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20f9a2a1 1//-----------------------------------------------------------------------------\r
b62a5a84 2// Merlok, May 2011, 2012\r
8f51ddb0 3// Many authors, whom made it possible\r
20f9a2a1
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4//\r
5// This code is licensed to you under the terms of the GNU GPL, version 2 or,\r
6// at your option, any later version. See the LICENSE.txt file for the text of\r
7// the license.\r
8//-----------------------------------------------------------------------------\r
8f51ddb0 9// Work with mifare cards.\r
20f9a2a1
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10//-----------------------------------------------------------------------------\r
11\r
12#include "proxmark3.h"\r
13#include "apps.h"\r
14#include "util.h"\r
15#include "string.h"\r
16\r
17#include "iso14443crc.h"\r
18#include "iso14443a.h"\r
19#include "crapto1.h"\r
20#include "mifareutil.h"\r
21\r
f397b5cc
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22int MF_DBGLEVEL = MF_DBG_ALL;\r
23\r
8f51ddb0 24// memory management\r
6a1f2d82 25uint8_t* get_bigbufptr_recvrespbuf(void) {\r
26 return (((uint8_t *)BigBuf) + RECV_RESP_OFFSET); \r
8f51ddb0 27}\r
6a1f2d82 28uint8_t* get_bigbufptr_recvcmdbuf(void) {\r
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29 return (((uint8_t *)BigBuf) + RECV_CMD_OFFSET); \r
30}\r
6a1f2d82 31uint8_t* get_bigbufptr_emlcardmem(void) {\r
32 return (((uint8_t *)BigBuf) + CARD_MEMORY_OFFSET);\r
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33}\r
34\r
35// crypto1 helpers\r
36void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){\r
37 uint8_t bt = 0;\r
38 int i;\r
39 \r
40 if (len != 1) {\r
41 for (i = 0; i < len; i++)\r
42 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];\r
43 } else {\r
44 bt = 0;\r
45 for (i = 0; i < 4; i++)\r
46 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i;\r
47 \r
48 data[0] = bt;\r
49 }\r
50 return;\r
51}\r
52\r
6a1f2d82 53void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {\r
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54 uint8_t bt = 0;\r
55 int i;\r
6a1f2d82 56 par[0] = 0;\r
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57 for (i = 0; i < len; i++) {\r
58 bt = data[i];\r
59 data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];\r
6a1f2d82 60 if((i&0x0007) == 0) par[i>>3] = 0;\r
61 par[i>>3] |= (((filter(pcs->odd) ^ oddparity(bt)) & 0x01)<<(7-(i&0x0007)));\r
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62 } \r
63 return;\r
64}\r
65\r
66uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {\r
67 uint8_t bt = 0;\r
68 int i;\r
69\r
70 for (i = 0; i < 4; i++)\r
71 bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;\r
72 \r
73 return bt;\r
20f9a2a1
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74}\r
75\r
8f51ddb0 76// send commands\r
6a1f2d82 77int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)\r
f89c7050 78{\r
6a1f2d82 79 return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, answer_parity, timing);
981bd429 80}
81
6a1f2d82 82int mifare_sendcmd_short_special(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
981bd429 83{
6a1f2d82 84 uint8_t dcmd[8];//, ecmd[4];
85 //uint32_t par=0;
981bd429 86
6a1f2d82 87 dcmd[0] = cmd;
88 dcmd[1] = data[0];
981bd429 89 dcmd[2] = data[1];
90 dcmd[3] = data[2];
91 dcmd[4] = data[3];
92 dcmd[5] = data[4];
93 AppendCrc14443a(dcmd, 6);
94 //Dbprintf("Data command: %02x", dcmd[0]);
95 //Dbprintf("Data R: %02x %02x %02x %02x %02x %02x %02x", dcmd[1],dcmd[2],dcmd[3],dcmd[4],dcmd[5],dcmd[6],dcmd[7]);
96
97 //memcpy(ecmd, dcmd, sizeof(dcmd));
98 ReaderTransmit(dcmd, sizeof(dcmd), NULL);
6a1f2d82 99 int len = ReaderReceive(answer, answer_parity);
981bd429 100 if(!len)
101 {
102 if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");
103 return 2;
104 }
105 return len;
106}
107
6a1f2d82 108int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)
981bd429 109{
110 uint8_t dcmd[4], ecmd[4];
6a1f2d82 111 uint16_t pos, res;\r
112 uint8_t par[1]; // 1 Byte parity is enough here\r
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113 dcmd[0] = cmd;\r
