 0x018CFF28L,
437 0xC332DDEFL, 0xBE6C5AA5L, 0x65582185L, 0x68AB9802L,
438 0xEECEA50FL, 0xDB2F953BL, 0x2AEF7DADL, 0x5B6E2F84L,
439
440 0x1521B628L, 0x29076170L, 0xECDD4775L, 0x619F1510L,
441 0x13CCA830L, 0xEB61BD96L, 0x0334FE1EL, 0xAA0363CFL,
442 0xB5735C90L, 0x4C70A239L, 0xD59E9E0BL, 0xCBAADE14L,
443 0xEECC86BCL, 0x60622CA7L, 0x9CAB5CABL, 0xB2F3846EL,
444
445 0x648B1EAFL, 0x19BDF0CAL, 0xA02369B9L, 0x655ABB50L,
446 0x40685A32L, 0x3C2AB4B3L, 0x319EE9D5L, 0xC021B8F7L,
447 0x9B540B19L, 0x875FA099L, 0x95F7997EL, 0x623D7DA8L,
448 0xF837889AL, 0x97E32D77L, 0x11ED935FL, 0x16681281L,
449
450 0x0E358829L, 0xC7E61FD6L, 0x96DEDFA1L, 0x7858BA99L,
451 0x57F584A5L, 0x1B227263L, 0x9B83C3FFL, 0x1AC24696L,
452 0xCDB30AEBL, 0x532E3054L, 0x8FD948E4L, 0x6DBC3128L,
453 0x58EBF2EFL, 0x34C6FFEAL, 0xFE28ED61L, 0xEE7C3C73L,
454
455 0x5D4A14D9L, 0xE864B7E3L, 0x42105D14L, 0x203E13E0L,
456 0x45EEE2B6L, 0xA3AAABEAL, 0xDB6C4F15L, 0xFACB4FD0L,
457 0xC742F442L, 0xEF6ABBB5L, 0x654F3B1DL, 0x41CD2105L,
458 0xD81E799EL, 0x86854DC7L, 0xE44B476AL, 0x3D816250L,
459
460 0xCF62A1F2L, 0x5B8D2646L, 0xFC8883A0L, 0xC1C7B6A3L,
461 0x7F1524C3L, 0x69CB7492L, 0x47848A0BL, 0x5692B285L,
462 0x095BBF00L, 0xAD19489DL, 0x1462B174L, 0x23820E00L,
463 0x58428D2AL, 0x0C55F5EAL, 0x1DADF43EL, 0x233F7061L,
464
465 0x3372F092L, 0x8D937E41L, 0xD65FECF1L, 0x6C223BDBL,
466 0x7CDE3759L, 0xCBEE7460L, 0x4085F2A7L, 0xCE77326EL,
467 0xA6078084L, 0x19F8509EL, 0xE8EFD855L, 0x61D99735L,
468 0xA969A7AAL, 0xC50C06C2L, 0x5A04ABFCL, 0x800BCADCL,
469
470 0x9E447A2EL, 0xC3453484L, 0xFDD56705L, 0x0E1E9EC9L,
471 0xDB73DBD3L, 0x105588CDL, 0x675FDA79L, 0xE3674340L,
472 0xC5C43465L, 0x713E38D8L, 0x3D28F89EL, 0xF16DFF20L,
473 0x153E21E7L, 0x8FB03D4AL, 0xE6E39F2BL, 0xDB83ADF7L
474 },
475
476 /* S[2] */
477 {
478 0xE93D5A68L, 0x948140F7L, 0xF64C261CL, 0x94692934L,
479 0x411520F7L, 0x7602D4F7L, 0xBCF46B2EL, 0xD4A20068L,
480 0xD4082471L, 0x3320F46AL, 0x43B7D4B7L, 0x500061AFL,
481 0x1E39F62EL, 0x97244546L, 0x14214F74L, 0xBF8B8840L,
482
483 0x4D95FC1DL, 0x96B591AFL, 0x70F4DDD3L, 0x66A02F45L,
484 0xBFBC09ECL, 0x03BD9785L, 0x7FAC6DD0L, 0x31CB8504L,
485 0x96EB27B3L, 0x55FD3941L, 0xDA2547E6L, 0xABCA0A9AL,
486 0x28507825L, 0x530429F4L, 0x0A2C86DAL, 0xE9B66DFBL,
487
488 0x68DC1462L, 0xD7486900L, 0x680EC0A4L, 0x27A18DEEL,
489 0x4F3FFEA2L, 0xE887AD8CL, 0xB58CE006L, 0x7AF4D6B6L,
490 0xAACE1E7CL, 0xD3375FECL, 0xCE78A399L, 0x406B2A42L,
491 0x20FE9E35L, 0xD9F385B9L, 0xEE39D7ABL, 0x3B124E8BL,
492
493 0x1DC9FAF7L, 0x4B6D1856L, 0x26A36631L, 0xEAE397B2L,
494 0x3A6EFA74L, 0xDD5B4332L, 0x6841E7F7L, 0xCA7820FBL,
495 0xFB0AF54EL, 0xD8FEB397L, 0x454056ACL, 0xBA489527L,
496 0x55533A3AL, 0x20838D87L, 0xFE6BA9B7L, 0xD096954BL,
497
498 0x55A867BCL, 0xA1159A58L, 0xCCA92963L, 0x99E1DB33L,
499 0xA62A4A56L, 0x3F3125F9L, 0x5EF47E1CL, 0x9029317CL,
500 0xFDF8E802L, 0x04272F70L, 0x80BB155CL, 0x05282CE3L,
501 0x95C11548L, 0xE4C66D22L, 0x48C1133FL, 0xC70F86DCL,
502
503 0x07F9C9EEL, 0x41041F0FL, 0x404779A4L, 0x5D886E17L,
504 0x325F51EBL, 0xD59BC0D1L, 0xF2BCC18FL, 0x41113564L,
505 0x257B7834L, 0x602A9C60L, 0xDFF8E8A3L, 0x1F636C1BL,
506 0x0E12B4C2L, 0x02E1329EL, 0xAF664FD1L, 0xCAD18115L,
507
