X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/7d5169a0e97575732aa971121193a9eb4f8fae57..316493876a7783c9f195eb81a2d5e4212e4b9476:/armsrc/mifareutil.c diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c index 84477a2b..a9e48781 100644 --- a/armsrc/mifareutil.c +++ b/armsrc/mifareutil.c @@ -32,10 +32,10 @@ void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){ for (i = 0; i < len; i++) data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i]; } else { - bt = 0; - for (i = 0; i < 4; i++) - bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i; - + bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 0)) << 0; + bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 1)) << 1; + bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 2)) << 2; + bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 3)) << 3; data[0] = bt; } return; @@ -49,62 +49,53 @@ void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, u for (i = 0; i < len; i++) { bt = data[i]; data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i]; - if((i&0x0007) == 0) - par[i>>3] = 0; - par[i>>3] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007))); + if ( ( i & 0x0007 ) == 0) + par[ i >> 3 ] = 0; + par[ i >> 3 ] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007))); } - return; } uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) { uint8_t bt = 0; - int i; - - for (i = 0; i < 4; i++) - bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i; - + bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 0)) << 0; + bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 1)) << 1; + bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 2)) << 2; + bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 3)) << 3; return bt; } // send X byte basic commands -int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing) -{ +int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing) { uint8_t dcmd[data_size+3]; dcmd[0] = cmd; - memcpy(dcmd+1,data,data_size); + memcpy(dcmd+1, data, data_size); AppendCrc14443a(dcmd, data_size+1); ReaderTransmit(dcmd, sizeof(dcmd), timing); int len = ReaderReceive(answer, answer_parity); if(!len) { - if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("%02X Cmd failed. Card timeout.", cmd); - len = ReaderReceive(answer,answer_parity); - //return 0; + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("%02X Cmd failed. Card timeout.", cmd); + len = ReaderReceive(answer,answer_parity); } return len; } // send 2 byte commands -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) -{ - uint8_t dcmd[4], ecmd[4]; +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) { uint16_t pos, res; - uint8_t par[1]; // 1 Byte parity is enough here - dcmd[0] = cmd; - dcmd[1] = data; + uint8_t dcmd[4] = {cmd, data, 0x00, 0x00}; + uint8_t ecmd[4] = {0x00, 0x00, 0x00, 0x00}; + uint8_t par[1] = {0x00}; // 1 Byte parity is enough here AppendCrc14443a(dcmd, 2); - memcpy(ecmd, dcmd, sizeof(dcmd)); if (crypted) { par[0] = 0; - for (pos = 0; pos < 4; pos++) - { + for (pos = 0; pos < 4; pos++) { ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos]; par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos)); } - ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing); - } else { ReaderTransmit(dcmd, sizeof(dcmd), timing); } @@ -116,45 +107,38 @@ int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, if (crypted == CRYPT_ALL) { if (len == 1) { res = 0; - for (pos = 0; pos < 4; pos++) - res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos; - - answer[0] = res; - + res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 0)) << 0; + res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 1)) << 1; + res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 2)) << 2; + res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 3)) << 3; + answer[0] = res; } else { for (pos = 0; pos < len; pos++) - { answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos]; - } } } - return len; } // mifare classic commands -int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) -{ +int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) { return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL); } -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) -{ - // variables +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) { int len; uint32_t pos; - uint8_t tmp4[4]; uint8_t par[1] = {0x00}; // "random" reader nonce: - byte_t nr[4] = {0x55, 0x41, 0x49, 0x92}; - //byte_t nr[4] = {0x01, 0x01, 0x01, 0x01}; + //byte_t nr[4] = {0x55, 0x41, 0x49, 0x92}; + byte_t nr[4] = {0x01, 0x01, 0x01, 0x01}; uint32_t nt, ntpp; // Supplied tag nonce uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }; - uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; - uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00}; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00}; // Transmit MIFARE_CLASSIC_AUTH len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing); @@ -189,18 +173,16 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN // Generate (encrypted) nr+parity by loading it into the cipher (Nr) par[0] = 0; - for (pos = 0; pos < 4; pos++) - { + for (pos = 0; pos < 4; pos++) { mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos]; par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos)); } // Skip 32 bits in