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cee5a30d | 1 | //----------------------------------------------------------------------------- |
2 | // Gerhard de Koning Gans - May 2008 | |
3 | // Hagen Fritsch - June 2010 | |
4 | // Gerhard de Koning Gans - May 2011 | |
1e262141 | 5 | // Gerhard de Koning Gans - June 2012 - Added iClass card and reader emulation |
cee5a30d | 6 | // |
7 | // This code is licensed to you under the terms of the GNU GPL, version 2 or, | |
8 | // at your option, any later version. See the LICENSE.txt file for the text of | |
9 | // the license. | |
10 | //----------------------------------------------------------------------------- | |
11 | // Routines to support iClass. | |
12 | //----------------------------------------------------------------------------- | |
13 | // Based on ISO14443a implementation. Still in experimental phase. | |
14 | // Contribution made during a security research at Radboud University Nijmegen | |
17505ce2 | 15 | // |
cee5a30d | 16 | // Please feel free to contribute and extend iClass support!! |
17 | //----------------------------------------------------------------------------- | |
18 | // | |
cee5a30d | 19 | // FIX: |
20 | // ==== | |
21 | // We still have sometimes a demodulation error when snooping iClass communication. | |
22 | // The resulting trace of a read-block-03 command may look something like this: | |
23 | // | |
17505ce2 | 24 | // + 22279: : 0c 03 e8 01 |
cee5a30d | 25 | // |
26 | // ...with an incorrect answer... | |
27 | // | |
28 | // + 85: 0: TAG ff! ff! ff! ff! ff! ff! ff! ff! bb 33 bb 00 01! 0e! 04! bb !crc | |
29 | // | |
30 | // We still left the error signalling bytes in the traces like 0xbb | |
31 | // | |
32 | // A correct trace should look like this: | |
33 | // | |
17505ce2 | 34 | // + 21112: : 0c 03 e8 01 |
35 | // + 85: 0: TAG ff ff ff ff ff ff ff ff ea f5 | |
cee5a30d | 36 | // |
37 | //----------------------------------------------------------------------------- | |
38 | ||
17505ce2 | 39 | #include "iclass.h" |
40 | ||
cee5a30d | 41 | #include "proxmark3.h" |
42 | #include "apps.h" | |
43 | #include "util.h" | |
44 | #include "string.h" | |
3d2c9c9b | 45 | #include "printf.h" |
7e67e42f | 46 | #include "common.h" |
fecd8202 | 47 | #include "cmd.h" |
6e49717b | 48 | #include "iso14443a.h" |
3d2c9c9b | 49 | #include "iso15693.h" |
1e262141 | 50 | // Needed for CRC in emulation mode; |
51 | // same construction as in ISO 14443; | |
52 | // different initial value (CRC_ICLASS) | |
53 | #include "iso14443crc.h" | |
c3963755 | 54 | #include "iso15693tools.h" |
b67f7ec3 | 55 | #include "protocols.h" |
10a8875c | 56 | #include "optimized_cipher.h" |
979c7655 | 57 | #include "usb_cdc.h" // for usb_poll_validate_length |
fc52fbd4 | 58 | #include "fpgaloader.h" |
10a8875c | 59 | |
8efd0b80 | 60 | // iCLASS has a slightly different timing compared to ISO15693. According to the picopass data sheet the tag response is expected 330us after |
61 | // the reader command. This is measured from end of reader EOF to first modulation of the tag's SOF which starts with a 56,64us unmodulated period. | |
62 | // 330us = 140 ssp_clk cycles @ 423,75kHz when simulating. | |
63 | // 56,64us = 24 ssp_clk_cycles | |
c41dd5f9 | 64 | #define DELAY_ICLASS_VCD_TO_VICC_SIM (140 - 24) |
65 | // times in ssp_clk_cycles @ 3,3625MHz when acting as reader | |
ece38ef3 | 66 | #define DELAY_ICLASS_VICC_TO_VCD_READER DELAY_ISO15693_VICC_TO_VCD_READER |
c41dd5f9 | 67 | // times in samples @ 212kHz when acting as reader |
ece38ef3 | 68 | #define ICLASS_READER_TIMEOUT_ACTALL 330 // 1558us, nominal 330us + 7slots*160us = 1450us |
496bb4be | 69 | #define ICLASS_READER_TIMEOUT_UPDATE 3390 // 16000us, nominal 4-15ms |
c41dd5f9 | 70 | #define ICLASS_READER_TIMEOUT_OTHERS 80 // 380us, nominal 330us |
71 | ||
8efd0b80 | 72 | |
cee5a30d | 73 | //----------------------------------------------------------------------------- |
74 | // The software UART that receives commands from the reader, and its state | |
75 | // variables. | |
76 | //----------------------------------------------------------------------------- | |
77 | static struct { | |
17505ce2 | 78 | enum { |
79 | STATE_UNSYNCD, | |
80 | STATE_START_OF_COMMUNICATION, | |
81 | STATE_RECEIVING | |
82 | } state; | |
83 | uint16_t shiftReg; | |
84 | int bitCnt; | |
85 | int byteCnt; | |
86 | int byteCntMax; | |
87 | int posCnt; | |
88 | int nOutOfCnt; | |
89 | int OutOfCnt; | |
90 | int syncBit; | |
91 | int samples; | |
92 | int highCnt; | |
93 | int swapper; | |
94 | int counter; | |
95 | int bitBuffer; | |
96 | int dropPosition; | |
97 | uint8_t *output; | |
cee5a30d | 98 | } Uart; |
99 | ||
17505ce2 | 100 | static RAMFUNC int OutOfNDecoding(int bit) { |
9f693930 | 101 | //int error = 0; |
cee5a30d | 102 | int bitright; |
103 | ||
17505ce2 | 104 | if (!Uart.bitBuffer) { |
cee5a30d | 105 | Uart.bitBuffer = bit ^ 0xFF0; |
44964fd1 | 106 | return false; |
17505ce2 | 107 | } else { |
cee5a30d | 108 | Uart.bitBuffer <<= 4; |
109 | Uart.bitBuffer ^= bit; | |
110 | } | |
17505ce2 | 111 | |
112 | /*if (Uart.swapper) { | |
cee5a30d | 113 | Uart.output[Uart.byteCnt] = Uart.bitBuffer & 0xFF; |
114 | Uart.byteCnt++; | |
115 | Uart.swapper = 0; | |
17505ce2 | 116 | if (Uart.byteCnt > 15) { return true; } |
cee5a30d | 117 | } |
118 | else { | |
119 | Uart.swapper = 1; | |
120 | }*/ | |
121 | ||
17505ce2 | 122 | if (Uart.state != STATE_UNSYNCD) { |
cee5a30d | 123 | Uart.posCnt++; |
124 | ||
17505ce2 | 125 | if ((Uart.bitBuffer & Uart.syncBit) ^ Uart.syncBit) { |
cee5a30d | 126 | bit = 0x00; |
17505ce2 | 127 | } else { |
cee5a30d | 128 | bit = 0x01; |
129 | } | |
17505ce2 | 130 | if (((Uart.bitBuffer << 1) & Uart.syncBit) ^ Uart.syncBit) { |
cee5a30d | 131 | bitright = 0x00; |
17505ce2 | 132 | } else { |
cee5a30d | 133 | bitright = 0x01; |
134 | } | |
17505ce2 | 135 | if (bit != bitright) { |
136 | bit = bitright; | |
137 | } | |
138 | ||
cee5a30d | 139 | |
cee5a30d | 140 | // So, now we only have to deal with *bit*, lets see... |
17505ce2 | 141 | if (Uart.posCnt == 1) { |
cee5a30d | 142 | // measurement first half bitperiod |
17505ce2 | 143 | if (!bit) { |
cee5a30d | 144 | // Drop in first half means that we are either seeing |
145 | // an SOF or an EOF. | |
146 | ||
17505ce2 | 147 | if (Uart.nOutOfCnt == 1) { |
cee5a30d | 148 | // End of Communication |
149 | Uart.state = STATE_UNSYNCD; | |
150 | Uart.highCnt = 0; | |
17505ce2 | 151 | if (Uart.byteCnt == 0) { |
cee5a30d | 152 | // Its not straightforward to show single EOFs |
44964fd1 | 153 | // So just leave it and do not return true |
6a1f2d82 | 154 | Uart.output[0] = 0xf0; |
cee5a30d | 155 | Uart.byteCnt++; |
17505ce2 | 156 | } else { |
44964fd1 | 157 | return true; |
cee5a30d | 158 | } |
17505ce2 | 159 | } else if (Uart.state != STATE_START_OF_COMMUNICATION) { |
cee5a30d | 160 | // When not part of SOF or EOF, it is an error |
161 | Uart.state = STATE_UNSYNCD; | |
162 | Uart.highCnt = 0; | |
9f693930 | 163 | //error = 4; |
cee5a30d | 164 | } |
165 | } | |
17505ce2 | 166 | } else { |
cee5a30d | 167 | // measurement second half bitperiod |
168 | // Count the bitslot we are in... (ISO 15693) | |
169 | Uart.nOutOfCnt++; | |
17505ce2 | 170 | |
171 | if (!bit) { | |
172 | if (Uart.dropPosition) { | |
173 | if (Uart.state == STATE_START_OF_COMMUNICATION) { | |
9f693930 | 174 | //error = 1; |
17505ce2 | 175 | } else { |
9f693930 | 176 | //error = 7; |
cee5a30d | 177 | } |
178 | // It is an error if we already have seen a drop in current frame | |
179 | Uart.state = STATE_UNSYNCD; | |
180 | Uart.highCnt = 0; | |
17505ce2 | 181 | } else { |
cee5a30d | 182 | Uart.dropPosition = Uart.nOutOfCnt; |
183 | } | |
184 | } | |
185 | ||
186 | Uart.posCnt = 0; | |
187 | ||
17505ce2 | 188 | |
189 | if (Uart.nOutOfCnt == Uart.OutOfCnt && Uart.OutOfCnt == 4) { | |
cee5a30d | 190 | Uart.nOutOfCnt = 0; |
17505ce2 | 191 | |
192 | if (Uart.state == STATE_START_OF_COMMUNICATION) { | |
193 | if (Uart.dropPosition == 4) { | |
cee5a30d | 194 | Uart.state = STATE_RECEIVING; |
195 | Uart.OutOfCnt = 256; | |
17505ce2 | 196 | } else if (Uart.dropPosition == 3) { |
cee5a30d | 197 | Uart.state = STATE_RECEIVING; |
198 | Uart.OutOfCnt = 4; | |
199 | //Uart.output[Uart.byteCnt] = 0xdd; | |
200 | //Uart.byteCnt++; | |
17505ce2 | 201 | } else { |
cee5a30d | 202 | Uart.state = STATE_UNSYNCD; |
203 | Uart.highCnt = 0; | |
204 | } | |
205 | Uart.dropPosition = 0; | |
17505ce2 | 206 | } else { |
cee5a30d | 207 | // RECEIVING DATA |
208 | // 1 out of 4 | |
17505ce2 | 209 | if (!Uart.dropPosition) { |
cee5a30d | 210 | Uart.state = STATE_UNSYNCD; |
211 | Uart.highCnt = 0; | |
9f693930 | 212 | //error = 9; |
17505ce2 | 213 | } else { |
cee5a30d | 214 | Uart.shiftReg >>= 2; |
17505ce2 | 215 | |
cee5a30d | 216 | // Swap bit order |
217 | Uart.dropPosition--; | |
17505ce2 | 218 | //if (Uart.dropPosition == 1) { Uart.dropPosition = 2; } |
219 | //else if (Uart.dropPosition == 2) { Uart.dropPosition = 1; } | |
220 | ||
cee5a30d | 221 | Uart.shiftReg ^= ((Uart.dropPosition & 0x03) << 6); |
222 | Uart.bitCnt += 2; | |
223 | Uart.dropPosition = 0; | |
224 | ||
17505ce2 | 225 | if (Uart.bitCnt == 8) { |
cee5a30d | 226 | Uart.output[Uart.byteCnt] = (Uart.shiftReg & 0xff); |
227 | Uart.byteCnt++; | |
cee5a30d | 228 | Uart.bitCnt = 0; |
229 | Uart.shiftReg = 0; | |
230 | } | |
231 | } | |
232 | } | |
17505ce2 | 233 | } else if (Uart.nOutOfCnt == Uart.OutOfCnt) { |