508 0x6B2395E0L, 0x333E92E1L, 0x3B240B62L, 0xEEBEB922L,
509 0x85B2A20EL, 0xE6BA0D99L, 0xDE720C8CL, 0x2DA2F728L,
510 0xD0127845L, 0x95B794FDL, 0x647D0862L, 0xE7CCF5F0L,
511 0x5449A36FL, 0x877D48FAL, 0xC39DFD27L, 0xF33E8D1EL,
512
513 0x0A476341L, 0x992EFF74L, 0x3A6F6EABL, 0xF4F8FD37L,
514 0xA812DC60L, 0xA1EBDDF8L, 0x991BE14CL, 0xDB6E6B0DL,
515 0xC67B5510L, 0x6D672C37L, 0x2765D43BL, 0xDCD0E804L,
516 0xF1290DC7L, 0xCC00FFA3L, 0xB5390F92L, 0x690FED0BL,
517
518 0x667B9FFBL, 0xCEDB7D9CL, 0xA091CF0BL, 0xD9155EA3L,
519 0xBB132F88L, 0x515BAD24L, 0x7B9479BFL, 0x763BD6EBL,
520 0x37392EB3L, 0xCC115979L, 0x8026E297L, 0xF42E312DL,
521 0x6842ADA7L, 0xC66A2B3BL, 0x12754CCCL, 0x782EF11CL,
522
523 0x6A124237L, 0xB79251E7L, 0x06A1BBE6L, 0x4BFB6350L,
524 0x1A6B1018L, 0x11CAEDFAL, 0x3D25BDD8L, 0xE2E1C3C9L,
525 0x44421659L, 0x0A121386L, 0xD90CEC6EL, 0xD5ABEA2AL,
526 0x64AF674EL, 0xDA86A85FL, 0xBEBFE988L, 0x64E4C3FEL,
527
528 0x9DBC8057L, 0xF0F7C086L, 0x60787BF8L, 0x6003604DL,
529 0xD1FD8346L, 0xF6381FB0L, 0x7745AE04L, 0xD736FCCCL,
530 0x83426B33L, 0xF01EAB71L, 0xB0804187L, 0x3C005E5FL,
531 0x77A057BEL, 0xBDE8AE24L, 0x55464299L, 0xBF582E61L,
532
533 0x4E58F48FL, 0xF2DDFDA2L, 0xF474EF38L, 0x8789BDC2L,
534 0x5366F9C3L, 0xC8B38E74L, 0xB475F255L, 0x46FCD9B9L,
535 0x7AEB2661L, 0x8B1DDF84L, 0x846A0E79L, 0x915F95E2L,
536 0x466E598EL, 0x20B45770L, 0x8CD55591L, 0xC902DE4CL,
537
538 0xB90BACE1L, 0xBB8205D0L, 0x11A86248L, 0x7574A99EL,
539 0xB77F19B6L, 0xE0A9DC09L, 0x662D09A1L, 0xC4324633L,
540 0xE85A1F02L, 0x09F0BE8CL, 0x4A99A025L, 0x1D6EFE10L,
541 0x1AB93D1DL, 0x0BA5A4DFL, 0xA186F20FL, 0x2868F169L,
542
543 0xDCB7DA83L, 0x573906FEL, 0xA1E2CE9BL, 0x4FCD7F52L,
544 0x50115E01L, 0xA70683FAL, 0xA002B5C4L, 0x0DE6D027L,
545 0x9AF88C27L, 0x773F8641L, 0xC3604C06L, 0x61A806B5L,
546 0xF0177A28L, 0xC0F586E0L, 0x006058AAL, 0x30DC7D62L,
547
548 0x11E69ED7L, 0x2338EA63L, 0x53C2DD94L, 0xC2C21634L,
549 0xBBCBEE56L, 0x90BCB6DEL, 0xEBFC7DA1L, 0xCE591D76L,
550 0x6F05E409L, 0x4B7C0188L, 0x39720A3DL, 0x7C927C24L,
551 0x86E3725FL, 0x724D9DB9L, 0x1AC15BB4L, 0xD39EB8FCL,
552
553 0xED545578L, 0x08FCA5B5L, 0xD83D7CD3L, 0x4DAD0FC4L,
554 0x1E50EF5EL, 0xB161E6F8L, 0xA28514D9L, 0x6C51133CL,
555 0x6FD5C7E7L, 0x56E14EC4L, 0x362ABFCEL, 0xDDC6C837L,
556 0xD79A3234L, 0x92638212L, 0x670EFA8EL, 0x406000E0L
557 },
558
559 /* S[3] */
560 {
561 0x3A39CE37L, 0xD3FAF5CFL, 0xABC27737L, 0x5AC52D1BL,
562 0x5CB0679EL, 0x4FA33742L, 0xD3822740L, 0x99BC9BBEL,
563 0xD5118E9DL, 0xBF0F7315L, 0xD62D1C7EL, 0xC700C47BL,
564 0xB78C1B6BL, 0x21A19045L, 0xB26EB1BEL, 0x6A366EB4L,
565
566 0x5748AB2FL, 0xBC946E79L, 0xC6A376D2L, 0x6549C2C8L,
567 0x530FF8EEL, 0x468DDE7DL, 0xD5730A1DL, 0x4CD04DC6L,
568 0x2939BBDBL, 0xA9BA4650L, 0xAC9526E8L, 0xBE5EE304L,
569 0xA1FAD5F0L, 0x6A2D519AL, 0x63EF8CE2L, 0x9A86EE22L,
570
571 0xC089C2B8L, 0x43242EF6L, 0xA51E03AAL, 0x9CF2D0A4L,
572 0x83C061BAL, 0x9BE96A4DL, 0x8FE51550L, 0xBA645BD6L,
573 0x2826A2F9L, 0xA73A3AE1L, 0x4BA99586L, 0xEF5562E9L,
574 0xC72FEFD3L, 0xF752F7DAL, 0x3F046F69L, 0x77FA0A59L,
575
576 0x80E4A915L, 0x87B08601L, 0x9B09E6ADL, 0x3B3EE593L,
577 0xE990FD5AL, 0x9E34D797L, 0x2CF0B7D9L, 0x022B8B51L,
578 0x96D5AC3AL, 0x017DA67DL, 0xD1CF3ED6L, 0x7C7D2D28L,
