| 1 | //-----------------------------------------------------------------------------\r |
| 2 | // Merlok, May 2011, 2012\r |
| 3 | // Many authors, whom made it possible\r |
| 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 |
| 9 | // Work with mifare cards.\r |
| 10 | //-----------------------------------------------------------------------------\r |
| 11 | #include "mifareutil.h"\r |
| 12 | \r |
| 13 | int MF_DBGLEVEL = MF_DBG_ALL;\r |
| 14 | \r |
| 15 | // crypto1 helpers\r |
| 16 | void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){\r |
| 17 | uint8_t bt = 0;\r |
| 18 | int i;\r |
| 19 | \r |
| 20 | if (len != 1) {\r |
| 21 | for (i = 0; i < len; i++)\r |
| 22 | data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];\r |
| 23 | } else {\r |
| 24 | bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 0)) << 0;\r |
| 25 | bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 1)) << 1;\r |
| 26 | bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 2)) << 2;\r |
| 27 | bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 3)) << 3;\r |
| 28 | data[0] = bt;\r |
| 29 | }\r |
| 30 | return;\r |
| 31 | }\r |
| 32 | \r |
| 33 | void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {\r |
| 34 | uint8_t bt = 0;\r |
| 35 | int i;\r |
| 36 | par[0] = 0;\r |
| 37 | \r |
| 38 | for (i = 0; i < len; i++) {\r |
| 39 | bt = data[i];\r |
| 40 | data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];\r |
| 41 | if ( ( i & 0x0007 ) == 0) \r |
| 42 | par[ i >> 3 ] = 0;\r |
| 43 | par[ i >> 3 ] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));\r |
| 44 | } \r |
| 45 | }\r |
| 46 | \r |
| 47 | uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {\r |
| 48 | uint8_t bt = 0;\r |
| 49 | bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 0)) << 0;\r |
| 50 | bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 1)) << 1;\r |
| 51 | bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 2)) << 2;\r |
| 52 | bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 3)) << 3;\r |
| 53 | return bt;\r |
| 54 | }\r |
| 55 | \r |
| 56 | // send X byte basic commands\r |
| 57 | int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing) {\r |
| 58 | uint8_t dcmd[data_size+3];\r |
| 59 | dcmd[0] = cmd;\r |
| 60 | memcpy(dcmd+1, data, data_size);\r |
| 61 | AppendCrc14443a(dcmd, data_size+1);\r |
| 62 | ReaderTransmit(dcmd, sizeof(dcmd), timing);\r |
| 63 | int len = ReaderReceive(answer, answer_parity);\r |
| 64 | if(!len) {\r |
| 65 | if (MF_DBGLEVEL >= MF_DBG_ERROR)\r |
| 66 | Dbprintf("%02X Cmd failed. Card timeout.", cmd);\r |
| 67 | len = ReaderReceive(answer,answer_parity);\r |
| 68 | }\r |
| 69 | return len;\r |
| 70 | }\r |
| 71 | \r |
| 72 | // send 2 byte commands\r |
| 73 | int 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 |
| 74 | uint16_t pos, res;\r |
| 75 | uint8_t dcmd[4] = {cmd, data, 0x00, 0x00};\r |
| 76 | uint8_t ecmd[4] = {0x00, 0x00, 0x00, 0x00};\r |
| 77 | uint8_t par[1] = {0x00}; // 1 Byte parity is enough here\r |
| 78 | AppendCrc14443a(dcmd, 2);\r |
| 79 | memcpy(ecmd, dcmd, sizeof(dcmd));\r |
| 80 | \r |
| 81 | if (crypted) {\r |
| 82 | par[0] = 0;\r |
| 83 | for (pos = 0; pos < 4; pos++) {\r |
| 84 | ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];\r |
| 85 | par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));\r |
| 86 | } \r |
| 87 | ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);\r |
| 88 | } else {\r |
| 89 | ReaderTransmit(dcmd, sizeof(dcmd), timing);\r |
| 90 | }\r |
| 91 | \r |
| 92 | int len = ReaderReceive(answer, par);\r |
| 93 | \r |
| 94 | if (answer_parity) *answer_parity = par[0];\r |
| 95 | \r |
| 96 | if (crypted == CRYPT_ALL) {\r |
| 97 | if (len == 1) {\r |
| 98 | res = 0;\r |
| 99 | res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 0)) << 0;\r |