114 dcmd[1] = data;\r
115 AppendCrc14443a(dcmd, 2);\r
116 \r
117 memcpy(ecmd, dcmd, sizeof(dcmd));\r
118 \r
119 if (crypted) {\r
6a1f2d82 120 par[0] = 0;\r
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121 for (pos = 0; pos < 4; pos++)\r
122 {\r
123 ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];\r
6a1f2d82 124 par[0] |= (((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) << (7-pos));\r
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125 } \r
126\r
9492e0b0 127 ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);\r
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128\r
129 } else {\r
9492e0b0 130 ReaderTransmit(dcmd, sizeof(dcmd), timing);\r
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131 }\r
132\r
6a1f2d82 133 int len = ReaderReceive(answer, par);\r
134 \r
135 if (answer_parity) *answer_parity = par[0];\r
f89c7050 136 \r
4abe4f58 137 if (crypted == CRYPT_ALL) {\r
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138 if (len == 1) {\r
139 res = 0;\r
140 for (pos = 0; pos < 4; pos++)\r
141 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;\r
142 \r
143 answer[0] = res;\r
144 \r
145 } else {\r
146 for (pos = 0; pos < len; pos++)\r
147 {\r
148 answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];\r
149 }\r
150 }\r
151 }\r
152 \r
153 return len;\r
154}\r
155\r
8f51ddb0 156// mifare commands\r
6a1f2d82 157int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) \r
f89c7050 158{\r
9492e0b0 159 return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);\r
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160}\r
161\r
6a1f2d82 162int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested, uint32_t *ntptr, uint32_t *timing) \r
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163{\r
164 // variables\r
4abe4f58 165 int len; \r
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166 uint32_t pos;\r
167 uint8_t tmp4[4];\r
6a1f2d82 168 uint8_t par[1] = {0};\r
169 byte_t nr[4];\r
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170 uint32_t nt, ntpp; // Supplied tag nonce\r
171 \r
172 uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };\r
6a1f2d82 173 uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
174 uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
175 \r
4abe4f58 176 // Transmit MIFARE_CLASSIC_AUTH\r
6a1f2d82 177 len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);\r
178 if (MF_DBGLEVEL >= 4) Dbprintf("rand tag nonce len: %x", len); \r
4abe4f58 179 if (len != 4) return 1;\r
20f9a2a1 180 \r
6a1f2d82 181 // "random" reader nonce:\r
182 nr[0] = 0x55;\r
183 nr[1] = 0x41;\r
184 nr[2] = 0x49;\r
185 nr[3] = 0x92; \r
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186 \r
187 // Save the tag nonce (nt)\r
188 nt = bytes_to_num(receivedAnswer, 4);\r
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189\r
190 // ----------------------------- crypto1 create\r
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191 if (isNested)\r
192 crypto1_destroy(pcs);\r
193\r
194 // Init cipher with key\r
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195 crypto1_create(pcs, ui64Key);\r
196\r
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197 if (isNested == AUTH_NESTED) {\r
198 // decrypt nt with help of new key \r
199 nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;\r
200 } else {\r
201 // Load (plain) uid^nt into the cipher\r
202 crypto1_word(pcs, nt ^ uid, 0);\r
203 }\r
204\r
205 // some statistic\r
f397b5cc 206 if (!ntptr && (MF_DBGLEVEL >= 3))\r
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207 Dbprintf("auth uid: %08x nt: %08x", uid, nt); \r
208 \r
209 // save Nt\r
210 if (ntptr)\r
211 *ntptr = nt;\r
20f9a2a1 212\r
6a1f2d82 213 \r
4abe4f58 214 // Generate (encrypted) nr+parity by loading it into the cipher (Nr)\r
6a1f2d82 215 par[0] = 0;\r
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216 for (pos = 0; pos < 4; pos++)\r
217 {\r
6a1f2d82 218 mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];\r
219 par[0] |= (((filter(pcs->odd) ^ oddparity(nr[pos])) & 0x01) << (7-pos));\r
4abe4f58 220 } \r
20f9a2a1 221 \r
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222 // Skip 32 bits in pseudo random generator\r