579 0x1F9F25CFL, 0xADF2B89BL, 0x5AD6B472L, 0x5A88F54CL,
580
581 0xE029AC71L, 0xE019A5E6L, 0x47B0ACFDL, 0xED93FA9BL,
582 0xE8D3C48DL, 0x283B57CCL, 0xF8D56629L, 0x79132E28L,
583 0x785F0191L, 0xED756055L, 0xF7960E44L, 0xE3D35E8CL,
584 0x15056DD4L, 0x88F46DBAL, 0x03A16125L, 0x0564F0BDL,
585
586 0xC3EB9E15L, 0x3C9057A2L, 0x97271AECL, 0xA93A072AL,
587 0x1B3F6D9BL, 0x1E6321F5L, 0xF59C66FBL, 0x26DCF319L,
588 0x7533D928L, 0xB155FDF5L, 0x03563482L, 0x8ABA3CBBL,
589 0x28517711L, 0xC20AD9F8L, 0xABCC5167L, 0xCCAD925FL,
590
591 0x4DE81751L, 0x3830DC8EL, 0x379D5862L, 0x9320F991L,
592 0xEA7A90C2L, 0xFB3E7BCEL, 0x5121CE64L, 0x774FBE32L,
593 0xA8B6E37EL, 0xC3293D46L, 0x48DE5369L, 0x6413E680L,
594 0xA2AE0810L, 0xDD6DB224L, 0x69852DFDL, 0x09072166L,
595
596 0xB39A460AL, 0x6445C0DDL, 0x586CDECFL, 0x1C20C8AEL,
597 0x5BBEF7DDL, 0x1B588D40L, 0xCCD2017FL, 0x6BB4E3BBL,
598 0xDDA26A7EL, 0x3A59FF45L, 0x3E350A44L, 0xBCB4CDD5L,
599 0x72EACEA8L, 0xFA6484BBL, 0x8D6612AEL, 0xBF3C6F47L,
600
601 0xD29BE463L, 0x542F5D9EL, 0xAEC2771BL, 0xF64E6370L,
602 0x740E0D8DL, 0xE75B1357L, 0xF8721671L, 0xAF537D5DL,
603 0x4040CB08L, 0x4EB4E2CCL, 0x34D2466AL, 0x0115AF84L,
604 0xE1B00428L, 0x95983A1DL, 0x06B89FB4L, 0xCE6EA048L,
605
606 0x6F3F3B82L, 0x3520AB82L, 0x011A1D4BL, 0x277227F8L,
607 0x611560B1L, 0xE7933FDCL, 0xBB3A792BL, 0x344525BDL,
608 0xA08839E1L, 0x51CE794BL, 0x2F32C9B7L, 0xA01FBAC9L,
609 0xE01CC87EL, 0xBCC7D1F6L, 0xCF0111C3L, 0xA1E8AAC7L,
610
611 0x1A908749L, 0xD44FBD9AL, 0xD0DADECBL, 0xD50ADA38L,
612 0x0339C32AL, 0xC6913667L, 0x8DF9317CL, 0xE0B12B4FL,
613 0xF79E59B7L, 0x43F5BB3AL, 0xF2D519FFL, 0x27D9459CL,
614 0xBF97222CL, 0x15E6FC2AL, 0x0F91FC71L, 0x9B941525L,
615
616 0xFAE59361L, 0xCEB69CEBL, 0xC2A86459L, 0x12BAA8D1L,
617 0xB6C1075EL, 0xE3056A0CL, 0x10D25065L, 0xCB03A442L,
618 0xE0EC6E0EL, 0x1698DB3BL, 0x4C98A0BEL, 0x3278E964L,
619 0x9F1F9532L, 0xE0D392DFL, 0xD3A0342BL, 0x8971F21EL,
620
621 0x1B0A7441L, 0x4BA3348CL, 0xC5BE7120L, 0xC37632D8L,
622 0xDF359F8DL, 0x9B992F2EL, 0xE60B6F47L, 0x0FE3F11DL,
623 0xE54CDA54L, 0x1EDAD891L, 0xCE6279CFL, 0xCD3E7E6FL,
624 0x1618B166L, 0xFD2C1D05L, 0x848FD2C5L, 0xF6FB2299L,
625
626 0xF523F357L, 0xA6327623L, 0x93A83531L, 0x56CCCD02L,
627 0xACF08162L, 0x5A75EBB5L, 0x6E163697L, 0x88D273CCL,
628 0xDE966292L, 0x81B949D0L, 0x4C50901BL, 0x71C65614L,
629 0xE6C6C7BDL, 0x327A140AL, 0x45E1D006L, 0xC3F27B9AL,
630
631 0xC9AA53FDL, 0x62A80F00L, 0xBB25BFE2L, 0x35BDD2F6L,
632 0x71126905L, 0xB2040222L, 0xB6CBCF7CL, 0xCD769C2BL,
633 0x53113EC0L, 0x1640E3D3L, 0x38ABBD60L, 0x2547ADF0L,
634 0xBA38209CL, 0xF746CE76L, 0x77AFA1C5L, 0x20756060L,
635
636 0x85CBFE4EL, 0x8AE88DD8L, 0x7AAAF9B0L, 0x4CF9AA7EL,
637 0x1948C25CL, 0x02FB8A8CL, 0x01C36AE4L, 0xD6EBE1F9L,
638 0x90D4F869L, 0xA65CDEA0L, 0x3F09252DL, 0xC208E69FL,
639 0xB74E6132L, 0xCE77E25BL, 0x578FDFE3L, 0x3AC372E6L
640 }
641 },
642
643 /* P */
644 {
645 0x243F6A88L, 0x85A308D3L, 0x13198A2EL, 0x03707344L,
646 0xA4093822L, 0x299F31D0L, 0x082EFA98L, 0xEC4E6C89L,
647 0x452821E6L, 0x38D01377L, 0xBE5466CFL, 0x34E90C6CL,
648 0xC0AC29B7L, 0xC97C50DDL, 0x3F84D5B5L, 0xB5470917L,
649 0x9216D5D9L, 0x8979FB1BL
650 }
651 };
652
653 /*
654 * __rtl_cipherBF_init.