| 100 | res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 1)) << 1;\r |
| 101 | res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 2)) << 2;\r |
| 102 | res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 3)) << 3;\r |
| 103 | answer[0] = res; \r |
| 104 | } else {\r |
| 105 | for (pos = 0; pos < len; pos++)\r |
| 106 | answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];\r |
| 107 | }\r |
| 108 | }\r |
| 109 | return len;\r |
| 110 | }\r |
| 111 | \r |
| 112 | // mifare classic commands\r |
| 113 | int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) {\r |
| 114 | return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);\r |
| 115 | }\r |
| 116 | \r |
| 117 | int 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 |
| 118 | int len; \r |
| 119 | uint32_t pos;\r |
| 120 | uint8_t par[1] = {0x00};\r |
| 121 | \r |
| 122 | // "random" reader nonce:\r |
| 123 | //byte_t nr[4] = {0x55, 0x41, 0x49, 0x92};\r |
| 124 | fast_prand();\r |
| 125 | byte_t nr[4];\r |
| 126 | num_to_bytes(prand(), 4, nr);\r |
| 127 | //byte_t nr[4] = {0x01, 0x01, 0x01, 0x01};\r |
| 128 | \r |
| 129 | uint32_t nt, ntpp; // Supplied tag nonce\r |
| 130 | \r |
| 131 | uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };\r |
| 132 | uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};\r |
| 133 | uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};\r |
| 134 | \r |
| 135 | // Transmit MIFARE_CLASSIC_AUTH\r |
| 136 | len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);\r |
| 137 | if (MF_DBGLEVEL >= 4) Dbprintf("rand tag nonce len: %x", len); \r |
| 138 | if (len != 4) return 1;\r |
| 139 | \r |
| 140 | // Save the tag nonce (nt)\r |
| 141 | nt = bytes_to_num(receivedAnswer, 4);\r |
| 142 | \r |
| 143 | // ----------------------------- crypto1 create\r |
| 144 | if (isNested)\r |
| 145 | crypto1_destroy(pcs);\r |
| 146 | \r |
| 147 | // Init cipher with key\r |
| 148 | crypto1_create(pcs, ui64Key);\r |
| 149 | \r |
| 150 | if (isNested == AUTH_NESTED) {\r |
| 151 | // decrypt nt with help of new key \r |
| 152 | nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;\r |
| 153 | } else {\r |
| 154 | // Load (plain) uid^nt into the cipher\r |
| 155 | crypto1_word(pcs, nt ^ uid, 0);\r |
| 156 | }\r |
| 157 | \r |
| 158 | // some statistic\r |
| 159 | if (!ntptr && (MF_DBGLEVEL >= 3))\r |
| 160 | Dbprintf("auth uid: %08x nt: %08x", uid, nt); \r |
| 161 | \r |
| 162 | // save Nt\r |
| 163 | if (ntptr)\r |
| 164 | *ntptr = nt;\r |
| 165 | \r |
| 166 | // Generate (encrypted) nr+parity by loading it into the cipher (Nr)\r |
| 167 | par[0] = 0;\r |
| 168 | for (pos = 0; pos < 4; pos++) {\r |
| 169 | mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];\r |
| 170 | par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));\r |
| 171 | } \r |
| 172 | \r |
| 173 | // Skip 32 bits in pseudo random generator\r |
| 174 | nt = prng_successor(nt, 32);\r |
| 175 | \r |
| 176 | // ar+parity\r |
| 177 | for (pos = 4; pos < 8; pos++) {\r |
| 178 | nt = prng_successor(nt,8);\r |
| 179 | mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);\r |
| 180 | par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7-pos));\r |
| 181 | } \r |
| 182 | \r |
| 183 | // Transmit reader nonce and reader answer\r |
| 184 | ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);\r |
| 185 | \r |
| 186 | // Receive 4 byte tag answer\r |
| 187 | len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r |
| 188 | if (!len) {\r |
| 189 | if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");\r |
| 190 | return 2;\r |
| 191 | }\r |
| 192 | \r |
| 193 | ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);\r |
| 194 | \r |
| 195 | if (ntpp != bytes_to_num(receivedAnswer, 4)) {\r |
| 196 | if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response.");\r |
| 197 | return 3;\r |
| 198 | }\r |