pseudo random generator - nt = prng_successor(nt,32); + nt = prng_successor(nt, 32); // ar+parity - for (pos = 4; pos < 8; pos++) - { + for (pos = 4; pos < 8; pos++) { nt = prng_successor(nt,8); mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff); par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7-pos)); @@ -211,34 +193,28 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN // Receive 4 byte tag answer len = ReaderReceive(receivedAnswer, receivedAnswerPar); - if (!len) - { + if (!len) { if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout."); return 2; } - - memcpy(tmp4, receivedAnswer, 4); + ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0); - - if (ntpp != bytes_to_num(tmp4, 4)) { + + if (ntpp != bytes_to_num(receivedAnswer, 4)) { if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response."); return 3; } - return 0; } -int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) -{ - // variables +int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) { + int len; - uint8_t bt[2]; - - uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; - uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; + uint8_t bt[2] = {0x00, 0x00}; + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00}; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00}; - // command MIFARE_CLASSIC_READBLOCK - len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL); + len = mifare_sendcmd_short(pcs, 1, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL); if (len == 1) { if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); return 1; @@ -262,14 +238,15 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo // mifare ultralight commands int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){ - uint16_t len; - uint8_t resp[4]; - uint8_t respPar[1]; - uint8_t key[4] = {0x00}; + uint16_t len = 0; + uint8_t resp[4] = {0x00, 0x00, 0x00, 0x00}; + uint8_t respPar[1] = {0x00}; + uint8_t key[4] = {0x00, 0x00, 0x00, 0x00}; memcpy(key, keybytes, 4); if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]); + len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL); if (len != 4) { @@ -287,7 +264,6 @@ int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){ int mifare_ultra_auth(uint8_t *keybytes){ /// 3des2k - uint8_t random_a[8] = {1,1,1,1,1,1,1,1}; uint8_t random_b[8] = {0x00}; uint8_t enc_random_b[8] = {0x00}; @@ -296,7 +272,7 @@ int mifare_ultra_auth(uint8_t *keybytes){ uint8_t key[16] = {0x00}; memcpy(key, keybytes, 16); - uint16_t len; + uint16_t len = 0; uint8_t resp[19] = {0x00}; uint8_t respPar[3] = {0,0,0}; @@ -332,7 +308,7 @@ int mifare_ultra_auth(uint8_t *keybytes){ // encrypt out, in, length, key, iv tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b); - //len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL); + len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL); if (len != 11) { if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]); @@ -370,14 +346,12 @@ int mifare_ultra_auth(uint8_t *keybytes){ return 1; } -int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData) -{ - uint16_t len; - uint8_t bt[2]; - uint8_t receivedAnswer[MAX_FRAME_SIZE]; - uint8_t receivedAnswerPar[MAX_PARITY_SIZE]; +int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData) { + uint16_t len = 0; + uint8_t bt[2] = {0x00, 0x00}; + uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00}; + uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00}; - len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL); if (len == 1) { if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); @@ -399,17 +373,16 @@ int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData) return 0; } -int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) -{ +int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) { // variables - uint16_t len, i; + uint16_t len = 0; uint32_t pos = 0; - uint8_t par[3] = {0x00}; // enough for 18 Bytes to send + uint8_t par[3] = {0x00, 0x00, 0x00}; // enough for 18 Bytes to send byte_t res = 0; uint8_t d_block[18], d_block_enc[18]; - uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; - uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00}; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00}; // command MIFARE_CLASSIC_WRITEBLOCK len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL); @@ -423,8 +396,7 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl AppendCrc14443a(d_block, 16); // crypto - for (pos = 0; pos < 18; pos++) - { + for (pos = 0; pos < 18; pos++) { d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos]; par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007))); } @@ -435,20 +407,20 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl len = ReaderReceive(receivedAnswer, receivedAnswerPar); res = 0; - for (i = 0; i < 4; i++) - res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i; + res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 0)) << 0; + res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 1)) << 1; + res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 2)) << 2; + res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 3)) << 3; if ((len != 1) || (res != 0x0A)) { if (MF_DBGLEVEL >= 1) Dbprintf("Cmd send data2 Error: %02x", res); return 2; } - return 0; } /* // command not needed, but left for future testing -int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData) -{ +int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData) { uint16_t len; uint8_t par[3] = {0}; // enough for 18 parity bits uint8_t d_block[18] = {0x00}; @@ -479,19 +451,16 @@ int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData) } */ -int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData) -{ - uint16_t len; - uint8_t d_block[5] = {0x00}; - uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; - uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; +int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData) { + uint16_t len = 0; + uint8_t block[5] = {blockNo, 0x00, 0x00, 0x00, 0x00 }; + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00}; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00}; // command MIFARE_CLASSIC_WRITEBLOCK - d_block[0]= blockNo; - memcpy(d_block+1,blockData,4); - //AppendCrc14443a(d_block, 6); + memcpy(block+1, blockData, 4); - len = mifare_sendcmd(0xA2, d_block, sizeof(d_block), receivedAnswer, receivedAnswerPar, NULL); + len = mifare_sendcmd( MIFARE_ULC_WRITE, block, sizeof(block), receivedAnswer, receivedAnswerPar, NULL); if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK if (MF_DBGLEVEL >= MF_DBG_ERROR) @@ -501,13 +470,10 @@ int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData) return 0; } int mifare_classic_halt_ex(struct Crypto1State *pcs) { - uint16_t len; - uint8_t receivedAnswer[4]; - uint8_t receivedAnswerPar[4]; - - len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL); + uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00}; + uint16_t len = mifare_sendcmd_short(pcs, (pcs == NULL) ? CRYPT_NONE : CRYPT_ALL, 0x50, 0x00, receivedAnswer, NULL, NULL); if (len != 0) { - if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len); + if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("halt warning. response len: %x", len); return 1; } return 0; @@ -516,16 +482,12 @@ int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) { return mifare_classic_halt_ex(pcs); } -int mifare_ultra_halt() -{ - uint16_t len; - uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; - uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; - - len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL); +int mifare_ultra_halt() { + uint16_t len = 0; + uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00}; + len = mifare_sendcmd_short(NULL, CRYPT_NONE, 0x50, 0x00, receivedAnswer, NULL, NULL); if (len != 0) { - if (MF_DBGLEVEL >= MF_DBG_ERROR) - Dbprintf("halt error. response len: %x", len); + if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len); return 1; } return 0; @@ -534,16 +496,11 @@ int mifare_ultra_halt() // Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards), // plus evtl. 8 sectors with 16 blocks each (4k cards) -uint8_t NumBlocksPerSector(uint8_t sectorNo) -{ - if (sectorNo < 32) - return 4; - else - return 16; +uint8_t NumBlocksPerSector(uint8_t sectorNo) { + return (sectorNo < 32) ? 4 : 16; } -uint8_t FirstBlockOfSector(uint8_t sectorNo) -{ +uint8_t FirstBlockOfSector(uint8_t sectorNo) { if (sectorNo < 32) return sectorNo * 4; else @@ -551,7 +508,6 @@ uint8_t FirstBlockOfSector(uint8_t sectorNo) } - // work with emulator memory void emlSetMem(uint8_t *data, int blockNum, int blocksCount) { emlSetMem_xt(data, blockNum, blocksCount, 16); @@ -591,9 +547,8 @@ int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) { uint8_t* emCARD = BigBuf_get_EM_addr(); uint8_t* data = emCARD + blockNum * 16; - if (emlCheckValBl(blockNum)) { + if (emlCheckValBl(blockNum)) return 1; - } memcpy(blReg, data, 4); *blBlock = data[12]; @@ -618,7 +573,7 @@ int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) { } uint64_t emlGetKey(int sectorNum, int keyType) { - uint8_t key[6]; + uint8_t key[6] = {0x00}; uint8_t* emCARD = BigBuf_get_EM_addr(); memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6); @@ -635,9 +590,8 @@ void emlClearMem(void) { memset(emCARD, 0, CARD_MEMORY_SIZE); // fill sectors trailer data - for(b = 3; b < 256; b<127?(b+=4):(b+=16)) { + for(b = 3; b < 256; b<127?(b+=4):(b+=16)) emlSetMem((uint8_t *)trailer, b , 1); - } // uid emlSetMem((uint8_t *)uid, 0, 1); @@ -648,9 +602,7 @@ void emlClearMem(void) { // Mifare desfire commands 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) { - uint8_t dcmd[5] = {0x00}; - dcmd[0] = cmd; - memcpy(dcmd+1,data,2); + uint8_t dcmd[5] = {cmd, data[0], data[1], 0x00, 0x00}; AppendCrc14443a(dcmd, 3); ReaderTransmit(dcmd, sizeof(dcmd), NULL); @@ -685,8 +637,8 @@ int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){ int len; // load key, keynumber uint8_t data[2]={0x0a, 0x00}; - uint8_t receivedAnswer[MAX_FRAME_SIZE]; - uint8_t receivedAnswerPar[MAX_PARITY_SIZE]; + uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00}; + uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00}; len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL); if (len == 1) { @@ -715,8 +667,8 @@ int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){ data[0] = 0xAF; memcpy(data+1,key,16); - uint8_t receivedAnswer[MAX_FRAME_SIZE]; - uint8_t receivedAnswerPar[MAX_PARITY_SIZE]; + uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00}; + uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00}; len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);