223 nt = prng_successor(nt,32);\r
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224\r
225 // ar+parity\r
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226 for (pos = 4; pos < 8; pos++)\r
227 {\r
20f9a2a1 228 nt = prng_successor(nt,8);\r
4abe4f58 229 mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);\r
6a1f2d82 230 par[0] |= (((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) << (7-pos));\r
4abe4f58 231 } \r
20f9a2a1 232 \r
4abe4f58 233 // Transmit reader nonce and reader answer\r
9492e0b0 234 ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);\r
20f9a2a1 235\r
6a1f2d82 236 // Receive 4 byte tag answer\r
237 len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r
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238 if (!len)\r
239 {\r
f397b5cc 240 if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");\r
20f9a2a1 241 return 2;\r
4abe4f58 242 }\r
20f9a2a1 243 \r
4abe4f58 244 memcpy(tmp4, receivedAnswer, 4);\r
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245 ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);\r
246 \r
247 if (ntpp != bytes_to_num(tmp4, 4)) {\r
f397b5cc 248 if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response.");\r
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249 return 3;\r
250 }\r
251\r
252 return 0;\r
253}\r
254\r
255int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) \r
256{\r
257 // variables\r
4abe4f58 258 int len; \r
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259 uint8_t bt[2];\r
260 \r
6a1f2d82 261 uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
262 uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
20f9a2a1 263 \r
4abe4f58 264 // command MIFARE_CLASSIC_READBLOCK\r
6a1f2d82 265 len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
20f9a2a1 266 if (len == 1) {\r
f397b5cc 267 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); \r
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268 return 1;\r
269 }\r
270 if (len != 18) {\r
f397b5cc 271 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len); \r
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272 return 2;\r
273 }\r
274\r
275 memcpy(bt, receivedAnswer + 16, 2);\r
4abe4f58 276 AppendCrc14443a(receivedAnswer, 16);\r
20f9a2a1 277 if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {\r
f397b5cc 278 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error."); \r
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279 return 3;\r
280 }\r
281 \r
282 memcpy(blockData, receivedAnswer, 16);\r
981bd429 283 return 0;
284}
285
286int mifare_ultra_readblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
287{
288 // variables
6a1f2d82 289 uint16_t len;
981bd429 290 uint8_t bt[2];
291
6a1f2d82 292 uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
293 uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
981bd429 294
295 // command MIFARE_CLASSIC_READBLOCK
6a1f2d82 296 len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
981bd429 297 if (len == 1) {
298 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
299 return 1;
300 }
301 if (len != 18) {
302 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len);
303 return 2;
304 }
305
306 memcpy(bt, receivedAnswer + 16, 2);
307 AppendCrc14443a(receivedAnswer, 16);
308 if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
309 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error.");
310 return 3;
311 }
312
313 memcpy(blockData, receivedAnswer, 14);
314 return 0;
315}
316
317
318int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
319{
320 // variables
4abe4f58 321 int len, i; \r
20f9a2a1 322 uint32_t pos;\r
6a1f2d82 323 uint8_t par[3] = {0}; // enough for 18 Bytes to send\r
4abe4f58 324 byte_t res;\r
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325 \r
326 uint8_t d_block[18], d_block_enc[18];\r
6a1f2d82 327 uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
328 uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
20f9a2a1 329 \r
4abe4f58 330 // command MIFARE_CLASSIC_WRITEBLOCK\r
6a1f2d82 331 len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r
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332\r