| 199 | return 0;\r |
| 200 | }\r |
| 201 | \r |
| 202 | int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {\r |
| 203 | \r |
| 204 | int len; \r |
| 205 | uint8_t bt[2] = {0x00, 0x00}; \r |
| 206 | uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};\r |
| 207 | uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};\r |
| 208 | \r |
| 209 | len = mifare_sendcmd_short(pcs, 1, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r |
| 210 | if (len == 1) {\r |
| 211 | if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); \r |
| 212 | return 1;\r |
| 213 | }\r |
| 214 | if (len != 18) {\r |
| 215 | if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len); \r |
| 216 | return 2;\r |
| 217 | }\r |
| 218 | \r |
| 219 | memcpy(bt, receivedAnswer + 16, 2);\r |
| 220 | AppendCrc14443a(receivedAnswer, 16);\r |
| 221 | if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {\r |
| 222 | if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error."); \r |
| 223 | return 3;\r |
| 224 | }\r |
| 225 | \r |
| 226 | memcpy(blockData, receivedAnswer, 16);\r |
| 227 | return 0;\r |
| 228 | }\r |
| 229 | \r |
| 230 | // mifare ultralight commands\r |
| 231 | int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){\r |
| 232 | \r |
| 233 | uint16_t len = 0;\r |
| 234 | uint8_t resp[4] = {0x00, 0x00, 0x00, 0x00};\r |
| 235 | uint8_t respPar[1] = {0x00};\r |
| 236 | uint8_t key[4] = {0x00, 0x00, 0x00, 0x00};\r |
| 237 | memcpy(key, keybytes, 4);\r |
| 238 | \r |
| 239 | if (MF_DBGLEVEL >= MF_DBG_EXTENDED)\r |
| 240 | Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);\r |
| 241 | \r |
| 242 | len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);\r |
| 243 | \r |
| 244 | if (len != 4) {\r |
| 245 | if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);\r |
| 246 | return 0;\r |
| 247 | }\r |
| 248 | \r |
| 249 | if (MF_DBGLEVEL >= MF_DBG_EXTENDED)\r |
| 250 | Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);\r |
| 251 | \r |
| 252 | memcpy(pack, resp, 4);\r |
| 253 | return 1;\r |
| 254 | }\r |
| 255 | \r |
| 256 | int mifare_ultra_auth(uint8_t *keybytes){\r |
| 257 | \r |
| 258 | /// 3des2k\r |
| 259 | uint8_t random_a[8] = {1,1,1,1,1,1,1,1};\r |
| 260 | uint8_t random_b[8] = {0x00};\r |
| 261 | uint8_t enc_random_b[8] = {0x00};\r |
| 262 | uint8_t rnd_ab[16] = {0x00};\r |
| 263 | uint8_t IV[8] = {0x00};\r |
| 264 | uint8_t key[16] = {0x00};\r |
| 265 | memcpy(key, keybytes, 16);\r |
| 266 | \r |
| 267 | uint16_t len = 0;\r |
| 268 | uint8_t resp[19] = {0x00};\r |
| 269 | uint8_t respPar[3] = {0,0,0};\r |
| 270 | \r |
| 271 | // REQUEST AUTHENTICATION\r |
| 272 | len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);\r |
| 273 | if (len != 11) {\r |
| 274 | if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);\r |
| 275 | return 0;\r |
| 276 | }\r |
| 277 | \r |
| 278 | // tag nonce.\r |
| 279 | memcpy(enc_random_b,resp+1,8);\r |
| 280 | \r |
| 281 | // decrypt nonce.\r |
| 282 | tdes_2key_dec((void*)random_b, (void*)enc_random_b, sizeof(random_b), (const void*)key, IV );\r |
| 283 | rol(random_b,8);\r |
| 284 | memcpy(rnd_ab ,random_a,8);\r |
| 285 | memcpy(rnd_ab+8,random_b,8);\r |
| 286 | \r |
| 287 | if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {\r |
| 288 | Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",\r |
| 289 | enc_random_b[0],enc_random_b[1],enc_random_b[2],enc_random_b[3],enc_random_b[4],enc_random_b[5],enc_random_b[6],enc_random_b[7]);\r |
| 290 | \r |
| 291 | Dbprintf(" B: %02x %02x %02x %02x %02x %02x %02x %02x",\r |
| 292 | random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);\r |
| 293 | \r |
| 294 | Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",\r |
| 295 | rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);\r |
| 296 | \r |
| 297 | Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",\r |