cee5a30d | 234 | // RECEIVING DATA |
235 | // 1 out of 256 | |
17505ce2 | 236 | if (!Uart.dropPosition) { |
cee5a30d | 237 | Uart.state = STATE_UNSYNCD; |
238 | Uart.highCnt = 0; | |
9f693930 | 239 | //error = 3; |
17505ce2 | 240 | } else { |
cee5a30d | 241 | Uart.dropPosition--; |
242 | Uart.output[Uart.byteCnt] = (Uart.dropPosition & 0xff); | |
243 | Uart.byteCnt++; | |
cee5a30d | 244 | Uart.bitCnt = 0; |
245 | Uart.shiftReg = 0; | |
246 | Uart.nOutOfCnt = 0; | |
247 | Uart.dropPosition = 0; | |
248 | } | |
249 | } | |
250 | ||
17505ce2 | 251 | /*if (error) { |
cee5a30d | 252 | Uart.output[Uart.byteCnt] = 0xAA; |
253 | Uart.byteCnt++; | |
254 | Uart.output[Uart.byteCnt] = error & 0xFF; | |
255 | Uart.byteCnt++; | |
256 | Uart.output[Uart.byteCnt] = 0xAA; | |
257 | Uart.byteCnt++; | |
258 | Uart.output[Uart.byteCnt] = (Uart.bitBuffer >> 8) & 0xFF; | |
259 | Uart.byteCnt++; | |
260 | Uart.output[Uart.byteCnt] = Uart.bitBuffer & 0xFF; | |
261 | Uart.byteCnt++; | |
262 | Uart.output[Uart.byteCnt] = (Uart.syncBit >> 3) & 0xFF; | |
263 | Uart.byteCnt++; | |
264 | Uart.output[Uart.byteCnt] = 0xAA; | |
265 | Uart.byteCnt++; | |
44964fd1 | 266 | return true; |
cee5a30d | 267 | }*/ |
268 | } | |
269 | ||
17505ce2 | 270 | } else { |
cee5a30d | 271 | bit = Uart.bitBuffer & 0xf0; |
272 | bit >>= 4; | |
273 | bit ^= 0x0F; // drops become 1s ;-) | |
17505ce2 | 274 | if (bit) { |
cee5a30d | 275 | // should have been high or at least (4 * 128) / fc |
276 | // according to ISO this should be at least (9 * 128 + 20) / fc | |
17505ce2 | 277 | if (Uart.highCnt == 8) { |
cee5a30d | 278 | // we went low, so this could be start of communication |
279 | // it turns out to be safer to choose a less significant | |
280 | // syncbit... so we check whether the neighbour also represents the drop | |
281 | Uart.posCnt = 1; // apparently we are busy with our first half bit period | |
282 | Uart.syncBit = bit & 8; | |
283 | Uart.samples = 3; | |
17505ce2 | 284 | if (!Uart.syncBit) { Uart.syncBit = bit & 4; Uart.samples = 2; } |
285 | else if (bit & 4) { Uart.syncBit = bit & 4; Uart.samples = 2; bit <<= 2; } | |
286 | if (!Uart.syncBit) { Uart.syncBit = bit & 2; Uart.samples = 1; } | |
287 | else if (bit & 2) { Uart.syncBit = bit & 2; Uart.samples = 1; bit <<= 1; } | |
288 | if (!Uart.syncBit) { Uart.syncBit = bit & 1; Uart.samples = 0; | |
289 | if (Uart.syncBit && (Uart.bitBuffer & 8)) { | |
cee5a30d | 290 | Uart.syncBit = 8; |
291 | ||
292 | // the first half bit period is expected in next sample | |
293 | Uart.posCnt = 0; | |
294 | Uart.samples = 3; | |
295 | } | |
17505ce2 | 296 | } else if (bit & 1) { Uart.syncBit = bit & 1; Uart.samples = 0; } |
cee5a30d | 297 | |
298 | Uart.syncBit <<= 4; | |
299 | Uart.state = STATE_START_OF_COMMUNICATION; | |
300 | Uart.bitCnt = 0; | |
301 | Uart.byteCnt = 0; | |
cee5a30d | 302 | Uart.nOutOfCnt = 0; |
303 | Uart.OutOfCnt = 4; // Start at 1/4, could switch to 1/256 | |
304 | Uart.dropPosition = 0; | |
305 | Uart.shiftReg = 0; | |
9f693930 | 306 | //error = 0; |
17505ce2 | 307 | } else { |
cee5a30d | 308 | Uart.highCnt = 0; |
309 | } | |
17505ce2 | 310 | } else if (Uart.highCnt < 8) { |
311 | Uart.highCnt++; | |
cee5a30d | 312 | } |
313 | } | |
314 | ||
17505ce2 | 315 | return false; |
cee5a30d | 316 | } |
317 | ||
17505ce2 | 318 | |
cee5a30d | 319 | //============================================================================= |
1e262141 | 320 | // Manchester |
cee5a30d | 321 | //============================================================================= |
322 | ||
323 | static struct { | |
17505ce2 | 324 | enum { |
325 | DEMOD_UNSYNCD, | |
cee5a30d | 326 | DEMOD_START_OF_COMMUNICATION, |
327 | DEMOD_START_OF_COMMUNICATION2, | |
328 | DEMOD_START_OF_COMMUNICATION3, | |
329 | DEMOD_SOF_COMPLETE, | |
330 | DEMOD_MANCHESTER_D, | |
331 | DEMOD_MANCHESTER_E, | |
332 | DEMOD_END_OF_COMMUNICATION, | |
333 | DEMOD_END_OF_COMMUNICATION2, | |
334 | DEMOD_MANCHESTER_F, | |
17505ce2 | 335 | DEMOD_ERROR_WAIT |
336 | } state; | |
337 | int bitCount; | |
338 | int posCount; | |
339 | int syncBit; | |
340 | uint16_t shiftReg; | |
341 | int buffer; | |
342 | int buffer2; | |
343 | int buffer3; | |
344 | int buff; | |
345 | int samples; | |
346 | int len; | |
cee5a30d | 347 | enum { |
348 | SUB_NONE, | |
349 | SUB_FIRST_HALF, | |
350 | SUB_SECOND_HALF, | |
351 | SUB_BOTH | |
17505ce2 | 352 | } sub; |
353 | uint8_t *output; | |
cee5a30d | 354 | } Demod; |
355 | ||
17505ce2 | 356 | static RAMFUNC int ManchesterDecoding(int v) { |
cee5a30d | 357 | int bit; |
358 | int modulation; | |
359 | int error = 0; | |
360 | ||
361 | bit = Demod.buffer; | |
362 | Demod.buffer = Demod.buffer2; | |
363 | Demod.buffer2 = Demod.buffer3; | |
364 | Demod.buffer3 = v; | |
365 | ||
17505ce2 | 366 | if (Demod.buff < 3) { |
cee5a30d | 367 | Demod.buff++; |
44964fd1 | 368 | return false; |
cee5a30d | 369 | } |
370 | ||
17505ce2 | 371 | if (Demod.state==DEMOD_UNSYNCD) { |
cee5a30d | 372 | Demod.output[Demod.len] = 0xfa; |
373 | Demod.syncBit = 0; | |
374 | //Demod.samples = 0; | |
17505ce2 | 375 | Demod.posCount = 1; // This is the first half bit period, so after syncing handle the second part |
cee5a30d | 376 | |
17505ce2 | 377 | if (bit & 0x08) { |
cee5a30d | 378 | Demod.syncBit = 0x08; |
379 | } | |
380 | ||
17505ce2 | 381 | if (bit & 0x04) { |
382 | if (Demod.syncBit) { | |
cee5a30d | 383 | bit <<= 4; |
384 | } | |
385 | Demod.syncBit = 0x04; | |
386 | } | |
387 | ||
17505ce2 | 388 | if (bit & 0x02) { |
389 | if (Demod.syncBit) { | |
cee5a30d | 390 | bit <<= 2; |
391 | } | |
392 | Demod.syncBit = 0x02; | |
393 | } | |
394 | ||
17505ce2 | 395 | if (bit & 0x01 && Demod.syncBit) { |
cee5a30d | 396 | Demod.syncBit = 0x01; |
397 | } | |
17505ce2 | 398 | |
399 | if (Demod.syncBit) { | |
cee5a30d | 400 | Demod.len = 0; |
401 | Demod.state = DEMOD_START_OF_COMMUNICATION; | |
402 | Demod.sub = SUB_FIRST_HALF; | |
403 | Demod.bitCount = 0; | |
404 | Demod.shiftReg = 0; | |
cee5a30d | 405 | Demod.samples = 0; |
17505ce2 | 406 | if (Demod.posCount) { |
0ab9002f | 407 | switch (Demod.syncBit) { |
cee5a30d | 408 | case 0x08: Demod.samples = 3; break; |
409 | case 0x04: Demod.samples = 2; break; | |
410 | case 0x02: Demod.samples = 1; break; | |
411 | case 0x01: Demod.samples = 0; break; | |
412 | } | |
413 | // SOF must be long burst... otherwise stay unsynced!!! | |
17505ce2 | 414 | if (!(Demod.buffer & Demod.syncBit) || !(Demod.buffer2 & Demod.syncBit)) { |
cee5a30d | 415 | Demod.state = DEMOD_UNSYNCD; |
416 | } | |
17505ce2 | 417 | } else { |
cee5a30d | 418 | // SOF must be long burst... otherwise stay unsynced!!! |
17505ce2 | 419 | if (!(Demod.buffer2 & Demod.syncBit) || !(Demod.buffer3 & Demod.syncBit)) { |
cee5a30d | 420 | Demod.state = DEMOD_UNSYNCD; |
421 | error = 0x88; | |
422 | } | |
423 | ||
424 | } | |
425 | error = 0; | |
426 | ||
427 | } | |
17505ce2 | 428 | } else { |
0ab9002f | 429 | // state is DEMOD is in SYNC from here on. |
cee5a30d | 430 | modulation = bit & Demod.syncBit; |
431 | modulation |= ((bit << 1) ^ ((Demod.buffer & 0x08) >> 3)) & Demod.syncBit; | |
cee5a30d | 432 | |
433 | Demod.samples += 4; | |
434 | ||
0ab9002f | 435 | if (Demod.posCount == 0) { |
cee5a30d | 436 | Demod.posCount = 1; |
17505ce2 | 437 | if (modulation) { |
cee5a30d | 438 | Demod.sub = SUB_FIRST_HALF; |
17505ce2 | 439 | } else { |
cee5a30d | 440 | Demod.sub = SUB_NONE; |
441 | } | |
17505ce2 | 442 | } else { |
cee5a30d | 443 | Demod.posCount = 0; |
17505ce2 | 444 | if (modulation) { |
445 | if (Demod.sub == SUB_FIRST_HALF) { | |
cee5a30d | 446 | Demod.sub = SUB_BOTH; |
17505ce2 | 447 | } else { |
cee5a30d | 448 | Demod.sub = SUB_SECOND_HALF; |
449 | } | |
17505ce2 | 450 | } else if (Demod.sub == SUB_NONE) { |
451 | if (Demod.state == DEMOD_SOF_COMPLETE) { | |
cee5a30d | 452 | Demod.output[Demod.len] = 0x0f; |
453 | Demod.len++; | |
cee5a30d | 454 | Demod.state = DEMOD_UNSYNCD; |
44964fd1 | 455 | return true; |
17505ce2 | 456 | } else { |
cee5a30d | 457 | Demod.state = DEMOD_ERROR_WAIT; |
458 | error = 0x33; | |
459 | } | |
cee5a30d | 460 | } |
461 | ||
462 | switch(Demod.state) { | |
463 | case DEMOD_START_OF_COMMUNICATION: | |
17505ce2 | 464 | if (Demod.sub == SUB_BOTH) { |
cee5a30d | 465 | Demod.state = DEMOD_START_OF_COMMUNICATION2; |
466 | Demod.posCount = 1; | |
467 | Demod.sub = SUB_NONE; | |
17505ce2 | 468 | } else { |
cee5a30d | 469 | Demod.output[Demod.len] = 0xab; |
470 | Demod.state = DEMOD_ERROR_WAIT; | |
471 | error = 0xd2; | |
472 | } | |
473 | break; | |
474 | case DEMOD_START_OF_COMMUNICATION2: | |
17505ce2 | 475 | if (Demod.sub == SUB_SECOND_HALF) { |
cee5a30d | 476 | Demod.state = DEMOD_START_OF_COMMUNICATION3; |
17505ce2 | 477 | } else { |
cee5a30d | 478 | Demod.output[Demod.len] = 0xab; |
479 | Demod.state = DEMOD_ERROR_WAIT; | |
480 | error = 0xd3; | |
481 | } | |
482 | break; | |
483 | case DEMOD_START_OF_COMMUNICATION3: | |
17505ce2 | 484 | if (Demod.sub == SUB_SECOND_HALF) { |
cee5a30d | 485 | Demod.state = DEMOD_SOF_COMPLETE; |
17505ce2 | 486 | } else { |
cee5a30d | 487 | Demod.output[Demod.len] = 0xab; |
488 | Demod.state = DEMOD_ERROR_WAIT; | |
489 | error = 0xd4; | |
490 | } | |
491 | break; | |
492 | case DEMOD_SOF_COMPLETE: | |
493 | case DEMOD_MANCHESTER_D: | |
494 | case DEMOD_MANCHESTER_E: | |
495 | // OPPOSITE FROM ISO14443 - 11110000 = 0 (1 in 14443) | |
496 | // 00001111 = 1 (0 in 14443) | |