655 */
__rtl_cipherBF_init(CipherContextBF * ctx,rtlCipherMode eMode,const sal_uInt8 * pKeyData,sal_Size nKeyLen,const sal_uInt8 * pArgData,sal_Size nArgLen)656 static rtlCipherError __rtl_cipherBF_init (
657 CipherContextBF *ctx,
658 rtlCipherMode eMode,
659 const sal_uInt8 *pKeyData, sal_Size nKeyLen,
660 const sal_uInt8 *pArgData, sal_Size nArgLen)
661 {
662 CipherKeyBF *key;
663 sal_uInt32 D, DL, DR;
664 sal_uInt16 i, j, k;
665
666 key = &(ctx->m_key);
667
668 rtl_copyMemory (key, &__rtl_cipherBF_key, sizeof (CipherKeyBF));
669 rtl_zeroMemory (&(ctx->m_iv), sizeof(ctx->m_iv));
670 ctx->m_offset = 0;
671
672 for (i = 0, k = 0; i < CIPHER_ROUNDS_BF + 2; ++i)
673 {
674 D = 0;
675 for (j = 0; j < 4; ++j)
676 {
677 D = ((D << 8) | pKeyData[k]);
678 k++;
679 if (k >= nKeyLen)
680 k = 0;
681 }
682 key->m_P[i] ^= D;
683 }
684
685 DL = 0;
686 DR = 0;
687
688 for (i = 0; i < CIPHER_ROUNDS_BF + 2; i += 2)
689 {
690 __rtl_cipherBF_encode (key, &DL, &DR);
691 key->m_P[i ] = DL;
692 key->m_P[i + 1] = DR;
693 }
694
695 for (i = 0; i < 4; ++i)
696 {
697 for (k = 0; k < 256; k += 2)
698 {
699 __rtl_cipherBF_encode (key, &DL, &DR);
700 key->m_S[i][k ] = DL;
701 key->m_S[i][k + 1] = DR;
702 }
703 }
704
705 if (pArgData && nArgLen)
706 {
707 nArgLen = ((nArgLen < 8) ? nArgLen : 8);
708 if (eMode == rtl_Cipher_ModeStream)
709 {
710 rtl_copyMemory (ctx->m_iv.m_byte, pArgData, nArgLen);
711 }
712 else
713 {
714 RTL_CIPHER_NTOHL64 (pArgData, DL, DR, nArgLen);
715 ctx->m_iv.m_long[0] = DL;
716 ctx->m_iv.m_long[1] = DR;
717 }
718 }
719
720 D = DL = DR = 0;
721 return rtl_Cipher_E_None;
722 }
723
724 /*
725 * __rtl_cipherBF_update.
726 */
__rtl_cipherBF_update(CipherContextBF * ctx,rtlCipherMode eMode,rtlCipherDirection eDirection,const sal_uInt8 * pData,sal_Size nDatLen,sal_uInt8 * pBuffer,sal_Size nBufLen)727 static rtlCipherError __rtl_cipherBF_update (
728 CipherContextBF *ctx,
729 rtlCipherMode eMode,
730 rtlCipherDirection eDirection,
731 const sal_uInt8 *pData, sal_Size nDatLen,
732 sal_uInt8 *pBuffer, sal_Size nBufLen)
733 {
734 /* Check arguments. */
735 if ((pData == NULL) || (pBuffer == NULL))
736 return rtl_Cipher_E_Argument;
737
738 if (!((0 < nDatLen) && (nDatLen <= nBufLen)))
739 return rtl_Cipher_E_BufferSize;
740
741 /* Update. */
742 if (eMode == rtl_Cipher_ModeECB)
743 {
744 /* Block mode. */
745 while (nDatLen > 8)
746 {
747 __rtl_cipherBF_updateECB (ctx, eDirection, pData, pBuffer, 8);
748 nDatLen -= 8;
749 pData += 8;
750 pBuffer += 8;
751 }
752 __rtl_cipherBF_updateECB (ctx, eDirection, pData, pBuffer, nDatLen);
753 }
754 else if (eMode == rtl_Cipher_ModeCBC)
755 {
756 /* Block mode. */
757 while (nDatLen > 8)
758 {
759 __rtl_cipherBF_updateCBC (ctx, eDirection, pData, pBuffer, 8);
760 nDatLen -= 8;
761 pData += 8;
762 pBuffer += 8;
763 }
764 __rtl_cipherBF_updateCBC (ctx, eDirection, pData, pBuffer, nDatLen);
765 }
766 else
767 {
768 /* Stream mode. */
769 while (nDatLen > 0)
770 {
771 __rtl_cipherBF_updateCFB (ctx, eDirection, pData, pBuffer);
772 nDatLen -= 1;
773 pData += 1;
774 pBuffer += 1;
775 }
776 }
777 return rtl_Cipher_E_None;
778 }
779
780 /*
781 * __rtl_cipherBF_updateECB.
782 */
__rtl_cipherBF_updateECB(CipherContextBF * ctx,rtlCipherDirection direction,const sal_uInt8 * pData,sal_uInt8 * pBuffer,sal_Size nLength)783 static void __rtl_cipherBF_updateECB (
784 CipherContextBF *ctx,
785 rtlCipherDirection direction,
786 const sal_uInt8 *pData,
787 sal_uInt8 *pBuffer,
788 sal_Size nLength)
789 {
790 CipherKeyBF *key;
791 sal_uInt32 DL, DR;
792
793 key = &(ctx->m_key);
794 if (direction == rtl_Cipher_DirectionEncode)
795 {
796 RTL_CIPHER_NTOHL64(pData, DL, DR, nLength);
797
798 __rtl_cipherBF_encode (key, &DL, &DR);
799
800 RTL_CIPHER_HTONL(DL, pBuffer);
801 RTL_CIPHER_HTONL(DR, pBuffer);
802 }
803 else
804 {
805 RTL_CIPHER_NTOHL(pData, DL);
806 RTL_CIPHER_NTOHL(pData, DR);
807
808 __rtl_cipherBF_decode (key, &DL, &DR);
809
810 RTL_CIPHER_HTONL64(DL, DR, pBuffer, nLength);
811 }
812 DL = DR = 0;
813 }
814
815 /*
816 * __rtl_cipherBF_updateCBC.