| 298 | rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );\r |
| 299 | }\r |
| 300 | \r |
| 301 | // encrypt out, in, length, key, iv\r |
| 302 | tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);\r |
| 303 | \r |
| 304 | len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);\r |
| 305 | if (len != 11) {\r |
| 306 | if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);\r |
| 307 | return 0;\r |
| 308 | }\r |
| 309 | \r |
| 310 | uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };\r |
| 311 | uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };\r |
| 312 | memcpy(enc_resp, resp+1, 8);\r |
| 313 | \r |
| 314 | // decrypt out, in, length, key, iv \r |
| 315 | tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);\r |
| 316 | if ( memcmp(resp_random_a, random_a, 8) != 0 ) {\r |
| 317 | if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");\r |
| 318 | return 0;\r |
| 319 | }\r |
| 320 | \r |
| 321 | if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {\r |
| 322 | Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x", \r |
| 323 | rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],\r |
| 324 | rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);\r |
| 325 | \r |
| 326 | Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",\r |
| 327 | rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],\r |
| 328 | rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);\r |
| 329 | \r |
| 330 | Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",\r |
| 331 | random_a[0],random_a[1],random_a[2],random_a[3],\r |
| 332 | random_a[4],random_a[5],random_a[6],random_a[7]);\r |
| 333 | \r |
| 334 | Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",\r |
| 335 | resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],\r |
| 336 | resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);\r |
| 337 | }\r |
| 338 | return 1;\r |
| 339 | }\r |
| 340 | \r |
| 341 | int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData) {\r |
| 342 | uint16_t len = 0;\r |
| 343 | uint8_t bt[2] = {0x00, 0x00};\r |
| 344 | uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};\r |
| 345 | uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};\r |
| 346 | \r |
| 347 | len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r |
| 348 | if (len == 1) {\r |
| 349 | if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);\r |
| 350 | return 1;\r |
| 351 | }\r |
| 352 | if (len != 18) {\r |
| 353 | if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);\r |
| 354 | return 2;\r |
| 355 | }\r |
| 356 | \r |
| 357 | memcpy(bt, receivedAnswer + 16, 2);\r |
| 358 | AppendCrc14443a(receivedAnswer, 16);\r |
| 359 | if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {\r |
| 360 | if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");\r |
| 361 | return 3;\r |
| 362 | }\r |
| 363 | \r |
| 364 | memcpy(blockData, receivedAnswer, 14);\r |
| 365 | return 0;\r |
| 366 | }\r |
| 367 | \r |
| 368 | int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {\r |
| 369 | // variables\r |
| 370 | uint16_t len = 0; \r |
| 371 | uint32_t pos = 0;\r |
| 372 | uint8_t par[3] = {0x00, 0x00, 0x00}; // enough for 18 Bytes to send\r |
| 373 | byte_t res = 0;\r |
| 374 | \r |
| 375 | uint8_t d_block[18], d_block_enc[18];\r |
| 376 | uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};\r |
| 377 | uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};\r |
| 378 | \r |
| 379 | // command MIFARE_CLASSIC_WRITEBLOCK\r |
| 380 | len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r |
| 381 | \r |
| 382 | if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK\r |
| 383 | if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); \r |
| 384 | return 1;\r |
| 385 | }\r |
| 386 | \r |
| 387 | memcpy(d_block, blockData, 16);\r |
| 388 | AppendCrc14443a(d_block, 16);\r |