17505ce2 | 497 | if (Demod.sub == SUB_SECOND_HALF) { // SUB_FIRST_HALF |
cee5a30d | 498 | Demod.bitCount++; |
499 | Demod.shiftReg = (Demod.shiftReg >> 1) ^ 0x100; | |
500 | Demod.state = DEMOD_MANCHESTER_D; | |
17505ce2 | 501 | } else if (Demod.sub == SUB_FIRST_HALF) { // SUB_SECOND_HALF |
cee5a30d | 502 | Demod.bitCount++; |
503 | Demod.shiftReg >>= 1; | |
504 | Demod.state = DEMOD_MANCHESTER_E; | |
17505ce2 | 505 | } else if (Demod.sub == SUB_BOTH) { |
cee5a30d | 506 | Demod.state = DEMOD_MANCHESTER_F; |
17505ce2 | 507 | } else { |
cee5a30d | 508 | Demod.state = DEMOD_ERROR_WAIT; |
509 | error = 0x55; | |
510 | } | |
511 | break; | |
512 | ||
513 | case DEMOD_MANCHESTER_F: | |
514 | // Tag response does not need to be a complete byte! | |
17505ce2 | 515 | if (Demod.len > 0 || Demod.bitCount > 0) { |
516 | if (Demod.bitCount > 1) { // was > 0, do not interpret last closing bit, is part of EOF | |
517 | Demod.shiftReg >>= (9 - Demod.bitCount); // right align data | |
cee5a30d | 518 | Demod.output[Demod.len] = Demod.shiftReg & 0xff; |
519 | Demod.len++; | |
cee5a30d | 520 | } |
521 | ||
522 | Demod.state = DEMOD_UNSYNCD; | |
44964fd1 | 523 | return true; |
17505ce2 | 524 | } else { |
cee5a30d | 525 | Demod.output[Demod.len] = 0xad; |
526 | Demod.state = DEMOD_ERROR_WAIT; | |
527 | error = 0x03; | |
528 | } | |
529 | break; | |
530 | ||
531 | case DEMOD_ERROR_WAIT: | |
532 | Demod.state = DEMOD_UNSYNCD; | |
533 | break; | |
534 | ||
535 | default: | |
536 | Demod.output[Demod.len] = 0xdd; | |
537 | Demod.state = DEMOD_UNSYNCD; | |
538 | break; | |
539 | } | |
540 | ||
17505ce2 | 541 | if (Demod.bitCount >= 8) { |
cee5a30d | 542 | Demod.shiftReg >>= 1; |
543 | Demod.output[Demod.len] = (Demod.shiftReg & 0xff); | |
544 | Demod.len++; | |
cee5a30d | 545 | Demod.bitCount = 0; |
546 | Demod.shiftReg = 0; | |
547 | } | |
548 | ||
17505ce2 | 549 | if (error) { |
cee5a30d | 550 | Demod.output[Demod.len] = 0xBB; |
551 | Demod.len++; | |
552 | Demod.output[Demod.len] = error & 0xFF; | |
553 | Demod.len++; | |
554 | Demod.output[Demod.len] = 0xBB; | |
555 | Demod.len++; | |
556 | Demod.output[Demod.len] = bit & 0xFF; | |
557 | Demod.len++; | |
558 | Demod.output[Demod.len] = Demod.buffer & 0xFF; | |
559 | Demod.len++; | |
560 | // Look harder ;-) | |
561 | Demod.output[Demod.len] = Demod.buffer2 & 0xFF; | |
562 | Demod.len++; | |
563 | Demod.output[Demod.len] = Demod.syncBit & 0xFF; | |
564 | Demod.len++; | |
565 | Demod.output[Demod.len] = 0xBB; | |
566 | Demod.len++; | |
44964fd1 | 567 | return true; |
cee5a30d | 568 | } |
569 | ||
570 | } | |
571 | ||
572 | } // end (state != UNSYNCED) | |
573 | ||
17505ce2 | 574 | return false; |
cee5a30d | 575 | } |
576 | ||
577 | //============================================================================= | |
1e262141 | 578 | // Finally, a `sniffer' for iClass communication |
cee5a30d | 579 | // Both sides of communication! |
580 | //============================================================================= | |
581 | ||
582 | //----------------------------------------------------------------------------- | |
583 | // Record the sequence of commands sent by the reader to the tag, with | |
584 | // triggering so that we start recording at the point that the tag is moved | |
585 | // near the reader. | |
586 | //----------------------------------------------------------------------------- | |
17505ce2 | 587 | void RAMFUNC SnoopIClass(void) { |
cee5a30d | 588 | |
17505ce2 | 589 | // We won't start recording the frames that we acquire until we trigger; |
590 | // a good trigger condition to get started is probably when we see a | |
591 | // response from the tag. | |
592 | //int triggered = false; // false to wait first for card | |
cee5a30d | 593 | |
17505ce2 | 594 | // The command (reader -> tag) that we're receiving. |
cee5a30d | 595 | // The length of a received command will in most cases be no more than 18 bytes. |
596 | // So 32 should be enough! | |
f71f4deb | 597 | #define ICLASS_BUFFER_SIZE 32 |
598 | uint8_t readerToTagCmd[ICLASS_BUFFER_SIZE]; | |
17505ce2 | 599 | // The response (tag -> reader) that we're receiving. |
f71f4deb | 600 | uint8_t tagToReaderResponse[ICLASS_BUFFER_SIZE]; |
17505ce2 | 601 | |
602 | FpgaDownloadAndGo(FPGA_BITSTREAM_HF); | |
603 | ||
604 | // free all BigBuf memory | |
f71f4deb | 605 | BigBuf_free(); |
17505ce2 | 606 | // The DMA buffer, used to stream samples from the FPGA |
607 | uint8_t *dmaBuf = BigBuf_malloc(DMA_BUFFER_SIZE); | |
608 | ||
44964fd1 | 609 | set_tracing(true); |
3000dc4e | 610 | clear_trace(); |
17505ce2 | 611 | iso14a_set_trigger(false); |
cee5a30d | 612 | |
f71f4deb | 613 | int lastRxCounter; |
17505ce2 | 614 | uint8_t *upTo; |
615 | int smpl; | |
616 | int maxBehindBy = 0; | |
cee5a30d | 617 | |
17505ce2 | 618 | // Count of samples received so far, so that we can include timing |
619 | // information in the trace buffer. | |
620 | int samples = 0; | |
621 | rsamples = 0; | |
cee5a30d | 622 | |
17505ce2 | 623 | // Set up the demodulator for tag -> reader responses. |
17cba269 | 624 | Demod.output = tagToReaderResponse; |
17505ce2 | 625 | Demod.len = 0; |
626 | Demod.state = DEMOD_UNSYNCD; | |
cee5a30d | 627 | |
17505ce2 | 628 | // Setup for the DMA. |
629 | FpgaSetupSsc(FPGA_MAJOR_MODE_HF_ISO14443A); | |
630 | upTo = dmaBuf; | |
631 | lastRxCounter = DMA_BUFFER_SIZE; | |
632 | FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE); | |
cee5a30d | 633 | |
17505ce2 | 634 | // And the reader -> tag commands |
635 | memset(&Uart, 0, sizeof(Uart)); | |
17cba269 | 636 | Uart.output = readerToTagCmd; |
17505ce2 | 637 | Uart.byteCntMax = 32; // was 100 (greg)//////////////////////////////////////////////////////////////////////// |
638 | Uart.state = STATE_UNSYNCD; | |
cee5a30d | 639 | |
17505ce2 | 640 | // And put the FPGA in the appropriate mode |
641 | // Signal field is off with the appropriate LED | |
642 | LED_D_OFF(); | |
643 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_SNIFFER); | |
644 | SetAdcMuxFor(GPIO_MUXSEL_HIPKD); | |
cee5a30d | 645 | |
81012e67 | 646 | uint32_t time_0 = GetCountSspClk(); |
55eaed8f MHS |
647 | uint32_t time_start = 0; |
648 | uint32_t time_stop = 0; | |
81012e67 | 649 | |
17505ce2 | 650 | int div = 0; |
651 | //int div2 = 0; | |
652 | int decbyte = 0; | |
653 | int decbyter = 0; | |
cee5a30d | 654 | |
17505ce2 | 655 | // And now we loop, receiving samples. |
656 | for (;;) { | |
657 | LED_A_ON(); | |
658 | WDT_HIT(); | |
659 | int behindBy = (lastRxCounter - AT91C_BASE_PDC_SSC->PDC_RCR) & (DMA_BUFFER_SIZE-1); | |
660 | if (behindBy > maxBehindBy) { | |
661 | maxBehindBy = behindBy; | |
662 | if (behindBy > (9 * DMA_BUFFER_SIZE / 10)) { | |
663 | Dbprintf("blew circular buffer! behindBy=0x%x", behindBy); | |
664 | goto done; | |
665 | } | |
cee5a30d | 666 | } |
17505ce2 | 667 | if (behindBy < 1) continue; |
cee5a30d | 668 | |
17505ce2 | 669 | LED_A_OFF(); |
670 | smpl = upTo[0]; | |
671 | upTo++; | |
672 | lastRxCounter -= 1; | |
673 | if (upTo - dmaBuf > DMA_BUFFER_SIZE) { | |
674 | upTo -= DMA_BUFFER_SIZE; | |
675 | lastRxCounter += DMA_BUFFER_SIZE; | |
676 | AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) upTo; | |
677 | AT91C_BASE_PDC_SSC->PDC_RNCR = DMA_BUFFER_SIZE; | |
678 | } | |
679 | ||
680 | //samples += 4; | |
681 | samples += 1; | |
682 | ||
683 | if (smpl & 0xF) { | |
684 | decbyte ^= (1 << (3 - div)); | |
685 | } | |
686 | ||
687 | // FOR READER SIDE COMMUMICATION... | |
688 | ||
689 | decbyter <<= 2; | |
690 | decbyter ^= (smpl & 0x30); | |
691 | ||
692 | div++; | |
693 | ||
694 | if ((div + 1) % 2 == 0) { | |
695 | smpl = decbyter; | |
696 | if (OutOfNDecoding((smpl & 0xF0) >> 4)) { | |
697 | rsamples = samples - Uart.samples; | |
698 | time_stop = (GetCountSspClk()-time_0) << 4; | |
17505ce2 | 699 | |
700 | //if (!LogTrace(Uart.output, Uart.byteCnt, rsamples, Uart.parityBits,true)) break; | |
701 | //if (!LogTrace(NULL, 0, Uart.endTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER, 0, true)) break; | |
702 | uint8_t parity[MAX_PARITY_SIZE]; | |
703 | GetParity(Uart.output, Uart.byteCnt, parity); | |
c41dd5f9 | 704 | LogTrace_ISO15693(Uart.output, Uart.byteCnt, time_start*32, time_stop*32, parity, true); |
17505ce2 | 705 | |
706 | /* And ready to receive another command. */ | |
707 | Uart.state = STATE_UNSYNCD; | |
708 | /* And also reset the demod code, which might have been */ | |
709 | /* false-triggered by the commands from the reader. */ | |
710 | Demod.state = DEMOD_UNSYNCD; | |
17505ce2 | 711 | Uart.byteCnt = 0; |
712 | } else { | |
713 | time_start = (GetCountSspClk()-time_0) << 4; | |
714 | } | |
715 | decbyter = 0; | |
716 | } | |
717 | ||
718 | if (div > 3) { | |
719 | smpl = decbyte; | |
720 | if (ManchesterDecoding(smpl & 0x0F)) { | |
721 | time_stop = (GetCountSspClk()-time_0) << 4; | |
722 | ||
723 | rsamples = samples - Demod.samples; | |
17505ce2 | 724 | |
725 | uint8_t parity[MAX_PARITY_SIZE]; | |
726 | GetParity(Demod.output, Demod.len, parity); | |
c41dd5f9 | 727 | LogTrace_ISO15693(Demod.output, Demod.len, time_start*32, time_stop*32, parity, false); |
17505ce2 | 728 | |
729 | // And ready to receive another response. | |
730 | memset(&Demod, 0, sizeof(Demod)); | |
731 | Demod.output = tagToReaderResponse; | |
732 | Demod.state = DEMOD_UNSYNCD; | |
17505ce2 | 733 | } else { |
734 | time_start = (GetCountSspClk()-time_0) << 4; | |