817 */
__rtl_cipherBF_updateCBC(CipherContextBF * ctx,rtlCipherDirection direction,const sal_uInt8 * pData,sal_uInt8 * pBuffer,sal_Size nLength)818 static void __rtl_cipherBF_updateCBC (
819 CipherContextBF *ctx,
820 rtlCipherDirection direction,
821 const sal_uInt8 *pData,
822 sal_uInt8 *pBuffer,
823 sal_Size nLength)
824 {
825 CipherKeyBF *key;
826 sal_uInt32 DL, DR;
827
828 key = &(ctx->m_key);
829 if (direction == rtl_Cipher_DirectionEncode)
830 {
831 RTL_CIPHER_NTOHL64(pData, DL, DR, nLength);
832
833 DL ^= ctx->m_iv.m_long[0];
834 DR ^= ctx->m_iv.m_long[1];
835
836 __rtl_cipherBF_encode (key, &DL, &DR);
837
838 ctx->m_iv.m_long[0] = DL;
839 ctx->m_iv.m_long[1] = DR;
840
841 RTL_CIPHER_HTONL(DL, pBuffer);
842 RTL_CIPHER_HTONL(DR, pBuffer);
843 }
844 else
845 {
846 sal_uInt32 IVL, IVR;
847
848 RTL_CIPHER_NTOHL(pData, DL);
849 RTL_CIPHER_NTOHL(pData, DR);
850
851 IVL = DL;
852 IVR = DR;
853
854 __rtl_cipherBF_decode (key, &DL, &DR);
855
856 DL ^= ctx->m_iv.m_long[0];
857 DR ^= ctx->m_iv.m_long[1];
858
859 ctx->m_iv.m_long[0] = IVL;
860 ctx->m_iv.m_long[1] = IVR;
861
862 RTL_CIPHER_HTONL64(DL, DR, pBuffer, nLength);
863 IVL = IVR = 0;
864 }
865 DL = DR = 0;
866 }
867
868 /*
869 * __rtl_cipherBF_updateCFB.
870 */
__rtl_cipherBF_updateCFB(CipherContextBF * ctx,rtlCipherDirection direction,const sal_uInt8 * pData,sal_uInt8 * pBuffer)871 static void __rtl_cipherBF_updateCFB (
872 CipherContextBF *ctx,
873 rtlCipherDirection direction,
874 const sal_uInt8 *pData,
875 sal_uInt8 *pBuffer)
876 {
877 sal_uInt8 *iv;
878 sal_uInt32 k;
879
880 iv = ctx->m_iv.m_byte;
881 k = ctx->m_offset;
882
883 if (k == 0)
884 {
885 sal_uInt32 IVL, IVR;
886
887 RTL_CIPHER_NTOHL64(iv, IVL, IVR, 8);
888 __rtl_cipherBF_encode (&(ctx->m_key), &IVL, &IVR);
889 RTL_CIPHER_HTONL64(IVL, IVR, iv, 8);
890
891 IVL = IVR = 0;
892 }
893
894 if (direction == rtl_Cipher_DirectionEncode)
895 {
896 iv[k] ^= *pData;
897 *pBuffer = iv[k];
898 }
899 else
900 {
901 sal_uInt8 c = iv[k];
902 iv[k] = *pData;
903 *pBuffer = *pData ^ c;
904 c = 0;
905 }
906
907 ctx->m_offset = ((k + 1) & 0x07);
908 iv = NULL;
909 }
910
911 /*
912 * __rtl_cipherBF_encode.
913 */
__rtl_cipherBF_encode(CipherKeyBF * key,sal_uInt32 * xl,sal_uInt32 * xr)914 static void __rtl_cipherBF_encode (
915 CipherKeyBF *key, sal_uInt32 *xl, sal_uInt32 *xr)
916 {
917 sal_uInt32 t, XL, XR;
918 sal_uInt16 i;
919
920 XL = *xl;
921 XR = *xr;
922
923 for (i = 0; i < CIPHER_ROUNDS_BF; ++i)
924 {
925 XL ^= key->m_P[i];
926 XR ^= __rtl_cipherBF (key, XL);
927
928 t = XL;
929 XL = XR;
930 XR = t;
931 }
932
933 t = XL;
934 XL = XR;
935 XR = t;
936
937 XR ^= key->m_P[CIPHER_ROUNDS_BF ];
938 XL ^= key->m_P[CIPHER_ROUNDS_BF + 1];
939
940 *xl = XL;
941 *xr = XR;
942
943 t = XL = XR = 0;
944 }
945
946 /*
947 * __rtl_cipherBF_decode.
948 */
__rtl_cipherBF_decode(CipherKeyBF * key,sal_uInt32 * xl,sal_uInt32 * xr)949 static void __rtl_cipherBF_decode (
950 CipherKeyBF *key, sal_uInt32 *xl, sal_uInt32 *xr)
951 {
952 sal_uInt32 t, XL, XR;
953 sal_uInt16 i;
954
955 XL = *xl;
956 XR = *xr;
957
958 for (i = CIPHER_ROUNDS_BF + 1; i > 1; --i)
959 {
960 XL ^= key->m_P[i];
961 XR ^= __rtl_cipherBF (key, XL);
962
963 t = XL;
964 XL = XR;
965 XR = t;
966 }
967
968 t = XL;
969 XL = XR;
970 XR = t;
971
972 XR ^= key->m_P[1];
973 XL ^= key->m_P[0];
974
975 *xl = XL;
976 *xr = XR;
977
978 t = XL = XR = 0;
979 }
980
981 /*
982 * __rtl_cipherBF.