333 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK\r
f397b5cc 334 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); \r
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335 return 1;\r
336 }\r
337 \r
338 memcpy(d_block, blockData, 16);\r
339 AppendCrc14443a(d_block, 16);\r
340 \r
341 // crypto\r
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342 for (pos = 0; pos < 18; pos++)\r
343 {\r
344 d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];\r
6a1f2d82 345 par[pos>>3] |= (((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));\r
4abe4f58 346 } \r
20f9a2a1 347\r
9492e0b0 348 ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);\r
20f9a2a1 349\r
4abe4f58 350 // Receive the response\r
6a1f2d82 351 len = ReaderReceive(receivedAnswer, receivedAnswerPar); \r
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352\r
353 res = 0;\r
354 for (i = 0; i < 4; i++)\r
355 res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;\r
356\r
357 if ((len != 1) || (res != 0x0A)) {\r
f397b5cc 358 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd send data2 Error: %02x", res); \r
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359 return 2;\r
360 }\r
361 \r
981bd429 362 return 0;
363}
364
365int mifare_ultra_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
366{
6a1f2d82 367 // variables
368 uint16_t len;
369 uint8_t par[3] = {0}; // enough for 18 parity bits
981bd429 370
6a1f2d82 371 uint8_t d_block[18];
372 uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();\r
373 uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
981bd429 374
6a1f2d82 375 // command MIFARE_CLASSIC_WRITEBLOCK
376 len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
981bd429 377
6a1f2d82 378 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
379 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
380 return 1;
381 }
981bd429 382
383 memset(d_block,'\0',18);
384 memcpy(d_block, blockData, 16);
6a1f2d82 385 AppendCrc14443a(d_block, 16);
981bd429 386
387 ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
388
6a1f2d82 389 // Receive the response
390 len = ReaderReceive(receivedAnswer, receivedAnswerPar);
981bd429 391
392 if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
6a1f2d82 393 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
394 return 2;
395 }
981bd429 396
6a1f2d82 397 return 0;
981bd429 398}
399
400int mifare_ultra_special_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
401{
6a1f2d82 402 uint16_t len;
981bd429 403
6a1f2d82 404 uint8_t d_block[8];
405 uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
406 uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
981bd429 407
6a1f2d82 408 // command MIFARE_CLASSIC_WRITEBLOCK
981bd429 409 memset(d_block,'\0',8);
410 d_block[0]= blockNo;
411 memcpy(d_block+1,blockData,4);
412 AppendCrc14443a(d_block, 6);
413
414 //i know the data send here is correct
6a1f2d82 415 len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer, receivedAnswerPar, NULL);
981bd429 416
6a1f2d82 417 if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK
418 if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
419 return 1;
420 }
421\r
422 return 0;
981bd429 423}
424
425int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
426{
427 // variables
6a1f2d82 428 uint16_t len; \r
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429 \r
430 // Mifare HALT\r
6a1f2d82 431 uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
432 uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;\r
20f9a2a1 433\r
6a1f2d82 434 len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);\r
4abe4f58 435 if (len != 0) {\r
f397b5cc 436 if (MF_DBGLEVEL >= 1) Dbprintf("halt error. response len: %x", len); \r
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437 return 1;\r
438 }\r
439\r
981bd429 440 return 0;
441}
442
443int mifare_ultra_halt(uint32_t uid)
444{
6a1f2d82 445 uint16_t len;
981bd429 446
447 // Mifare HALT
6a1f2d82 448 uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();\r
449 uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
981bd429 450
6a1f2d82 451 len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