735 | } | |
736 | ||
737 | div = 0; | |
738 | decbyte = 0x00; | |
cee5a30d | 739 | } |
cee5a30d | 740 | |
17505ce2 | 741 | if (BUTTON_PRESS()) { |
742 | DbpString("cancelled_a"); | |
743 | goto done; | |
744 | } | |
745 | } | |
cee5a30d | 746 | |
17505ce2 | 747 | DbpString("COMMAND FINISHED"); |
cee5a30d | 748 | |
17505ce2 | 749 | Dbprintf("%x %x %x", maxBehindBy, Uart.state, Uart.byteCnt); |
3000dc4e | 750 | Dbprintf("%x %x %x", Uart.byteCntMax, BigBuf_get_traceLen(), (int)Uart.output[0]); |
cee5a30d | 751 | |
752 | done: | |
17505ce2 | 753 | AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS; |
754 | Dbprintf("%x %x %x", maxBehindBy, Uart.state, Uart.byteCnt); | |
3000dc4e | 755 | Dbprintf("%x %x %x", Uart.byteCntMax, BigBuf_get_traceLen(), (int)Uart.output[0]); |
17505ce2 | 756 | LEDsoff(); |
1e262141 | 757 | } |
758 | ||
912a3e94 | 759 | void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN) { |
17505ce2 | 760 | int i; |
761 | for (i = 0; i < 8; i++) { | |
912a3e94 | 762 | rotatedCSN[i] = (originalCSN[i] >> 3) | (originalCSN[(i+1)%8] << 5); |
1e262141 | 763 | } |
764 | } | |
765 | ||
3d2c9c9b | 766 | // Encode SOF only |
17505ce2 | 767 | static void CodeIClassTagSOF() { |
81012e67 | 768 | ToSendReset(); |
645c960f | 769 | ToSend[++ToSendMax] = 0x1D; |
1e262141 | 770 | ToSendMax++; |
771 | } | |
1e262141 | 772 | |
17505ce2 | 773 | static void AppendCrc(uint8_t *data, int len) { |
774 | ComputeCrc14443(CRC_ICLASS, data, len, data+len, data+len+1); | |
775 | } | |
81cd0474 | 776 | |
b67f7ec3 | 777 | |
ff7bb4ef MHS |
778 | /** |
779 | * @brief Does the actual simulation | |
ff7bb4ef | 780 | */ |
17505ce2 | 781 | int doIClassSimulation(int simulationMode, uint8_t *reader_mac_buf) { |
0ab9002f | 782 | |
b67f7ec3 MHS |
783 | // free eventually allocated BigBuf memory |
784 | BigBuf_free_keep_EM(); | |
55eaed8f | 785 | |
ae60ceca | 786 | uint16_t page_size = 32 * 8; |
787 | uint8_t current_page = 0; | |
0ab9002f | 788 | |
ae60ceca | 789 | // maintain cipher states for both credit and debit key for each page |
790 | State cipher_state_KC[8]; | |
791 | State cipher_state_KD[8]; | |
792 | State *cipher_state = &cipher_state_KD[0]; | |
8efd0b80 | 793 | |
0ab9002f | 794 | uint8_t *emulator = BigBuf_get_EM_addr(); |
795 | uint8_t *csn = emulator; | |
0ab9002f | 796 | |
1e262141 | 797 | // CSN followed by two CRC bytes |
ae60ceca | 798 | uint8_t anticoll_data[10]; |
799 | uint8_t csn_data[10]; | |
17505ce2 | 800 | memcpy(csn_data, csn, sizeof(csn_data)); |
801 | Dbprintf("Simulating CSN %02x%02x%02x%02x%02x%02x%02x%02x", csn[0], csn[1], csn[2], csn[3], csn[4], csn[5], csn[6], csn[7]); | |
1e262141 | 802 | |
1e262141 | 803 | // Construct anticollision-CSN |
17505ce2 | 804 | rotateCSN(csn_data, anticoll_data); |
1e262141 | 805 | |
806 | // Compute CRC on both CSNs | |
0ab9002f | 807 | AppendCrc(anticoll_data, 8); |
808 | AppendCrc(csn_data, 8); | |
b67f7ec3 | 809 | |
8efd0b80 | 810 | uint8_t diversified_key_d[8] = { 0x00 }; |
811 | uint8_t diversified_key_c[8] = { 0x00 }; | |
ae60ceca | 812 | uint8_t *diversified_key = diversified_key_d; |
8efd0b80 | 813 | |
ae60ceca | 814 | // configuration block |
815 | uint8_t conf_block[10] = {0x12, 0xFF, 0xFF, 0xFF, 0x7F, 0x1F, 0xFF, 0x3C, 0x00, 0x00}; | |
ae60ceca | 816 | |
b67f7ec3 | 817 | // e-Purse |
0ab9002f | 818 | uint8_t card_challenge_data[8] = { 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
ae60ceca | 819 | |
0ab9002f | 820 | if (simulationMode == ICLASS_SIM_MODE_FULL) { |
ae60ceca | 821 | // initialize from page 0 |
822 | memcpy(conf_block, emulator + 8 * 1, 8); | |
823 | memcpy(card_challenge_data, emulator + 8 * 2, 8); // e-purse | |
824 | memcpy(diversified_key_d, emulator + 8 * 3, 8); // Kd | |
825 | memcpy(diversified_key_c, emulator + 8 * 4, 8); // Kc | |
b67f7ec3 | 826 | } |
ae60ceca | 827 | |
8efd0b80 | 828 | AppendCrc(conf_block, 8); |
829 | ||
0ab9002f | 830 | // save card challenge for sim2,4 attack |
831 | if (reader_mac_buf != NULL) { | |
832 | memcpy(reader_mac_buf, card_challenge_data, 8); | |
833 | } | |
1e262141 | 834 | |
ae60ceca | 835 | if (conf_block[5] & 0x80) { |
836 | page_size = 256 * 8; | |
837 | } | |
838 | ||
839 | // From PicoPass DS: | |
840 | // When the page is in personalization mode this bit is equal to 1. | |
841 | // Once the application issuer has personalized and coded its dedicated areas, this bit must be set to 0: | |
842 | // the page is then "in application mode". | |
843 | bool personalization_mode = conf_block[7] & 0x80; | |
844 | ||
845 | // chip memory may be divided in 8 pages | |
846 | uint8_t max_page = conf_block[4] & 0x10 ? 0 : 7; | |
8efd0b80 | 847 | |
ae60ceca | 848 | // Precalculate the cipher states, feeding it the CC |
849 | cipher_state_KD[0] = opt_doTagMAC_1(card_challenge_data, diversified_key_d); | |
850 | cipher_state_KC[0] = opt_doTagMAC_1(card_challenge_data, diversified_key_c); | |
851 | if (simulationMode == ICLASS_SIM_MODE_FULL) { | |
852 | for (int i = 1; i < max_page; i++) { | |
853 | uint8_t *epurse = emulator + i*page_size + 8*2; | |
854 | uint8_t *Kd = emulator + i*page_size + 8*3; | |
855 | uint8_t *Kc = emulator + i*page_size + 8*4; | |
856 | cipher_state_KD[i] = opt_doTagMAC_1(epurse, Kd); | |
857 | cipher_state_KC[i] = opt_doTagMAC_1(epurse, Kc); | |
858 | } | |
859 | } | |
8efd0b80 | 860 | |
ff7bb4ef | 861 | int exitLoop = 0; |
1e262141 | 862 | // Reader 0a |
863 | // Tag 0f | |
864 | // Reader 0c | |
865 | // Tag anticoll. CSN | |
866 | // Reader 81 anticoll. CSN | |
867 | // Tag CSN | |
868 | ||
55eaed8f | 869 | uint8_t *modulated_response; |
b19caaef | 870 | int modulated_response_size = 0; |
17505ce2 | 871 | uint8_t *trace_data = NULL; |
55eaed8f | 872 | int trace_data_size = 0; |
1e262141 | 873 | |
645c960f | 874 | // Respond SOF -- takes 1 bytes |
ae60ceca | 875 | uint8_t *resp_sof = BigBuf_malloc(1); |
b67f7ec3 | 876 | int resp_sof_Len; |
1e262141 | 877 | |
878 | // Anticollision CSN (rotated CSN) | |
645c960f | 879 | // 22: Takes 2 bytes for SOF/EOF and 10 * 2 = 20 bytes (2 bytes/byte) |
0ab9002f | 880 | uint8_t *resp_anticoll = BigBuf_malloc(22); |
b67f7ec3 | 881 | int resp_anticoll_len; |
1e262141 | 882 | |
0ab9002f | 883 | // CSN (block 0) |
645c960f | 884 | // 22: Takes 2 bytes for SOF/EOF and 10 * 2 = 20 bytes (2 bytes/byte) |
0ab9002f | 885 | uint8_t *resp_csn = BigBuf_malloc(22); |
b67f7ec3 | 886 | int resp_csn_len; |
1e262141 | 887 | |
0ab9002f | 888 | // configuration (block 1) picopass 2ks |
889 | uint8_t *resp_conf = BigBuf_malloc(22); | |
890 | int resp_conf_len; | |
0ab9002f | 891 | |
892 | // e-Purse (block 2) | |
b3cc5f29 | 893 | // 18: Takes 2 bytes for SOF/EOF and 8 * 2 = 16 bytes (2 bytes/bit) |
0ab9002f | 894 | uint8_t *resp_cc = BigBuf_malloc(18); |
b67f7ec3 | 895 | int resp_cc_len; |
1e262141 | 896 | |
a66f26da | 897 | // Kd, Kc (blocks 3 and 4). Cannot be read. Always respond with 0xff bytes only |
898 | uint8_t *resp_ff = BigBuf_malloc(22); | |
899 | int resp_ff_len; | |
900 | uint8_t ff_data[10] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00}; | |
901 | AppendCrc(ff_data, 8); | |
902 | ||
0ab9002f | 903 | // Application Issuer Area (block 5) |
904 | uint8_t *resp_aia = BigBuf_malloc(22); | |
905 | int resp_aia_len; | |
906 | uint8_t aia_data[10] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00}; | |
907 | AppendCrc(aia_data, 8); | |
908 | ||
f71f4deb | 909 | uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE); |
1e262141 | 910 | int len; |
911 | ||
1e262141 | 912 | // Prepare card messages |
1e262141 | 913 | |
3d2c9c9b | 914 | // First card answer: SOF only |
1e262141 | 915 | CodeIClassTagSOF(); |
17505ce2 | 916 | memcpy(resp_sof, ToSend, ToSendMax); |
917 | resp_sof_Len = ToSendMax; | |
1e262141 | 918 | |
919 | // Anticollision CSN | |
3d2c9c9b | 920 | CodeIso15693AsTag(anticoll_data, sizeof(anticoll_data)); |
17505ce2 | 921 | memcpy(resp_anticoll, ToSend, ToSendMax); |
922 | resp_anticoll_len = ToSendMax; | |
1e262141 | 923 | |
0ab9002f | 924 | // CSN (block 0) |
3d2c9c9b | 925 | CodeIso15693AsTag(csn_data, sizeof(csn_data)); |
17505ce2 | 926 | memcpy(resp_csn, ToSend, ToSendMax); |
927 | resp_csn_len = ToSendMax; | |
1e262141 | 928 | |
0ab9002f | 929 | // Configuration (block 1) |
ae60ceca | 930 | CodeIso15693AsTag(conf_block, sizeof(conf_block)); |
0ab9002f | 931 | memcpy(resp_conf, ToSend, ToSendMax); |
932 | resp_conf_len = ToSendMax; | |
933 | ||
934 | // e-Purse (block 2) | |
3d2c9c9b | 935 | CodeIso15693AsTag(card_challenge_data, sizeof(card_challenge_data)); |
0ab9002f | 936 | memcpy(resp_cc, ToSend, ToSendMax); |
937 | resp_cc_len = ToSendMax; | |
938 | ||
a66f26da | 939 | // Kd, Kc (blocks 3 and 4) |
940 | CodeIso15693AsTag(ff_data, sizeof(ff_data)); | |
941 | memcpy(resp_ff, ToSend, ToSendMax); | |
942 | resp_ff_len = ToSendMax; | |
943 | ||
0ab9002f | 944 | // Application Issuer Area (block 5) |
3d2c9c9b | 945 | CodeIso15693AsTag(aia_data, sizeof(aia_data)); |
0ab9002f | 946 | memcpy(resp_aia, ToSend, ToSendMax); |
947 | resp_aia_len = ToSendMax; | |
1e262141 | 948 | |
b19caaef | 949 | //This is used for responding to READ-block commands or other data which is dynamically generated |
a66f26da | 950 | uint8_t *data_generic_trace = BigBuf_malloc(32 + 2); // 32 bytes data + 2byte CRC is max tag answer |
951 | uint8_t *data_response = BigBuf_malloc( (32 + 2) * 2 + 2); | |
e3dc1e4c | 952 | |
f83cc126 | 953 | bool buttonPressed = false; |