983 */
__rtl_cipherBF(CipherKeyBF * key,sal_uInt32 x)984 static sal_uInt32 __rtl_cipherBF (CipherKeyBF *key, sal_uInt32 x)
985 {
986 sal_uInt16 a, b, c, d;
987 sal_uInt32 y;
988
989 d = (sal_uInt16)(x & 0x00ff);
990 x >>= 8;
991 c = (sal_uInt16)(x & 0x00ff);
992 x >>= 8;
993 b = (sal_uInt16)(x & 0x00ff);
994 x >>= 8;
995 a = (sal_uInt16)(x & 0x00ff);
996
997 y = key->m_S[0][a];
998 y += key->m_S[1][b];
999 y ^= key->m_S[2][c];
1000 y += key->m_S[3][d];
1001
1002 return y;
1003 }
1004
1005 /*========================================================================
1006 *
1007 * rtl_cipherBF (Blowfish) implementation.
1008 *
1009 * Reference:
1010 * Bruce Schneier: Applied Cryptography, 2nd edition, ch. 14.3
1011 *
1012 *======================================================================*/
1013 /*
1014 * rtl_cipher_createBF.
1015 */
rtl_cipher_createBF(rtlCipherMode Mode)1016 rtlCipher SAL_CALL rtl_cipher_createBF (rtlCipherMode Mode)
1017 {
1018 CipherBF_Impl *pImpl = (CipherBF_Impl*)NULL;
1019
1020 if (Mode == rtl_Cipher_ModeInvalid)
1021 return ((rtlCipher)NULL);
1022
1023 pImpl = ((CipherBF_Impl*)rtl_allocateZeroMemory (sizeof (CipherBF_Impl)));
1024 if (pImpl)
1025 {
1026 pImpl->m_cipher.m_algorithm = rtl_Cipher_AlgorithmBF;
1027 pImpl->m_cipher.m_direction = rtl_Cipher_DirectionInvalid;
1028 pImpl->m_cipher.m_mode = Mode;
1029
1030 pImpl->m_cipher.m_init = rtl_cipher_initBF;
1031 pImpl->m_cipher.m_encode = rtl_cipher_encodeBF;
1032 pImpl->m_cipher.m_decode = rtl_cipher_decodeBF;
1033 pImpl->m_cipher.m_delete = rtl_cipher_destroyBF;
1034 }
1035 return ((rtlCipher)pImpl);
1036 }
1037
1038 /*
1039 * rtl_cipher_initBF.
1040 */
rtl_cipher_initBF(rtlCipher Cipher,rtlCipherDirection Direction,const sal_uInt8 * pKeyData,sal_Size nKeyLen,const sal_uInt8 * pArgData,sal_Size nArgLen)1041 rtlCipherError SAL_CALL rtl_cipher_initBF (
1042 rtlCipher Cipher,
1043 rtlCipherDirection Direction,
1044 const sal_uInt8 *pKeyData, sal_Size nKeyLen,
1045 const sal_uInt8 *pArgData, sal_Size nArgLen)
1046 {
1047 CipherBF_Impl *pImpl = (CipherBF_Impl*)Cipher;
1048
1049 if ((pImpl == NULL) || (pKeyData == NULL))
1050 return rtl_Cipher_E_Argument;
1051
1052 if (!(pImpl->m_cipher.m_algorithm == rtl_Cipher_AlgorithmBF))
1053 return rtl_Cipher_E_Algorithm;
1054
1055 if (!(Direction == rtl_Cipher_DirectionInvalid))
1056 pImpl->m_cipher.m_direction = Direction;
1057 else
1058 return rtl_Cipher_E_Direction;
1059
1060 return __rtl_cipherBF_init (
1061 &(pImpl->m_context), pImpl->m_cipher.m_mode,
1062 pKeyData, nKeyLen, pArgData, nArgLen);
1063 }
1064
1065 /*
1066 * rtl_cipher_encodeBF.
1067 */
rtl_cipher_encodeBF(rtlCipher Cipher,const void * pData,sal_Size nDatLen,sal_uInt8 * pBuffer,sal_Size nBufLen)1068 rtlCipherError SAL_CALL rtl_cipher_encodeBF (
1069 rtlCipher Cipher,
1070 const void *pData, sal_Size nDatLen,
1071 sal_uInt8 *pBuffer, sal_Size nBufLen)
1072 {
1073 CipherBF_Impl *pImpl = (CipherBF_Impl*)Cipher;
1074 if (pImpl == NULL)
1075 return rtl_Cipher_E_Argument;
1076
1077 if (!(pImpl->m_cipher.m_algorithm == rtl_Cipher_AlgorithmBF))
1078 return rtl_Cipher_E_Algorithm;
1079
1080 if (pImpl->m_cipher.m_direction == rtl_Cipher_DirectionInvalid)
1081 return rtl_Cipher_E_Direction;
1082 if (pImpl->m_cipher.m_direction == rtl_Cipher_DirectionDecode)
1083 return rtl_Cipher_E_Direction;
1084
1085 return __rtl_cipherBF_update (
1086 &(pImpl->m_context), pImpl->m_cipher.m_mode,
1087 rtl_Cipher_DirectionEncode,
1088 (const sal_uInt8*)pData, nDatLen, pBuffer, nBufLen);
1089 }
1090
1091 /*
1092 * rtl_cipher_decodeBF.
1093 */
rtl_cipher_decodeBF(rtlCipher Cipher,const void * pData,sal_Size nDatLen,sal_uInt8 * pBuffer,sal_Size nBufLen)1094 rtlCipherError SAL_CALL rtl_cipher_decodeBF (
1095 rtlCipher Cipher,
1096 const void *pData, sal_Size nDatLen,
1097 sal_uInt8 *pBuffer, sal_Size nBufLen)
1098 {
1099 CipherBF_Impl *pImpl = (CipherBF_Impl*)Cipher;
1100 if (pImpl == NULL)
1101 return rtl_Cipher_E_Argument;
1102
1103 if (!(pImpl->m_cipher.m_algorithm == rtl_Cipher_AlgorithmBF))
1104 return rtl_Cipher_E_Algorithm;
1105
1106 if (pImpl->m_cipher.m_direction == rtl_Cipher_DirectionInvalid)
1107 return rtl_Cipher_E_Direction;
1108 if (pImpl->m_cipher.m_direction == rtl_Cipher_DirectionEncode)
1109 return rtl_Cipher_E_Direction;
1110
1111 return __rtl_cipherBF_update (
1112 &(pImpl->m_context), pImpl->m_cipher.m_mode,
1113 rtl_Cipher_DirectionDecode,
1114 (const sal_uInt8*)pData, nDatLen, pBuffer, nBufLen);
1115 }
1116
1117 /*
1118 * rtl_cipher_destroyBF.