| 389 | \r |
| 390 | // crypto\r |
| 391 | for (pos = 0; pos < 18; pos++) {\r |
| 392 | d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];\r |
| 393 | par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));\r |
| 394 | } \r |
| 395 | \r |
| 396 | ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);\r |
| 397 | \r |
| 398 | // Receive the response\r |
| 399 | len = ReaderReceive(receivedAnswer, receivedAnswerPar); \r |
| 400 | \r |
| 401 | res = 0;\r |
| 402 | res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 0)) << 0;\r |
| 403 | res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 1)) << 1;\r |
| 404 | res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 2)) << 2;\r |
| 405 | res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 3)) << 3;\r |
| 406 | \r |
| 407 | if ((len != 1) || (res != 0x0A)) {\r |
| 408 | if (MF_DBGLEVEL >= 1) Dbprintf("Cmd send data2 Error: %02x", res); \r |
| 409 | return 2;\r |
| 410 | }\r |
| 411 | return 0;\r |
| 412 | }\r |
| 413 | \r |
| 414 | /* // command not needed, but left for future testing\r |
| 415 | int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData) {\r |
| 416 | uint16_t len;\r |
| 417 | uint8_t par[3] = {0}; // enough for 18 parity bits\r |
| 418 | uint8_t d_block[18] = {0x00};\r |
| 419 | uint8_t receivedAnswer[MAX_FRAME_SIZE];\r |
| 420 | uint8_t receivedAnswerPar[MAX_PARITY_SIZE];\r |
| 421 | \r |
| 422 | len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r |
| 423 | \r |
| 424 | if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK\r |
| 425 | if (MF_DBGLEVEL >= MF_DBG_ERROR)\r |
| 426 | Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);\r |
| 427 | return 1;\r |
| 428 | }\r |
| 429 | \r |
| 430 | memcpy(d_block, blockData, 16);\r |
| 431 | AppendCrc14443a(d_block, 16);\r |
| 432 | \r |
| 433 | ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);\r |
| 434 | \r |
| 435 | len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r |
| 436 | \r |
| 437 | if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK\r |
| 438 | if (MF_DBGLEVEL >= MF_DBG_ERROR)\r |
| 439 | Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);\r |
| 440 | return 2;\r |
| 441 | }\r |
| 442 | return 0;\r |
| 443 | }\r |
| 444 | */\r |
| 445 | \r |
| 446 | int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData) {\r |
| 447 | uint16_t len = 0;\r |
| 448 | uint8_t block[5] = {blockNo, 0x00, 0x00, 0x00, 0x00 };\r |
| 449 | uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};\r |
| 450 | uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};\r |
| 451 | \r |
| 452 | // command MIFARE_CLASSIC_WRITEBLOCK\r |
| 453 | memcpy(block+1, blockData, 4);\r |
| 454 | \r |
| 455 | len = mifare_sendcmd( MIFARE_ULC_WRITE, block, sizeof(block), receivedAnswer, receivedAnswerPar, NULL);\r |
| 456 | \r |
| 457 | if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK\r |
| 458 | if (MF_DBGLEVEL >= MF_DBG_ERROR)\r |
| 459 | Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);\r |
| 460 | return 1;\r |
| 461 | }\r |
| 462 | return 0;\r |
| 463 | }\r |
| 464 | int mifare_classic_halt_ex(struct Crypto1State *pcs) {\r |
| 465 | uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};\r |
| 466 | uint16_t len = mifare_sendcmd_short(pcs, (pcs == NULL) ? CRYPT_NONE : CRYPT_ALL, 0x50, 0x00, receivedAnswer, NULL, NULL);\r |
| 467 | if (len != 0) {\r |
| 468 | if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("halt warning. response len: %x", len);\r |
| 469 | return 1;\r |
| 470 | }\r |
| 471 | return 0;\r |
| 472 | }\r |
| 473 | int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) {\r |
| 474 | return mifare_classic_halt_ex(pcs);\r |
| 475 | }\r |
| 476 | \r |
| 477 | int mifare_ultra_halt() {\r |
| 478 | uint16_t len = 0;\r |
| 479 | uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};\r |