5b12974a | 954 | enum { IDLE, ACTIVATED, SELECTED, HALTED } chip_state = IDLE; |
955 | ||
17505ce2 | 956 | while (!exitLoop) { |
0ab9002f | 957 | WDT_HIT(); |
3fe4ff4f | 958 | |
3d2c9c9b | 959 | uint32_t reader_eof_time = 0; |
960 | len = GetIso15693CommandFromReader(receivedCmd, MAX_FRAME_SIZE, &reader_eof_time); | |
961 | if (len < 0) { | |
f83cc126 | 962 | buttonPressed = true; |
1e262141 | 963 | break; |
81cd0474 | 964 | } |
a66f26da | 965 | |
0ab9002f | 966 | // Now look at the reader command and provide appropriate responses |
967 | // default is no response: | |
968 | modulated_response = NULL; | |
969 | modulated_response_size = 0; | |
970 | trace_data = NULL; | |
971 | trace_data_size = 0; | |
a66f26da | 972 | |
5b12974a | 973 | if (receivedCmd[0] == ICLASS_CMD_ACTALL && len == 1) { |
974 | // Reader in anticollision phase | |
975 | if (chip_state != HALTED) { | |
976 | modulated_response = resp_sof; | |
977 | modulated_response_size = resp_sof_Len; | |
5b12974a | 978 | chip_state = ACTIVATED; |
979 | } | |
0ab9002f | 980 | |
981 | } else if (receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 1) { // identify | |
5b12974a | 982 | // Reader asks for anticollision CSN |
983 | if (chip_state == SELECTED || chip_state == ACTIVATED) { | |
984 | modulated_response = resp_anticoll; | |
985 | modulated_response_size = resp_anticoll_len; | |
986 | trace_data = anticoll_data; | |
987 | trace_data_size = sizeof(anticoll_data); | |
988 | } | |
989 | ||
990 | } else if (receivedCmd[0] == ICLASS_CMD_SELECT && len == 9) { | |
991 | // Reader selects anticollision CSN. | |
992 | // Tag sends the corresponding real CSN | |
993 | if (chip_state == ACTIVATED || chip_state == SELECTED) { | |
994 | if (!memcmp(receivedCmd+1, anticoll_data, 8)) { | |
995 | modulated_response = resp_csn; | |
996 | modulated_response_size = resp_csn_len; | |
997 | trace_data = csn_data; | |
998 | trace_data_size = sizeof(csn_data); | |
999 | chip_state = SELECTED; | |
1000 | } else { | |
1001 | chip_state = IDLE; | |
1002 | } | |
1003 | } else if (chip_state == HALTED) { | |
1004 | // RESELECT with CSN | |
1005 | if (!memcmp(receivedCmd+1, csn_data, 8)) { | |
1006 | modulated_response = resp_csn; | |
1007 | modulated_response_size = resp_csn_len; | |
1008 | trace_data = csn_data; | |
1009 | trace_data_size = sizeof(csn_data); | |
1010 | chip_state = SELECTED; | |
1011 | } | |
1012 | } | |
a66f26da | 1013 | |
0ab9002f | 1014 | } else if (receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 4) { // read block |
1015 | uint16_t blockNo = receivedCmd[1]; | |
5b12974a | 1016 | if (chip_state == SELECTED) { |
1017 | if (simulationMode == ICLASS_SIM_MODE_EXIT_AFTER_MAC) { | |
1018 | // provide defaults for blocks 0 ... 5 | |
1019 | switch (blockNo) { | |
1020 | case 0: // csn (block 00) | |
1021 | modulated_response = resp_csn; | |
1022 | modulated_response_size = resp_csn_len; | |
1023 | trace_data = csn_data; | |
1024 | trace_data_size = sizeof(csn_data); | |
1025 | break; | |
1026 | case 1: // configuration (block 01) | |
1027 | modulated_response = resp_conf; | |
1028 | modulated_response_size = resp_conf_len; | |
ae60ceca | 1029 | trace_data = conf_block; |
1030 | trace_data_size = sizeof(conf_block); | |
5b12974a | 1031 | break; |
1032 | case 2: // e-purse (block 02) | |
1033 | modulated_response = resp_cc; | |
1034 | modulated_response_size = resp_cc_len; | |
1035 | trace_data = card_challenge_data; | |
1036 | trace_data_size = sizeof(card_challenge_data); | |
1037 | // set epurse of sim2,4 attack | |
1038 | if (reader_mac_buf != NULL) { | |
1039 | memcpy(reader_mac_buf, card_challenge_data, 8); | |
1040 | } | |
1041 | break; | |
1042 | case 3: | |
1043 | case 4: // Kd, Kc, always respond with 0xff bytes | |
1044 | modulated_response = resp_ff; | |
1045 | modulated_response_size = resp_ff_len; | |
1046 | trace_data = ff_data; | |
1047 | trace_data_size = sizeof(ff_data); | |
1048 | break; | |
1049 | case 5: // Application Issuer Area (block 05) | |
1050 | modulated_response = resp_aia; | |
1051 | modulated_response_size = resp_aia_len; | |
1052 | trace_data = aia_data; | |
1053 | trace_data_size = sizeof(aia_data); | |
1054 | break; | |
1055 | // default: don't respond | |
1056 | } | |
1057 | } else if (simulationMode == ICLASS_SIM_MODE_FULL) { | |
1058 | if (blockNo == 3 || blockNo == 4) { // Kd, Kc, always respond with 0xff bytes | |
a66f26da | 1059 | modulated_response = resp_ff; |
1060 | modulated_response_size = resp_ff_len; | |
1061 | trace_data = ff_data; | |
1062 | trace_data_size = sizeof(ff_data); | |
5b12974a | 1063 | } else { // use data from emulator memory |
ae60ceca | 1064 | memcpy(data_generic_trace, emulator + current_page*page_size + 8*blockNo, 8); |
5b12974a | 1065 | AppendCrc(data_generic_trace, 8); |
1066 | trace_data = data_generic_trace; | |
1067 | trace_data_size = 10; | |
1068 | CodeIso15693AsTag(trace_data, trace_data_size); | |
1069 | memcpy(data_response, ToSend, ToSendMax); | |
1070 | modulated_response = data_response; | |
1071 | modulated_response_size = ToSendMax; | |
1072 | } | |
0ab9002f | 1073 | } |
5b12974a | 1074 | } |
1075 | ||
1076 | } else if ((receivedCmd[0] == ICLASS_CMD_READCHECK_KD | |
8ddb81a2 | 1077 | || receivedCmd[0] == ICLASS_CMD_READCHECK_KC) && receivedCmd[1] == 0x02 && len == 2) { |
5b12974a | 1078 | // Read e-purse (88 02 || 18 02) |
1079 | if (chip_state == SELECTED) { | |
ae60ceca | 1080 | if(receivedCmd[0] == ICLASS_CMD_READCHECK_KD){ |
1081 | cipher_state = &cipher_state_KD[current_page]; | |
1082 | diversified_key = diversified_key_d; | |
1083 | } else { | |
8efd0b80 | 1084 | cipher_state = &cipher_state_KC[current_page]; |
ae60ceca | 1085 | diversified_key = diversified_key_c; |
1086 | } | |
5b12974a | 1087 | modulated_response = resp_cc; |
1088 | modulated_response_size = resp_cc_len; | |
1089 | trace_data = card_challenge_data; | |
1090 | trace_data_size = sizeof(card_challenge_data); | |
5b12974a | 1091 | } |
1092 | ||
8efd0b80 | 1093 | } else if ((receivedCmd[0] == ICLASS_CMD_CHECK_KC |
8ddb81a2 | 1094 | || receivedCmd[0] == ICLASS_CMD_CHECK_KD) && len == 9) { |
5b12974a | 1095 | // Reader random and reader MAC!!! |
1096 | if (chip_state == SELECTED) { | |
1097 | if (simulationMode == ICLASS_SIM_MODE_FULL) { | |
1098 | //NR, from reader, is in receivedCmd+1 | |
ae60ceca | 1099 | opt_doTagMAC_2(*cipher_state, receivedCmd+1, data_generic_trace, diversified_key); |
a66f26da | 1100 | trace_data = data_generic_trace; |
5b12974a | 1101 | trace_data_size = 4; |
a66f26da | 1102 | CodeIso15693AsTag(trace_data, trace_data_size); |
1103 | memcpy(data_response, ToSend, ToSendMax); | |
1104 | modulated_response = data_response; | |
1105 | modulated_response_size = ToSendMax; | |
5b12974a | 1106 | //exitLoop = true; |
1107 | } else { // Not fullsim, we don't respond | |
1108 | // We do not know what to answer, so lets keep quiet | |
1109 | if (simulationMode == ICLASS_SIM_MODE_EXIT_AFTER_MAC) { | |
1110 | if (reader_mac_buf != NULL) { | |
1111 | // save NR and MAC for sim 2,4 | |
1112 | memcpy(reader_mac_buf + 8, receivedCmd + 1, 8); | |
1113 | } | |
1114 | exitLoop = true; | |
1115 | } | |
a66f26da | 1116 | } |
0ab9002f | 1117 | } |
1118 | ||
5b12974a | 1119 | } else if (receivedCmd[0] == ICLASS_CMD_HALT && len == 1) { |
1120 | if (chip_state == SELECTED) { | |
1121 | // Reader ends the session | |
ae60ceca | 1122 | modulated_response = resp_sof; |
1123 | modulated_response_size = resp_sof_Len; | |
5b12974a | 1124 | chip_state = HALTED; |
1125 | } | |
0ab9002f | 1126 | |
5b12974a | 1127 | } else if (simulationMode == ICLASS_SIM_MODE_FULL && receivedCmd[0] == ICLASS_CMD_READ4 && len == 4) { // 0x06 |
1128 | //Read 4 blocks | |
1129 | if (chip_state == SELECTED) { | |
ae60ceca | 1130 | uint8_t blockNo = receivedCmd[1]; |
1131 | memcpy(data_generic_trace, emulator + current_page*page_size + blockNo*8, 8 * 4); | |
5b12974a | 1132 | AppendCrc(data_generic_trace, 8 * 4); |
b19caaef | 1133 | trace_data = data_generic_trace; |
5b12974a | 1134 | trace_data_size = 8 * 4 + 2; |
3d2c9c9b | 1135 | CodeIso15693AsTag(trace_data, trace_data_size); |
b67f7ec3 MHS |
1136 | memcpy(data_response, ToSend, ToSendMax); |
1137 | modulated_response = data_response; | |
1138 | modulated_response_size = ToSendMax; | |
ff7bb4ef | 1139 | } |
b67f7ec3 | 1140 | |
5b12974a | 1141 | } else if (receivedCmd[0] == ICLASS_CMD_UPDATE && (len == 12 || len == 14)) { |
0ab9002f | 1142 | // We're expected to respond with the data+crc, exactly what's already in the receivedCmd |
1143 | // receivedCmd is now UPDATE 1b | ADDRESS 1b | DATA 8b | Signature 4b or CRC 2b | |
5b12974a | 1144 | if (chip_state == SELECTED) { |
8ddb81a2 | 1145 | uint8_t blockNo = receivedCmd[1]; |
1146 | if (blockNo == 2) { // update e-purse | |
1147 | memcpy(card_challenge_data, receivedCmd+2, 8); | |
1148 | CodeIso15693AsTag(card_challenge_data, sizeof(card_challenge_data)); | |
1149 | memcpy(resp_cc, ToSend, ToSendMax); | |
1150 | resp_cc_len = ToSendMax; | |
ae60ceca | 1151 | cipher_state_KD[current_page] = opt_doTagMAC_1(card_challenge_data, diversified_key_d); |
1152 | cipher_state_KC[current_page] = opt_doTagMAC_1(card_challenge_data, diversified_key_c); | |
8ddb81a2 | 1153 | if (simulationMode == ICLASS_SIM_MODE_FULL) { |
ae60ceca | 1154 | memcpy(emulator + current_page*page_size + 8*2, card_challenge_data, 8); |