981bd429 452 if (len != 0) {
453 if (MF_DBGLEVEL >= 1) Dbprintf("halt error. response len: %x", len);
454 return 1;
455 }
456
457 return 0;
458}
459
baeaf579 460\r
461// Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),\r
462// plus evtl. 8 sectors with 16 blocks each (4k cards)\r
463uint8_t NumBlocksPerSector(uint8_t sectorNo) \r
464{\r
465 if (sectorNo < 32) \r
466 return 4;\r
467 else\r
468 return 16;\r
469}\r
470\r
471uint8_t FirstBlockOfSector(uint8_t sectorNo) \r
472{\r
473 if (sectorNo < 32)\r
474 return sectorNo * 4;\r
475 else\r
476 return 32*4 + (sectorNo - 32) * 16;\r
477 \r
478}\r
479\r
480\r
981bd429 481// work with emulator memory
482void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
6a1f2d82 483 uint8_t* emCARD = get_bigbufptr_emlcardmem();
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484 \r
485 memcpy(emCARD + blockNum * 16, data, blocksCount * 16);\r
486}\r
487\r
488void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r
6a1f2d82 489 uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
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490 \r
491 memcpy(data, emCARD + blockNum * 16, blocksCount * 16);\r
492}\r
493\r
494void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {\r
6a1f2d82 495 uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
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496 \r
497 memcpy(data, emCARD + bytePtr, byteCount);\r
498}\r
499\r
0014cb46 500int emlCheckValBl(int blockNum) {\r
6a1f2d82 501 uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
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502 uint8_t* data = emCARD + blockNum * 16;\r
503\r
504 if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||\r
505 (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||\r
506 (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||\r
507 (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||\r
508 (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||\r
509 (data[12] != (data[15] ^ 0xff))\r
510 ) \r
511 return 1;\r
512 return 0;\r
513}\r
514\r
515int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {\r
6a1f2d82 516 uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
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517 uint8_t* data = emCARD + blockNum * 16;\r
518 \r
519 if (emlCheckValBl(blockNum)) {\r
520 return 1;\r
521 }\r
522 \r
523 memcpy(blReg, data, 4);\r
524 *blBlock = data[12];\r
525 \r
526 return 0;\r
527}\r
528\r
529int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {\r
6a1f2d82 530 uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
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531 uint8_t* data = emCARD + blockNum * 16;\r
532 \r
533 memcpy(data + 0, &blReg, 4);\r
534 memcpy(data + 8, &blReg, 4);\r
535 blReg = blReg ^ 0xffffffff;\r
536 memcpy(data + 4, &blReg, 4);\r
537 \r
538 data[12] = blBlock;\r
539 data[13] = blBlock ^ 0xff;\r
540 data[14] = blBlock;\r
541 data[15] = blBlock ^ 0xff;\r
542 \r
543 return 0;\r
544}\r
545\r
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546uint64_t emlGetKey(int sectorNum, int keyType) {\r
547 uint8_t key[6];\r
6a1f2d82 548 uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
8556b852 549 \r
baeaf579 550 memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);\r
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551 return bytes_to_num(key, 6);\r
552}\r
553\r
8f51ddb0 554void emlClearMem(void) {\r
aea4d766 555 int b;\r
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556 \r
557 const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};\r
8f51ddb0 558 const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};\r
6a1f2d82 559 uint8_t* emCARD = get_bigbufptr_emlcardmem();\r
aea4d766 560 \r
6a1f2d82 561 memset(emCARD, 0, CARD_MEMORY_SIZE);\r
aea4d766 562 \r
563 // fill sectors trailer data\r
564 for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {\r
565 emlSetMem((uint8_t *)trailer, b , 1);\r
566 } \r
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567\r
568 // uid\r
569 emlSetMem((uint8_t *)uid, 0, 1);\r
570 return;\r
571}\r
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