1119 */
rtl_cipher_destroyBF(rtlCipher Cipher)1120 void SAL_CALL rtl_cipher_destroyBF (rtlCipher Cipher)
1121 {
1122 CipherBF_Impl *pImpl = (CipherBF_Impl*)Cipher;
1123 if (pImpl)
1124 {
1125 if (pImpl->m_cipher.m_algorithm == rtl_Cipher_AlgorithmBF)
1126 rtl_freeZeroMemory (pImpl, sizeof (CipherBF_Impl));
1127 else
1128 rtl_freeMemory (pImpl);
1129 }
1130 }
1131
1132 /*========================================================================
1133 *
1134 * rtl_cipher_ARCFOUR (RC4) internals.
1135 *
1136 *======================================================================*/
1137 #define CIPHER_CBLOCK_ARCFOUR 256
1138
1139 typedef struct cipherARCFOUR_context_st
1140 {
1141 unsigned int m_S[CIPHER_CBLOCK_ARCFOUR];
1142 unsigned int m_X, m_Y;
1143 } ContextARCFOUR_Impl;
1144
1145 typedef struct cipherARCFOUR_impl_st
1146 {
1147 Cipher_Impl m_cipher;
1148 ContextARCFOUR_Impl m_context;
1149 } CipherARCFOUR_Impl;
1150
1151 /** rtl_cipherARCFOUR_update_Impl.
1152 */
1153 static rtlCipherError rtl_cipherARCFOUR_update_Impl (
1154 ContextARCFOUR_Impl *ctx,
1155 const sal_uInt8 *pData, sal_Size nDatLen,
1156 sal_uInt8 *pBuffer, sal_Size nBufLen);
1157
1158 /*
1159 * rtl_cipherARCFOUR_init_Impl.
1160 */
rtl_cipherARCFOUR_init_Impl(ContextARCFOUR_Impl * ctx,const sal_uInt8 * pKeyData,sal_Size nKeyLen)1161 static rtlCipherError rtl_cipherARCFOUR_init_Impl (
1162 ContextARCFOUR_Impl *ctx,
1163 const sal_uInt8 *pKeyData, sal_Size nKeyLen)
1164 {
1165 unsigned int K[CIPHER_CBLOCK_ARCFOUR];
1166 unsigned int *L, *S;
1167 unsigned int x, y, t;
1168 sal_Size n, k;
1169
1170 S = &(ctx->m_S[0]);
1171
1172 /* Initialize S linearly. */
1173 for (x = 0; x < CIPHER_CBLOCK_ARCFOUR; x++)
1174 S[x] = x;
1175
1176 /* Initialize K with key, repeat key as necessary. */
1177 for (L = K, n = CIPHER_CBLOCK_ARCFOUR; n > nKeyLen; n -= nKeyLen)
1178 {
1179 for (k = 0; k < nKeyLen; k++) L[k] = pKeyData[k];
1180 L += nKeyLen;
1181 }
1182 for (k = 0; k < n; k++) L[k] = pKeyData[k];
1183
1184 /* Initialize S with K. */
1185 for (x = 0, y = 0; x < CIPHER_CBLOCK_ARCFOUR; x++)
1186 {
1187 y = (y + S[x] + K[x]) % CIPHER_CBLOCK_ARCFOUR;
1188 t = S[x], S[x] = S[y], S[y] = t; /* swap S[x] and S[y] */
1189 }
1190
1191 /* Initialize counters X and Y. */
1192 ctx->m_X = 0;
1193 ctx->m_Y = 0;
1194
1195 return rtl_Cipher_E_None;
1196 }
1197
1198 /*
1199 * rtl_cipherARCFOUR_update_Impl.
1200 */
rtl_cipherARCFOUR_update_Impl(ContextARCFOUR_Impl * ctx,const sal_uInt8 * pData,sal_Size nDatLen,sal_uInt8 * pBuffer,sal_Size nBufLen)1201 static rtlCipherError rtl_cipherARCFOUR_update_Impl (
1202 ContextARCFOUR_Impl *ctx,
1203 const sal_uInt8 *pData, sal_Size nDatLen,
1204 sal_uInt8 *pBuffer, sal_Size nBufLen)
1205 {
1206 register unsigned int *S;
1207 register unsigned int x, y, t;
1208 sal_Size k;
1209
1210 /* Check arguments. */
1211 if ((pData == NULL) || (pBuffer == NULL))
1212 return rtl_Cipher_E_Argument;
1213
1214 if (!((0 < nDatLen) && (nDatLen <= nBufLen)))
1215 return rtl_Cipher_E_BufferSize;
1216
1217 /* Update. */
1218 S = &(ctx->m_S[0]);
1219 for (k = 0; k < nDatLen; k++)
1220 {
1221 /* Update counters X and Y. */
1222 x = ctx->m_X;
1223 y = ctx->m_Y;
1224 x = (x + 1 ) % CIPHER_CBLOCK_ARCFOUR;
1225 y = (y + S[x]) % CIPHER_CBLOCK_ARCFOUR;
1226 ctx->m_X = x;
1227 ctx->m_Y = y;
1228
1229 /* Swap S[x] and S[y]. */
1230 t = S[x], S[x] = S[y], S[y] = t;
1231
1232 /* Evaluate next key byte S[t]. */
1233 t = (S[x] + S[y]) % CIPHER_CBLOCK_ARCFOUR;
1234 pBuffer[k] = pData[k] ^ ((sal_uInt8)(S[t] & 0xff));
1235 }
1236
1237 return rtl_Cipher_E_None;
1238 }
1239
1240 /*========================================================================
1241 *
1242 * rtl_cipher_ARCFOUR (RC4) implementation.
1243 *
1244 * Reference:
1245 * Bruce Schneier: Applied Cryptography, 2nd edition, ch. 17.1
1246 *
1247 *======================================================================*/
1248 /*
1249 * rtl_cipher_createARCFOUR.