8ddb81a2 | 1155 | } |
1156 | } else if (blockNo == 3) { // update Kd | |
ae60ceca | 1157 | for (int i = 0; i < 8; i++) { |
1158 | if (personalization_mode) { | |
8efd0b80 | 1159 | diversified_key_d[i] = receivedCmd[2 + i]; |
ae60ceca | 1160 | } else { |
1161 | diversified_key_d[i] ^= receivedCmd[2 + i]; | |
8efd0b80 | 1162 | } |
8ddb81a2 | 1163 | } |
8efd0b80 | 1164 | cipher_state_KD[current_page] = opt_doTagMAC_1(card_challenge_data, diversified_key_d); |
8ddb81a2 | 1165 | if (simulationMode == ICLASS_SIM_MODE_FULL) { |
ae60ceca | 1166 | memcpy(emulator + current_page*page_size + 8*3, diversified_key_d, 8); |
8ddb81a2 | 1167 | } |
8efd0b80 | 1168 | } else if (blockNo == 4) { // update Kc |
ae60ceca | 1169 | for (int i = 0; i < 8; i++) { |
1170 | if (personalization_mode) { | |
8efd0b80 | 1171 | diversified_key_c[i] = receivedCmd[2 + i]; |
ae60ceca | 1172 | } else { |
1173 | diversified_key_c[i] ^= receivedCmd[2 + i]; | |
8efd0b80 | 1174 | } |
8ddb81a2 | 1175 | } |
ae60ceca | 1176 | cipher_state_KC[current_page] = opt_doTagMAC_1(card_challenge_data, diversified_key_c); |
8ddb81a2 | 1177 | if (simulationMode == ICLASS_SIM_MODE_FULL) { |
ae60ceca | 1178 | memcpy(emulator + current_page*page_size + 8*4, diversified_key_c, 8); |
8ddb81a2 | 1179 | } |
1180 | } else if (simulationMode == ICLASS_SIM_MODE_FULL) { // update any other data block | |
ae60ceca | 1181 | memcpy(emulator + current_page*page_size + 8*blockNo, receivedCmd+2, 8); |
8efd0b80 | 1182 | } |
5b12974a | 1183 | memcpy(data_generic_trace, receivedCmd + 2, 8); |
1184 | AppendCrc(data_generic_trace, 8); | |
1185 | trace_data = data_generic_trace; | |
1186 | trace_data_size = 10; | |
1187 | CodeIso15693AsTag(trace_data, trace_data_size); | |
1188 | memcpy(data_response, ToSend, ToSendMax); | |
1189 | modulated_response = data_response; | |
1190 | modulated_response_size = ToSendMax; | |
1191 | } | |
1192 | ||
1193 | } else if (receivedCmd[0] == ICLASS_CMD_PAGESEL && len == 4) { | |
0ab9002f | 1194 | // Pagesel |
ae60ceca | 1195 | // Chips with a single page will not answer to this command |
8efd0b80 | 1196 | // Otherwise, we should answer 8bytes (conf block 1) + 2bytes CRC |
5b12974a | 1197 | if (chip_state == SELECTED) { |
ae60ceca | 1198 | if (simulationMode == ICLASS_SIM_MODE_FULL && max_page > 0) { |
1199 | current_page = receivedCmd[1]; | |
1200 | memcpy(data_generic_trace, emulator + current_page*page_size + 8*1, 8); | |
1201 | memcpy(diversified_key_d, emulator + current_page*page_size + 8*3, 8); | |
8efd0b80 | 1202 | memcpy(diversified_key_c, emulator + current_page*page_size + 8*4, 8); |
ae60ceca | 1203 | cipher_state = &cipher_state_KD[current_page]; |
1204 | personalization_mode = data_generic_trace[7] & 0x80; | |
1205 | AppendCrc(data_generic_trace, 8); | |
1206 | trace_data = data_generic_trace; | |
1207 | trace_data_size = 10; | |
1208 | CodeIso15693AsTag(trace_data, trace_data_size); | |
8efd0b80 | 1209 | memcpy(data_response, ToSend, ToSendMax); |
ae60ceca | 1210 | modulated_response = data_response; |
1211 | modulated_response_size = ToSendMax; | |
1212 | } | |
5b12974a | 1213 | } |
0ab9002f | 1214 | |
e49d31c0 | 1215 | } else if (receivedCmd[0] == 0x26 && len == 5) { |
1216 | // standard ISO15693 INVENTORY command. Ignore. | |
1217 | ||
17505ce2 | 1218 | } else { |
5b12974a | 1219 | // don't know how to handle this command |
3d2c9c9b | 1220 | char debug_message[250]; // should be enough |
1221 | sprintf(debug_message, "Unhandled command (len = %d) received from reader:", len); | |
1222 | for (int i = 0; i < len && strlen(debug_message) < sizeof(debug_message) - 3 - 1; i++) { | |
1223 | sprintf(debug_message + strlen(debug_message), " %02x", receivedCmd[i]); | |
1224 | } | |
1225 | Dbprintf("%s", debug_message); | |
1e262141 | 1226 | // Do not respond |
1e262141 | 1227 | } |
1228 | ||
55eaed8f | 1229 | /** |
8efd0b80 | 1230 | A legit tag has about 273,4us delay between reader EOT and tag SOF. |
55eaed8f | 1231 | **/ |
17505ce2 | 1232 | if (modulated_response_size > 0) { |
c41dd5f9 | 1233 | uint32_t response_time = reader_eof_time + DELAY_ICLASS_VCD_TO_VICC_SIM; |
8efd0b80 | 1234 | TransmitTo15693Reader(modulated_response, modulated_response_size, &response_time, 0, false); |
c41dd5f9 | 1235 | LogTrace_ISO15693(trace_data, trace_data_size, response_time*32, response_time*32 + modulated_response_size/2, NULL, false); |
81cd0474 | 1236 | } |
f83cc126 | 1237 | |
81cd0474 | 1238 | } |
1e262141 | 1239 | |
17505ce2 | 1240 | if (buttonPressed) |
f83cc126 MHS |
1241 | { |
1242 | DbpString("Button pressed"); | |
1243 | } | |
f83cc126 | 1244 | return buttonPressed; |
1e262141 | 1245 | } |
1246 | ||
17505ce2 | 1247 | /** |
1248 | * @brief SimulateIClass simulates an iClass card. | |
1249 | * @param arg0 type of simulation | |
1250 | * - 0 uses the first 8 bytes in usb data as CSN | |
1251 | * - 2 "dismantling iclass"-attack. This mode iterates through all CSN's specified | |
1252 | * in the usb data. This mode collects MAC from the reader, in order to do an offline | |
1253 | * attack on the keys. For more info, see "dismantling iclass" and proxclone.com. | |
1254 | * - Other : Uses the default CSN (031fec8af7ff12e0) | |
1255 | * @param arg1 - number of CSN's contained in datain (applicable for mode 2 only) | |
1256 | * @param arg2 | |
1257 | * @param datain | |
1258 | */ | |
1259 | void SimulateIClass(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain) { | |
8efd0b80 | 1260 | |
ae60ceca | 1261 | LED_A_ON(); |
8efd0b80 | 1262 | |
17505ce2 | 1263 | uint32_t simType = arg0; |
1264 | uint32_t numberOfCSNS = arg1; | |
0ab9002f | 1265 | |
3d2c9c9b | 1266 | // setup hardware for simulation: |
17505ce2 | 1267 | FpgaDownloadAndGo(FPGA_BITSTREAM_HF); |
3d2c9c9b | 1268 | SetAdcMuxFor(GPIO_MUXSEL_HIPKD); |
a66f26da | 1269 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_NO_MODULATION); |
ae60ceca | 1270 | LED_D_OFF(); |
3d2c9c9b | 1271 | FpgaSetupSsc(FPGA_MAJOR_MODE_HF_SIMULATOR); |
1272 | StartCountSspClk(); | |
e3dc1e4c | 1273 | |
17505ce2 | 1274 | // Enable and clear the trace |
1275 | set_tracing(true); | |
1276 | clear_trace(); | |
1277 | //Use the emulator memory for SIM | |
1278 | uint8_t *emulator = BigBuf_get_EM_addr(); | |
e3dc1e4c | 1279 | |
0ab9002f | 1280 | if (simType == ICLASS_SIM_MODE_CSN) { |
17505ce2 | 1281 | // Use the CSN from commandline |
1282 | memcpy(emulator, datain, 8); | |
0ab9002f | 1283 | doIClassSimulation(ICLASS_SIM_MODE_CSN, NULL); |
1284 | } else if (simType == ICLASS_SIM_MODE_CSN_DEFAULT) { | |
17505ce2 | 1285 | //Default CSN |
1286 | uint8_t csn_crc[] = { 0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0, 0x00, 0x00 }; | |
1287 | // Use the CSN from commandline | |
1288 | memcpy(emulator, csn_crc, 8); | |
0ab9002f | 1289 | doIClassSimulation(ICLASS_SIM_MODE_CSN, NULL); |
1290 | } else if (simType == ICLASS_SIM_MODE_READER_ATTACK) { | |
17505ce2 | 1291 | uint8_t mac_responses[USB_CMD_DATA_SIZE] = { 0 }; |
1292 | Dbprintf("Going into attack mode, %d CSNS sent", numberOfCSNS); | |
1293 | // In this mode, a number of csns are within datain. We'll simulate each one, one at a time | |
0ab9002f | 1294 | // in order to collect MAC's from the reader. This can later be used in an offline-attack |
17505ce2 | 1295 | // in order to obtain the keys, as in the "dismantling iclass"-paper. |
0ab9002f | 1296 | int i; |
1297 | for (i = 0; i < numberOfCSNS && i*16+16 <= USB_CMD_DATA_SIZE; i++) { | |
1298 | // The usb data is 512 bytes, fitting 32 responses (8 byte CC + 4 Byte NR + 4 Byte MAC = 16 Byte response). | |
17505ce2 | 1299 | memcpy(emulator, datain+(i*8), 8); |
0ab9002f | 1300 | if (doIClassSimulation(ICLASS_SIM_MODE_EXIT_AFTER_MAC, mac_responses+i*16)) { |
1301 | // Button pressed | |
1302 | break; | |
1e262141 | 1303 | } |
3d2c9c9b | 1304 | Dbprintf("CSN: %02x %02x %02x %02x %02x %02x %02x %02x", |
1305 | datain[i*8+0], datain[i*8+1], datain[i*8+2], datain[i*8+3], | |
1306 | datain[i*8+4], datain[i*8+5], datain[i*8+6], datain[i*8+7]); | |
1307 | Dbprintf("NR,MAC: %02x %02x %02x %02x %02x %02x %02x %02x", | |
5b12974a | 1308 | mac_responses[i*16+ 8], mac_responses[i*16+ 9], mac_responses[i*16+10], mac_responses[i*16+11], |
1309 | mac_responses[i*16+12], mac_responses[i*16+13], mac_responses[i*16+14], mac_responses[i*16+15]); | |
1310 | SpinDelay(100); // give the reader some time to prepare for next CSN | |
1e262141 | 1311 | } |
0ab9002f | 1312 | cmd_send(CMD_ACK, CMD_SIMULATE_TAG_ICLASS, i, 0, mac_responses, i*16); |
1313 | } else if (simType == ICLASS_SIM_MODE_FULL) { | |
17505ce2 | 1314 | //This is 'full sim' mode, where we use the emulator storage for data. |
0ab9002f | 1315 | doIClassSimulation(ICLASS_SIM_MODE_FULL, NULL); |
17505ce2 | 1316 | } else { |
1317 | // We may want a mode here where we hardcode the csns to use (from proxclone). | |
1318 | // That will speed things up a little, but not required just yet. | |
1319 | Dbprintf("The mode is not implemented, reserved for future use"); | |
1e262141 | 1320 | } |
ae60ceca | 1321 | |
17505ce2 | 1322 | Dbprintf("Done..."); |
1e262141 | 1323 | |
ae60ceca | 1324 | LED_A_OFF(); |
1e262141 | 1325 | } |
1326 | ||
17505ce2 | 1327 | |
1e262141 | 1328 | /// THE READER CODE |
1329 | ||
c41dd5f9 | 1330 | static void ReaderTransmitIClass(uint8_t *frame, int len, uint32_t *start_time) { |
17505ce2 | 1331 | |
c41dd5f9 | 1332 | CodeIso15693AsReader(frame, len); |
17505ce2 | 1333 | |