| 480 | len = mifare_sendcmd_short(NULL, CRYPT_NONE, 0x50, 0x00, receivedAnswer, NULL, NULL);\r |
| 481 | if (len != 0) {\r |
| 482 | if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len);\r |
| 483 | return 1;\r |
| 484 | }\r |
| 485 | return 0;\r |
| 486 | }\r |
| 487 | \r |
| 488 | \r |
| 489 | // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),\r |
| 490 | // plus evtl. 8 sectors with 16 blocks each (4k cards)\r |
| 491 | uint8_t NumBlocksPerSector(uint8_t sectorNo) {\r |
| 492 | return (sectorNo < 32) ? 4 : 16;\r |
| 493 | }\r |
| 494 | \r |
| 495 | uint8_t FirstBlockOfSector(uint8_t sectorNo) {\r |
| 496 | if (sectorNo < 32)\r |
| 497 | return sectorNo * 4;\r |
| 498 | else\r |
| 499 | return 32*4 + (sectorNo - 32) * 16;\r |
| 500 | \r |
| 501 | }\r |
| 502 | \r |
| 503 | // work with emulator memory\r |
| 504 | void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {\r |
| 505 | emlSetMem_xt(data, blockNum, blocksCount, 16);\r |
| 506 | }\r |
| 507 | \r |
| 508 | void emlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {\r |
| 509 | uint8_t* emCARD = BigBuf_get_EM_addr();\r |
| 510 | memcpy(emCARD + blockNum * blockBtWidth, data, blocksCount * blockBtWidth);\r |
| 511 | }\r |
| 512 | \r |
| 513 | void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r |
| 514 | uint8_t* emCARD = BigBuf_get_EM_addr();\r |
| 515 | memcpy(data, emCARD + blockNum * 16, blocksCount * 16);\r |
| 516 | }\r |
| 517 | \r |
| 518 | void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {\r |
| 519 | uint8_t* emCARD = BigBuf_get_EM_addr();\r |
| 520 | memcpy(data, emCARD + bytePtr, byteCount);\r |
| 521 | }\r |
| 522 | \r |
| 523 | int emlCheckValBl(int blockNum) {\r |
| 524 | uint8_t* emCARD = BigBuf_get_EM_addr();\r |
| 525 | uint8_t* data = emCARD + blockNum * 16;\r |
| 526 | \r |
| 527 | if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||\r |
| 528 | (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||\r |
| 529 | (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||\r |
| 530 | (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||\r |
| 531 | (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||\r |
| 532 | (data[12] != (data[15] ^ 0xff))\r |
| 533 | ) \r |
| 534 | return 1;\r |
| 535 | return 0;\r |
| 536 | }\r |
| 537 | \r |
| 538 | int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {\r |
| 539 | uint8_t* emCARD = BigBuf_get_EM_addr();\r |
| 540 | uint8_t* data = emCARD + blockNum * 16;\r |
| 541 | \r |
| 542 | if (emlCheckValBl(blockNum))\r |
| 543 | return 1;\r |
| 544 | \r |
| 545 | memcpy(blReg, data, 4);\r |
| 546 | *blBlock = data[12];\r |
| 547 | return 0;\r |
| 548 | }\r |
| 549 | \r |
| 550 | int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {\r |
| 551 | uint8_t* emCARD = BigBuf_get_EM_addr();\r |
| 552 | uint8_t* data = emCARD + blockNum * 16;\r |
| 553 | \r |
| 554 | memcpy(data + 0, &blReg, 4);\r |
| 555 | memcpy(data + 8, &blReg, 4);\r |
| 556 | blReg = blReg ^ 0xffffffff;\r |
| 557 | memcpy(data + 4, &blReg, 4);\r |
| 558 | \r |
| 559 | data[12] = blBlock;\r |
| 560 | data[13] = blBlock ^ 0xff;\r |
| 561 | data[14] = blBlock;\r |
| 562 | data[15] = blBlock ^ 0xff;\r |
| 563 | \r |
| 564 | return 0;\r |
| 565 | }\r |
| 566 | \r |
| 567 | uint64_t emlGetKey(int sectorNum, int keyType) {\r |
| 568 | uint8_t key[6] = {0x00};\r |
| 569 | uint8_t* emCARD = BigBuf_get_EM_addr();\r |
| 570 | \r |
| 571 | memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);\r |
| 572 | return bytes_to_num(key, 6);\r |
| 573 | }\r |
| 574 | \r |
| 575 | void emlClearMem(void) {\r |
| 576 | int b;\r |
| 577 | \r |
| 578 | const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};\r |
| 579 | const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};\r |
| 580 | uint8_t* emCARD = BigBuf_get_EM_addr();\r |
| 581 | \r |