1250 */
rtl_cipher_createARCFOUR(rtlCipherMode Mode)1251 rtlCipher SAL_CALL rtl_cipher_createARCFOUR (rtlCipherMode Mode)
1252 {
1253 CipherARCFOUR_Impl *pImpl = (CipherARCFOUR_Impl*)NULL;
1254
1255 if (!(Mode == rtl_Cipher_ModeStream))
1256 return ((rtlCipher)NULL);
1257
1258 pImpl = ((CipherARCFOUR_Impl*)rtl_allocateZeroMemory (sizeof (CipherARCFOUR_Impl)));
1259 if (pImpl)
1260 {
1261 pImpl->m_cipher.m_algorithm = rtl_Cipher_AlgorithmARCFOUR;
1262 pImpl->m_cipher.m_direction = rtl_Cipher_DirectionInvalid;
1263 pImpl->m_cipher.m_mode = rtl_Cipher_ModeStream;
1264
1265 pImpl->m_cipher.m_init = rtl_cipher_initARCFOUR;
1266 pImpl->m_cipher.m_encode = rtl_cipher_encodeARCFOUR;
1267 pImpl->m_cipher.m_decode = rtl_cipher_decodeARCFOUR;
1268 pImpl->m_cipher.m_delete = rtl_cipher_destroyARCFOUR;
1269 }
1270 return ((rtlCipher)pImpl);
1271 }
1272
1273 /*
1274 * rtl_cipher_initARCFOUR.
1275 */
rtl_cipher_initARCFOUR(rtlCipher Cipher,rtlCipherDirection Direction,const sal_uInt8 * pKeyData,sal_Size nKeyLen,const sal_uInt8 * pArgData,sal_Size nArgLen)1276 rtlCipherError SAL_CALL rtl_cipher_initARCFOUR (
1277 rtlCipher Cipher,
1278 rtlCipherDirection Direction,
1279 const sal_uInt8 *pKeyData, sal_Size nKeyLen,
1280 const sal_uInt8 *pArgData, sal_Size nArgLen)
1281 {
1282 CipherARCFOUR_Impl *pImpl = (CipherARCFOUR_Impl*)Cipher;
1283 (void) pArgData; // avoid warning
1284 (void) nArgLen; // avoid warning
1285
1286 if ((pImpl == NULL) || (pKeyData == NULL))
1287 return rtl_Cipher_E_Argument;
1288
1289 if (!(pImpl->m_cipher.m_algorithm == rtl_Cipher_AlgorithmARCFOUR))
1290 return rtl_Cipher_E_Algorithm;
1291
1292 if (!(Direction == rtl_Cipher_DirectionInvalid))
1293 pImpl->m_cipher.m_direction = Direction;
1294 else
1295 return rtl_Cipher_E_Direction;
1296
1297 return rtl_cipherARCFOUR_init_Impl (&(pImpl->m_context), pKeyData, nKeyLen);
1298 }
1299
1300 /*
1301 * rtl_cipher_encodeARCFOUR.
1302 */
rtl_cipher_encodeARCFOUR(rtlCipher Cipher,const void * pData,sal_Size nDatLen,sal_uInt8 * pBuffer,sal_Size nBufLen)1303 rtlCipherError SAL_CALL rtl_cipher_encodeARCFOUR (
1304 rtlCipher Cipher,
1305 const void *pData, sal_Size nDatLen,
1306 sal_uInt8 *pBuffer, sal_Size nBufLen)
1307 {
1308 CipherARCFOUR_Impl *pImpl = (CipherARCFOUR_Impl*)Cipher;
1309 if (pImpl == NULL)
1310 return rtl_Cipher_E_Argument;
1311
1312 if (!(pImpl->m_cipher.m_algorithm == rtl_Cipher_AlgorithmARCFOUR))
1313 return rtl_Cipher_E_Algorithm;
1314
1315 if (pImpl->m_cipher.m_direction == rtl_Cipher_DirectionInvalid)
1316 return rtl_Cipher_E_Direction;
1317
1318 return rtl_cipherARCFOUR_update_Impl (
1319 &(pImpl->m_context),
1320 (const sal_uInt8*)pData, nDatLen, pBuffer, nBufLen);
1321 }
1322
1323 /*
1324 * rtl_cipher_decodeARCFOUR.
1325 */
rtl_cipher_decodeARCFOUR(rtlCipher Cipher,const void * pData,sal_Size nDatLen,sal_uInt8 * pBuffer,sal_Size nBufLen)1326 rtlCipherError SAL_CALL rtl_cipher_decodeARCFOUR (
1327 rtlCipher Cipher,
1328 const void *pData, sal_Size nDatLen,
1329 sal_uInt8 *pBuffer, sal_Size nBufLen)
1330 {
1331 CipherARCFOUR_Impl *pImpl = (CipherARCFOUR_Impl*)Cipher;
1332 if (pImpl == NULL)
1333 return rtl_Cipher_E_Argument;
1334
1335 if (!(pImpl->m_cipher.m_algorithm == rtl_Cipher_AlgorithmARCFOUR))
1336 return rtl_Cipher_E_Algorithm;
1337
1338 if (pImpl->m_cipher.m_direction == rtl_Cipher_DirectionInvalid)
1339 return rtl_Cipher_E_Direction;
1340
1341 return rtl_cipherARCFOUR_update_Impl (
1342 &(pImpl->m_context),
1343 (const sal_uInt8*)pData, nDatLen, pBuffer, nBufLen);
1344 }
1345
1346 /*
1347 * rtl_cipher_destroyARCFOUR.
1348 */
rtl_cipher_destroyARCFOUR(rtlCipher Cipher)1349 void SAL_CALL rtl_cipher_destroyARCFOUR (rtlCipher Cipher)
1350 {
1351 CipherARCFOUR_Impl *pImpl = (CipherARCFOUR_Impl*)Cipher;
1352 if (pImpl)
1353 {
1354 if (pImpl->m_cipher.m_algorithm == rtl_Cipher_AlgorithmARCFOUR)
1355 rtl_freeZeroMemory (pImpl, sizeof (CipherARCFOUR_Impl));
1356 else
1357 rtl_freeMemory (pImpl);
1358 }
1359 }
1360