c41dd5f9 | 1334 | TransmitTo15693Tag(ToSend, ToSendMax, start_time); |
17505ce2 | 1335 | |
c41dd5f9 | 1336 | uint32_t end_time = *start_time + 32*(8*ToSendMax-4); // substract the 4 padding bits after EOF |
1337 | LogTrace_ISO15693(frame, len, *start_time*4, end_time*4, NULL, true); | |
1e262141 | 1338 | } |
1339 | ||
1340 | ||
ece38ef3 | 1341 | static bool sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* resp, size_t max_resp_size, |
496bb4be | 1342 | uint8_t expected_size, uint8_t retries, uint32_t start_time, uint32_t timeout, uint32_t *eof_time) { |
17505ce2 | 1343 | while (retries-- > 0) { |
c41dd5f9 | 1344 | ReaderTransmitIClass(command, cmdsize, &start_time); |
496bb4be | 1345 | if (expected_size == GetIso15693AnswerFromTag(resp, max_resp_size, timeout, eof_time)) { |
aa53efc3 | 1346 | return true; |
c8dd9b09 MHS |
1347 | } |
1348 | } | |
aa53efc3 | 1349 | return false;//Error |
c8dd9b09 MHS |
1350 | } |
1351 | ||
1352 | /** | |
ece38ef3 | 1353 | * @brief Selects an iclass tag |
1354 | * @param card_data where the CSN is stored for return | |
1355 | * @return false = fail | |
1356 | * true = success | |
c8dd9b09 | 1357 | */ |
ece38ef3 | 1358 | static bool selectIclassTag(uint8_t *card_data, uint32_t *eof_time) { |
c41dd5f9 | 1359 | uint8_t act_all[] = { 0x0a }; |
1360 | uint8_t identify[] = { 0x0c }; | |
1361 | uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
caaf9618 | 1362 | |
f71f4deb | 1363 | uint8_t resp[ICLASS_BUFFER_SIZE]; |
c8dd9b09 | 1364 | |
c41dd5f9 | 1365 | uint32_t start_time = GetCountSspClk(); |
c8dd9b09 MHS |
1366 | |
1367 | // Send act_all | |
c41dd5f9 | 1368 | ReaderTransmitIClass(act_all, 1, &start_time); |
c8dd9b09 | 1369 | // Card present? |
ece38ef3 | 1370 | if (GetIso15693AnswerFromTag(resp, sizeof(resp), ICLASS_READER_TIMEOUT_ACTALL, eof_time) < 0) return false;//Fail |
1371 | ||
c8dd9b09 | 1372 | //Send Identify |
c41dd5f9 | 1373 | start_time = *eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
1374 | ReaderTransmitIClass(identify, 1, &start_time); | |
c8dd9b09 | 1375 | //We expect a 10-byte response here, 8 byte anticollision-CSN and 2 byte CRC |
c41dd5f9 | 1376 | uint8_t len = GetIso15693AnswerFromTag(resp, sizeof(resp), ICLASS_READER_TIMEOUT_OTHERS, eof_time); |
ece38ef3 | 1377 | if (len != 10) return false;//Fail |
c8dd9b09 MHS |
1378 | |
1379 | //Copy the Anti-collision CSN to our select-packet | |
17505ce2 | 1380 | memcpy(&select[1], resp, 8); |
c8dd9b09 | 1381 | //Select the card |
c41dd5f9 | 1382 | start_time = *eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
1383 | ReaderTransmitIClass(select, sizeof(select), &start_time); | |
c8dd9b09 | 1384 | //We expect a 10-byte response here, 8 byte CSN and 2 byte CRC |
c41dd5f9 | 1385 | len = GetIso15693AnswerFromTag(resp, sizeof(resp), ICLASS_READER_TIMEOUT_OTHERS, eof_time); |
ece38ef3 | 1386 | if (len != 10) return false;//Fail |
c8dd9b09 | 1387 | |
ece38ef3 | 1388 | //Success - we got CSN |
c8dd9b09 | 1389 | //Save CSN in response data |
17505ce2 | 1390 | memcpy(card_data, resp, 8); |
c8dd9b09 | 1391 | |
ece38ef3 | 1392 | return true; |
aa53efc3 | 1393 | } |
c8dd9b09 | 1394 | |
caaf9618 | 1395 | |
ece38ef3 | 1396 | // Select an iClass tag and read all blocks which are always readable without authentication |
496bb4be | 1397 | void ReaderIClass(uint8_t flags) { |
1e262141 | 1398 | |
ece38ef3 | 1399 | LED_A_ON(); |
1400 | ||
17505ce2 | 1401 | uint8_t card_data[6 * 8] = {0}; |
83602aff | 1402 | memset(card_data, 0xFF, sizeof(card_data)); |
34e2af02 | 1403 | uint8_t resp[ICLASS_BUFFER_SIZE]; |
caaf9618 | 1404 | //Read conf block CRC(0x01) => 0xfa 0x22 |
ece38ef3 | 1405 | uint8_t readConf[] = {ICLASS_CMD_READ_OR_IDENTIFY, 0x01, 0xfa, 0x22}; |
1406 | //Read e-purse block CRC(0x02) => 0x61 0x10 | |
1407 | uint8_t readEpurse[] = {ICLASS_CMD_READ_OR_IDENTIFY, 0x02, 0x61, 0x10}; | |
34e2af02 | 1408 | //Read App Issuer Area block CRC(0x05) => 0xde 0x64 |
ece38ef3 | 1409 | uint8_t readAA[] = {ICLASS_CMD_READ_OR_IDENTIFY, 0x05, 0xde, 0x64}; |
caaf9618 | 1410 | |
caaf9618 | 1411 | uint8_t result_status = 0; |
34e2af02 | 1412 | |
496bb4be | 1413 | if (flags & FLAG_ICLASS_READER_INIT) { |
1414 | Iso15693InitReader(); | |
1415 | } | |
34e2af02 | 1416 | |
496bb4be | 1417 | if (flags & FLAG_ICLASS_READER_CLEARTRACE) { |
1418 | set_tracing(true); | |
1419 | clear_trace(); | |
1420 | StartCountSspClk(); | |
1421 | } | |
1e262141 | 1422 | |
c41dd5f9 | 1423 | uint32_t start_time = 0; |
1424 | uint32_t eof_time = 0; | |
ece38ef3 | 1425 | |
1426 | if (selectIclassTag(resp, &eof_time)) { | |
1427 | result_status = FLAG_ICLASS_READER_CSN; | |
1428 | memcpy(card_data, resp, 8); | |
1429 | } | |
496bb4be | 1430 | |
ece38ef3 | 1431 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
496bb4be | 1432 | |
ece38ef3 | 1433 | //Read block 1, config |
496bb4be | 1434 | if (flags & FLAG_ICLASS_READER_CONF) { |
1435 | if (sendCmdGetResponseWithRetries(readConf, sizeof(readConf), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) { | |
ece38ef3 | 1436 | result_status |= FLAG_ICLASS_READER_CONF; |
1437 | memcpy(card_data+8, resp, 8); | |
1438 | } else { | |
1439 | Dbprintf("Failed to read config block"); | |
c8dd9b09 | 1440 | } |
c41dd5f9 | 1441 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
ece38ef3 | 1442 | } |
c8dd9b09 | 1443 | |
ece38ef3 | 1444 | //Read block 2, e-purse |
496bb4be | 1445 | if (flags & FLAG_ICLASS_READER_CC) { |
1446 | if (sendCmdGetResponseWithRetries(readEpurse, sizeof(readEpurse), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) { | |
ece38ef3 | 1447 | result_status |= FLAG_ICLASS_READER_CC; |
1448 | memcpy(card_data + (8*2), resp, 8); | |
1449 | } else { | |
1450 | Dbprintf("Failed to read e-purse"); | |
caaf9618 | 1451 | } |
ece38ef3 | 1452 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
1453 | } | |
caaf9618 | 1454 | |
ece38ef3 | 1455 | //Read block 5, AA |
496bb4be | 1456 | if (flags & FLAG_ICLASS_READER_AA) { |
1457 | if (sendCmdGetResponseWithRetries(readAA, sizeof(readAA), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) { | |
ece38ef3 | 1458 | result_status |= FLAG_ICLASS_READER_AA; |
1459 | memcpy(card_data + (8*5), resp, 8); | |
1460 | } else { | |
1461 | Dbprintf("Failed to read AA block"); | |
c8dd9b09 | 1462 | } |
6ce0e538 | 1463 | } |
ece38ef3 | 1464 | |
1465 | cmd_send(CMD_ACK, result_status, 0, 0, card_data, sizeof(card_data)); | |
1466 | ||
3ac22ee1 | 1467 | LED_A_OFF(); |
cee5a30d | 1468 | } |
1469 | ||
ece38ef3 | 1470 | |
c3963755 | 1471 | void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) { |
c8dd9b09 | 1472 | |
ece38ef3 | 1473 | LED_A_ON(); |
1474 | ||
1475 | bool use_credit_key = false; | |
cb29e00a | 1476 | uint8_t card_data[USB_CMD_DATA_SIZE]={0}; |
39d3ce5d MHS |
1477 | uint16_t block_crc_LUT[255] = {0}; |
1478 | ||
17505ce2 | 1479 | //Generate a lookup table for block crc |
1480 | for (int block = 0; block < 255; block++){ | |
1481 | char bl = block; | |
1482 | block_crc_LUT[block] = iclass_crc16(&bl ,1); | |
39d3ce5d MHS |
1483 | } |
1484 | //Dbprintf("Lookup table: %02x %02x %02x" ,block_crc_LUT[0],block_crc_LUT[1],block_crc_LUT[2]); | |
c8dd9b09 | 1485 | |
ece38ef3 | 1486 | uint8_t readcheck_cc[] = { ICLASS_CMD_READCHECK_KD, 0x02 }; |
1487 | if (use_credit_key) | |
1488 | readcheck_cc[0] = ICLASS_CMD_READCHECK_KC; | |
c3963755 | 1489 | uint8_t check[] = { 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
1490 | uint8_t read[] = { 0x0c, 0x00, 0x00, 0x00 }; | |
17505ce2 | 1491 | |
1492 | uint16_t crc = 0; | |
1493 | uint8_t cardsize = 0; | |
1494 | uint8_t mem = 0; | |
1495 | ||
1496 | static struct memory_t { | |
1497 | int k16; | |
1498 | int book; | |
1499 | int k2; | |
1500 | int lockauth; | |
1501 | int keyaccess; | |
c3963755 | 1502 | } memory; |
17505ce2 | 1503 | |
f71f4deb | 1504 | uint8_t resp[ICLASS_BUFFER_SIZE]; |
17505ce2 | 1505 | |
44964fd1 | 1506 | set_tracing(true); |
c41dd5f9 | 1507 | clear_trace(); |
1508 | Iso15693InitReader(); | |
c3963755 | 1509 | |
c41dd5f9 | 1510 | StartCountSspClk(); |
1511 | uint32_t start_time = 0; | |
1512 | uint32_t eof_time = 0; | |
ece38ef3 | 1513 | |
17505ce2 | 1514 | while (!BUTTON_PRESS()) { |
1515 | ||
39d3ce5d MHS |
1516 | WDT_HIT(); |
1517 | ||
17505ce2 | 1518 | if (!get_tracing()) { |
c3963755 | 1519 | DbpString("Trace full"); |
1520 | break; | |
1521 | } | |
17505ce2 | 1522 | |
ece38ef3 | 1523 | if (!selectIclassTag(card_data, &eof_time)) continue; |
c41dd5f9 | 1524 | |
ece38ef3 | 1525 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
496bb4be | 1526 | if (!sendCmdGetResponseWithRetries(readcheck_cc, sizeof(readcheck_cc), resp, sizeof(resp), 8, 3, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) continue; |
c8dd9b09 | 1527 | |
ece38ef3 | 1528 | // replay captured auth (cc must not have been updated) |
17505ce2 | 1529 | memcpy(check+5, MAC, 4); |
c8dd9b09 | 1530 | |
ece38ef3 | 1531 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
496bb4be | 1532 | if (!sendCmdGetResponseWithRetries(check, sizeof(check), resp, sizeof(resp), 4, 5, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) { |
c8dd9b09 MHS |
1533 | Dbprintf("Error: Authentication Fail!"); |
1534 | continue; | |
1535 | } | |
1536 | ||
39d3ce5d MHS |
1537 | //first get configuration block (block 1) |
1538 | crc = block_crc_LUT[1]; | |
17505ce2 | 1539 | read[1] = 1; |
c8dd9b09 MHS |
1540 | read[2] = crc >> 8; |