| 582 | memset(emCARD, 0, CARD_MEMORY_SIZE);\r |
| 583 | \r |
| 584 | // fill sectors trailer data\r |
| 585 | for(b = 3; b < 256; b<127?(b+=4):(b+=16))\r |
| 586 | emlSetMem((uint8_t *)trailer, b , 1);\r |
| 587 | \r |
| 588 | // uid\r |
| 589 | emlSetMem((uint8_t *)uid, 0, 1);\r |
| 590 | return;\r |
| 591 | }\r |
| 592 | \r |
| 593 | \r |
| 594 | // Mifare desfire commands\r |
| 595 | int mifare_sendcmd_special(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)\r |
| 596 | {\r |
| 597 | uint8_t dcmd[5] = {cmd, data[0], data[1], 0x00, 0x00};\r |
| 598 | AppendCrc14443a(dcmd, 3);\r |
| 599 | \r |
| 600 | ReaderTransmit(dcmd, sizeof(dcmd), NULL);\r |
| 601 | int len = ReaderReceive(answer, answer_parity);\r |
| 602 | if(!len) {\r |
| 603 | if (MF_DBGLEVEL >= MF_DBG_ERROR) \r |
| 604 | Dbprintf("Authentication failed. Card timeout.");\r |
| 605 | return 1;\r |
| 606 | }\r |
| 607 | return len;\r |
| 608 | }\r |
| 609 | \r |
| 610 | int mifare_sendcmd_special2(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer,uint8_t *answer_parity, uint32_t *timing)\r |
| 611 | {\r |
| 612 | uint8_t dcmd[20] = {0x00};\r |
| 613 | dcmd[0] = cmd;\r |
| 614 | memcpy(dcmd+1,data,17);\r |
| 615 | AppendCrc14443a(dcmd, 18);\r |
| 616 | \r |
| 617 | ReaderTransmit(dcmd, sizeof(dcmd), NULL);\r |
| 618 | int len = ReaderReceive(answer, answer_parity);\r |
| 619 | if(!len){\r |
| 620 | if (MF_DBGLEVEL >= MF_DBG_ERROR)\r |
| 621 | Dbprintf("Authentication failed. Card timeout.");\r |
| 622 | return 1;\r |
| 623 | }\r |
| 624 | return len;\r |
| 625 | }\r |
| 626 | \r |
| 627 | int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){\r |
| 628 | \r |
| 629 | int len;\r |
| 630 | // load key, keynumber\r |
| 631 | uint8_t data[2]={0x0a, 0x00};\r |
| 632 | uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};\r |
| 633 | uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};\r |
| 634 | \r |
| 635 | len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);\r |
| 636 | if (len == 1) {\r |
| 637 | if (MF_DBGLEVEL >= MF_DBG_ERROR)\r |
| 638 | Dbprintf("Cmd Error: %02x", receivedAnswer[0]);\r |
| 639 | return 1;\r |
| 640 | }\r |
| 641 | \r |
| 642 | if (len == 12) {\r |
| 643 | if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {\r |
| 644 | Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",\r |
| 645 | receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],\r |
| 646 | receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],\r |
| 647 | receivedAnswer[10],receivedAnswer[11]);\r |
| 648 | }\r |
| 649 | memcpy(blockData, receivedAnswer, 12);\r |
| 650 | return 0;\r |
| 651 | }\r |
| 652 | return 1;\r |
| 653 | }\r |
| 654 | \r |
| 655 | int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){\r |
| 656 | \r |
| 657 | int len;\r |
| 658 | uint8_t data[17] = {0x00};\r |
| 659 | data[0] = 0xAF;\r |
| 660 | memcpy(data+1,key,16);\r |
| 661 | \r |
| 662 | uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};\r |
| 663 | uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};\r |
| 664 | \r |
| 665 | len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);\r |
| 666 | \r |
| 667 | if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {\r |
| 668 | if (MF_DBGLEVEL >= MF_DBG_ERROR)\r |
| 669 | Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);\r |
| 670 | return 1;\r |
| 671 | }\r |
| 672 | \r |
| 673 | if (len == 12){\r |
| 674 | if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {\r |
| 675 | Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",\r |
| 676 | receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],\r |
| 677 | receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],\r |
| 678 | receivedAnswer[10],receivedAnswer[11]);\r |
| 679 | }\r |
| 680 | memcpy(blockData, receivedAnswer, 12);\r |
| 681 | return 0;\r |
| 682 | }\r |
| 683 | return 1;\r |
| 684 | }\r |