1541 | read[3] = crc & 0xff; | |
1542 | ||
ece38ef3 | 1543 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
496bb4be | 1544 | if (!sendCmdGetResponseWithRetries(read, sizeof(read), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) { |
c41dd5f9 | 1545 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
39d3ce5d | 1546 | Dbprintf("Dump config (block 1) failed"); |
c8dd9b09 MHS |
1547 | continue; |
1548 | } | |
1549 | ||
17505ce2 | 1550 | mem = resp[5]; |
1551 | memory.k16 = (mem & 0x80); | |
1552 | memory.book = (mem & 0x20); | |
1553 | memory.k2 = (mem & 0x8); | |
1554 | memory.lockauth = (mem & 0x2); | |
1555 | memory.keyaccess = (mem & 0x1); | |
c8dd9b09 MHS |
1556 | |
1557 | cardsize = memory.k16 ? 255 : 32; | |
1558 | WDT_HIT(); | |
cb29e00a | 1559 | //Set card_data to all zeroes, we'll fill it with data |
17505ce2 | 1560 | memset(card_data, 0x0, USB_CMD_DATA_SIZE); |
1561 | uint8_t failedRead = 0; | |
1562 | uint32_t stored_data_length = 0; | |
c8dd9b09 | 1563 | //then loop around remaining blocks |
17505ce2 | 1564 | for (int block = 0; block < cardsize; block++) { |
1565 | read[1] = block; | |
39d3ce5d | 1566 | crc = block_crc_LUT[block]; |
c8dd9b09 MHS |
1567 | read[2] = crc >> 8; |
1568 | read[3] = crc & 0xff; | |
1569 | ||
ece38ef3 | 1570 | start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; |
496bb4be | 1571 | if (sendCmdGetResponseWithRetries(read, sizeof(read), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) { |
c8dd9b09 | 1572 | Dbprintf(" %02x: %02x %02x %02x %02x %02x %02x %02x %02x", |
17505ce2 | 1573 | block, resp[0], resp[1], resp[2], |
c8dd9b09 MHS |
1574 | resp[3], resp[4], resp[5], |
1575 | resp[6], resp[7]); | |
1576 | ||
cb29e00a | 1577 | //Fill up the buffer |
17505ce2 | 1578 | memcpy(card_data+stored_data_length, resp, 8); |
cb29e00a | 1579 | stored_data_length += 8; |
17505ce2 | 1580 | if (stored_data_length +8 > USB_CMD_DATA_SIZE) { |
1581 | //Time to send this off and start afresh | |
cb29e00a MHS |
1582 | cmd_send(CMD_ACK, |
1583 | stored_data_length,//data length | |
1584 | failedRead,//Failed blocks? | |
1585 | 0,//Not used ATM | |
1586 | card_data, stored_data_length); | |
1587 | //reset | |
1588 | stored_data_length = 0; | |
1589 | failedRead = 0; | |
1590 | } | |
1591 | ||
17505ce2 | 1592 | } else { |
cb29e00a | 1593 | failedRead = 1; |
17505ce2 | 1594 | stored_data_length += 8;//Otherwise, data becomes misaligned |
c8dd9b09 | 1595 | Dbprintf("Failed to dump block %d", block); |
c3963755 | 1596 | } |
1597 | } | |
428d6221 | 1598 | |
cb29e00a | 1599 | //Send off any remaining data |
17505ce2 | 1600 | if (stored_data_length > 0) { |
cb29e00a MHS |
1601 | cmd_send(CMD_ACK, |
1602 | stored_data_length,//data length | |
1603 | failedRead,//Failed blocks? | |
1604 | 0,//Not used ATM | |
17505ce2 | 1605 | card_data, |
1606 | stored_data_length); | |
cb29e00a | 1607 | } |
c8dd9b09 MHS |
1608 | //If we got here, let's break |
1609 | break; | |
c3963755 | 1610 | } |
cb29e00a MHS |
1611 | //Signal end of transmission |
1612 | cmd_send(CMD_ACK, | |
1613 | 0,//data length | |
1614 | 0,//Failed blocks? | |
1615 | 0,//Not used ATM | |
17505ce2 | 1616 | card_data, |
1617 | 0); | |
cb29e00a | 1618 | |
f784539d | 1619 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); |
ece38ef3 | 1620 | LED_D_OFF(); |
c3963755 | 1621 | LED_A_OFF(); |
1622 | } | |
1623 | ||
ece38ef3 | 1624 | |
1625 | void iClass_Check(uint8_t *MAC) { | |
496bb4be | 1626 | uint8_t check[9] = {ICLASS_CMD_CHECK_KD, 0x00}; |
ece38ef3 | 1627 | uint8_t resp[4]; |
17505ce2 | 1628 | memcpy(check+5, MAC, 4); |
c41dd5f9 | 1629 | uint32_t eof_time; |
496bb4be | 1630 | bool isOK = sendCmdGetResponseWithRetries(check, sizeof(check), resp, sizeof(resp), 4, 6, 0, ICLASS_READER_TIMEOUT_OTHERS, &eof_time); |
ece38ef3 | 1631 | cmd_send(CMD_ACK, isOK, 0, 0, resp, sizeof(resp)); |
1632 | } | |
1633 | ||
1634 | ||
1635 | void iClass_Readcheck(uint8_t block, bool use_credit_key) { | |
1636 | uint8_t readcheck[2] = {ICLASS_CMD_READCHECK_KD, block}; | |
1637 | if (use_credit_key) { | |
1638 | readcheck[0] = ICLASS_CMD_READCHECK_KC; | |
1639 | } | |
1640 | uint8_t resp[8]; | |
1641 | uint32_t eof_time; | |
496bb4be | 1642 | bool isOK = sendCmdGetResponseWithRetries(readcheck, sizeof(readcheck), resp, sizeof(resp), 8, 6, 0, ICLASS_READER_TIMEOUT_OTHERS, &eof_time); |
ece38ef3 | 1643 | cmd_send(CMD_ACK, isOK, 0, 0, resp, sizeof(resp)); |
aa53efc3 | 1644 | } |
17505ce2 | 1645 | |
ece38ef3 | 1646 | |
f784539d | 1647 | static bool iClass_ReadBlock(uint8_t blockNo, uint8_t *readdata) { |
3ac22ee1 | 1648 | uint8_t readcmd[] = {ICLASS_CMD_READ_OR_IDENTIFY, blockNo, 0x00, 0x00}; //0x88, 0x00 // can i use 0C? |
1649 | char bl = blockNo; | |
1650 | uint16_t rdCrc = iclass_crc16(&bl, 1); | |
1651 | readcmd[2] = rdCrc >> 8; | |
1652 | readcmd[3] = rdCrc & 0xff; | |
c41dd5f9 | 1653 | uint8_t resp[10]; |
c41dd5f9 | 1654 | uint32_t eof_time; |
ece38ef3 | 1655 | |
496bb4be | 1656 | bool isOK = sendCmdGetResponseWithRetries(readcmd, sizeof(readcmd), resp, sizeof(resp), 10, 10, 0, ICLASS_READER_TIMEOUT_OTHERS, &eof_time); |
3ac22ee1 | 1657 | memcpy(readdata, resp, sizeof(resp)); |
fecd8202 | 1658 | |
aa53efc3 | 1659 | return isOK; |
1660 | } | |
fecd8202 | 1661 | |
ece38ef3 | 1662 | |
3ac22ee1 | 1663 | void iClass_ReadBlk(uint8_t blockno) { |
ece38ef3 | 1664 | |
1665 | LED_A_ON(); | |
1666 | ||
3ac22ee1 | 1667 | uint8_t readblockdata[] = {0,0,0,0,0,0,0,0,0,0}; |
496bb4be | 1668 | bool isOK = iClass_ReadBlock(blockno, readblockdata); |
3ac22ee1 | 1669 | cmd_send(CMD_ACK, isOK, 0, 0, readblockdata, 8); |
f784539d | 1670 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); |
ece38ef3 | 1671 | LED_D_OFF(); |
1672 | ||
1673 | LED_A_OFF(); | |
aa53efc3 | 1674 | } |
fecd8202 | 1675 | |
496bb4be | 1676 | |
1677 | void iClass_Dump(uint8_t startblock, uint8_t numblks) { | |
ece38ef3 | 1678 | |
1679 | LED_A_ON(); | |
1680 | ||
496bb4be | 1681 | uint8_t readblockdata[USB_CMD_DATA_SIZE+2] = {0}; |
aa53efc3 | 1682 | bool isOK = false; |
496bb4be | 1683 | uint16_t blkCnt = 0; |
fecd8202 | 1684 | |
496bb4be | 1685 | if (numblks > USB_CMD_DATA_SIZE / 8) { |
1686 | numblks = USB_CMD_DATA_SIZE / 8; | |
aa53efc3 | 1687 | } |
496bb4be | 1688 | |
1689 | for (blkCnt = 0; blkCnt < numblks; blkCnt++) { | |
1690 | isOK = iClass_ReadBlock(startblock+blkCnt, readblockdata+8*blkCnt); | |
1691 | if (!isOK) { | |
1692 | Dbprintf("Block %02X failed to read", startblock+blkCnt); | |
1693 | break; | |
fecd8202 | 1694 | } |
aa53efc3 | 1695 | } |
ece38ef3 | 1696 | |
496bb4be | 1697 | cmd_send(CMD_ACK, isOK, blkCnt, 0, readblockdata, blkCnt*8); |
ece38ef3 | 1698 | |
1699 | LED_A_OFF(); | |
aa53efc3 | 1700 | } |
1701 | ||
ece38ef3 | 1702 | |
17505ce2 | 1703 | static bool iClass_WriteBlock_ext(uint8_t blockNo, uint8_t *data) { |
ece38ef3 | 1704 | |
496bb4be | 1705 | uint8_t write[16] = {ICLASS_CMD_UPDATE, blockNo}; |
aa53efc3 | 1706 | memcpy(write+2, data, 12); // data + mac |
496bb4be | 1707 | AppendCrc(write+1, 13); |
c41dd5f9 | 1708 | uint8_t resp[10]; |
671ff89f | 1709 | bool isOK = false; |
c41dd5f9 | 1710 | uint32_t eof_time = 0; |
ece38ef3 | 1711 | |
496bb4be | 1712 | isOK = sendCmdGetResponseWithRetries(write, sizeof(write), resp, sizeof(resp), 10, 10, 0, ICLASS_READER_TIMEOUT_UPDATE, &eof_time); |
1713 | if (isOK && blockNo != 3 && blockNo != 4 && memcmp(write+2, resp, 8)) { // check response | |
1714 | isOK = false; | |
fecd8202 | 1715 | } |
ece38ef3 | 1716 | |
aa53efc3 | 1717 | return isOK; |
1718 | } | |
1719 | ||
ece38ef3 | 1720 | |
3ac22ee1 | 1721 | void iClass_WriteBlock(uint8_t blockNo, uint8_t *data) { |
ece38ef3 | 1722 | |
1723 | LED_A_ON(); | |
1724 | ||
3ac22ee1 | 1725 | bool isOK = iClass_WriteBlock_ext(blockNo, data); |
496bb4be | 1726 | if (isOK) { |
17505ce2 | 1727 | Dbprintf("Write block [%02x] successful", blockNo); |
aa53efc3 | 1728 | } else { |
17505ce2 | 1729 | Dbprintf("Write block [%02x] failed", blockNo); |
aa53efc3 | 1730 | } |
17505ce2 | 1731 | cmd_send(CMD_ACK, isOK, 0, 0, 0, 0); |
ece38ef3 | 1732 | |
f784539d | 1733 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); |
ece38ef3 | 1734 | LED_D_OFF(); |
1735 | ||
1736 | LED_A_OFF(); | |
aa53efc3 | 1737 | } |
1738 | ||
496bb4be | 1739 | |
3ac22ee1 | 1740 | void iClass_Clone(uint8_t startblock, uint8_t endblock, uint8_t *data) { |
aa53efc3 | 1741 | int i; |
1742 | int written = 0; | |
1743 | int total_block = (endblock - startblock) + 1; | |
17505ce2 | 1744 | for (i = 0; i < total_block; i++) { |
aa53efc3 | 1745 | // block number |
17505ce2 | 1746 | if (iClass_WriteBlock_ext(i+startblock, data + (i*12))){ |
1747 | Dbprintf("Write block [%02x] successful", i + startblock); | |
aa53efc3 | 1748 | written++; |
1749 | } else { | |
17505ce2 | 1750 | if (iClass_WriteBlock_ext(i+startblock, data + (i*12))){ |
1751 | Dbprintf("Write block [%02x] successful", i + startblock); | |
aa53efc3 | 1752 | written++; |
1753 | } else { | |
17505ce2 | 1754 | Dbprintf("Write block [%02x] failed", i + startblock); |
aa53efc3 | 1755 | } |
1756 | } | |
1757 | } | |
1758 | if (written == total_block) | |
1759 | Dbprintf("Clone complete"); | |
1760 | else | |
17505ce2 | 1761 | Dbprintf("Clone incomplete"); |
aa53efc3 | 1762 | |
17505ce2 | 1763 | cmd_send(CMD_ACK, 1, 0, 0, 0, 0); |
aa53efc3 | 1764 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); |
ece38ef3 | 1765 | LED_D_OFF(); |
1766 | LED_A_OFF(); | |
aa53efc3 | 1767 | } |