X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/9ca155ba443e8f2a9feb7640f4b461842cce9e35..e57fe796f529d3edd7d48f1fa51676e809531280:/armsrc/mifareutil.c diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c index fc95de72..c3ba1b81 100644 --- a/armsrc/mifareutil.c +++ b/armsrc/mifareutil.c @@ -1,12 +1,12 @@ //----------------------------------------------------------------------------- -// Merlok, May 2011 -// Many authors, that makes it possible +// Merlok, May 2011, 2012 +// Many authors, whom made it possible // // This code is licensed to you under the terms of the GNU GPL, version 2 or, // at your option, any later version. See the LICENSE.txt file for the text of // the license. //----------------------------------------------------------------------------- -// code for work with mifare cards. +// Work with mifare cards. //----------------------------------------------------------------------------- #include "proxmark3.h" @@ -21,20 +21,100 @@ int MF_DBGLEVEL = MF_DBG_ALL; -uint8_t* mifare_get_bigbufptr(void) { - return (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes +// crypto1 helpers +void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){ + uint8_t bt = 0; + int i; + + if (len != 1) { + 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; + + data[0] = bt; + } + return; } -int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer) +void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) { + uint8_t bt = 0; + int i; + par[0] = 0; + + 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) ^ oddparity(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; + + return bt; +} + +// send 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) { - return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, NULL); + return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, answer_parity, timing); } -int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint32_t * parptr) +int 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) { - uint8_t dcmd[4], ecmd[4]; - uint32_t pos, par, res; + uint8_t dcmd[8]; + dcmd[0] = cmd; + dcmd[1] = data[0]; + dcmd[2] = data[1]; + dcmd[3] = data[2]; + dcmd[4] = data[3]; + dcmd[5] = data[4]; + AppendCrc14443a(dcmd, 6); + ReaderTransmit(dcmd, sizeof(dcmd), NULL); + int len = ReaderReceive(answer, answer_parity); + if(!len) { + if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout."); + return 2; + } + return len; +} +int mifare_sendcmd_short_mfucauth(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[19]; + int len; + dcmd[0] = cmd; + memcpy(dcmd+1,data,16); + AppendCrc14443a(dcmd, 17); + + ReaderTransmit(dcmd, sizeof(dcmd), timing); + len = ReaderReceive(answer, answer_parity); + if(!len) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed. Card timeout."); + len = ReaderReceive(answer,answer_parity); + } + if(len==1) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("NAK - Authentication failed."); + return 1; + } + return len; +} + +int 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) +{ + uint8_t dcmd[4], ecmd[4]; + uint16_t pos, res; + uint8_t par[1]; // 1 Byte parity is enough here dcmd[0] = cmd; dcmd[1] = data; AppendCrc14443a(dcmd, 2); @@ -42,23 +122,23 @@ int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cm memcpy(ecmd, dcmd, sizeof(dcmd)); if (crypted) { - par = 0; + par[0] = 0; for (pos = 0; pos < 4; pos++) { ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos]; - par = (par >> 1) | ( ((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) * 0x08 ); + par[0] |= (((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) << (7-pos)); } - ReaderTransmitPar(ecmd, sizeof(ecmd), par); + ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing); } else { - ReaderTransmit(dcmd, sizeof(dcmd)); + ReaderTransmit(dcmd, sizeof(dcmd), timing); } - int len = ReaderReceivePar(answer, &par); + int len = ReaderReceive(answer, par); + + if (answer_parity) *answer_parity = par[0]; - if (parptr) *parptr = par; - if (crypted == CRYPT_ALL) { if (len == 1) { res = 0; @@ -78,33 +158,36 @@ int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cm return len; } -int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint64_t isNested) +// 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) { - return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL); + 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, uint64_t isNested, uint32_t * ntptr) +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 len; uint32_t pos; uint8_t tmp4[4]; - byte_t par = 0; - byte_t ar[4]; + uint8_t par[1] = {0x00}; + byte_t nr[4]; uint32_t nt, ntpp; // Supplied tag nonce uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }; - uint8_t* receivedAnswer = mifare_get_bigbufptr(); - + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; + // Transmit MIFARE_CLASSIC_AUTH - len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer); - if (MF_DBGLEVEL >= 4) Dbprintf("rand nonce len: %x", len); + len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing); + if (MF_DBGLEVEL >= 4) Dbprintf("rand tag nonce len: %x", len); if (len != 4) return 1; - ar[0] = 0x55; - ar[1] = 0x41; - ar[2] = 0x49; - ar[3] = 0x92; + // "random" reader nonce: + nr[0] = 0x55; + nr[1] = 0x41; + nr[2] = 0x49; + nr[3] = 0x92; // Save the tag nonce (nt) nt = bytes_to_num(receivedAnswer, 4); @@ -132,12 +215,12 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN if (ntptr) *ntptr = nt; - par = 0; // Generate (encrypted) nr+parity by loading it into the cipher (Nr) + par[0] = 0; for (pos = 0; pos < 4; pos++) { - mf_nr_ar[pos] = crypto1_byte(pcs, ar[pos], 0) ^ ar[pos]; - par = (par >> 1) | ( ((filter(pcs->odd) ^ oddparity(ar[pos])) & 0x01) * 0x80 ); + mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos]; + par[0] |= (((filter(pcs->odd) ^ oddparity(nr[pos])) & 0x01) << (7-pos)); } // Skip 32 bits in pseudo random generator @@ -148,14 +231,14 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN { nt = prng_successor(nt,8); mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff); - par = (par >> 1)| ( ((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) * 0x80 ); + par[0] |= (((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) << (7-pos)); } // Transmit reader nonce and reader answer - ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par); + ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL); - // Receive 4 bit answer - len = ReaderReceive(receivedAnswer); + // Receive 4 byte tag answer + len = ReaderReceive(receivedAnswer, receivedAnswerPar); if (!len) { if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout."); @@ -179,10 +262,11 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo int len; uint8_t bt[2]; - uint8_t* receivedAnswer = mifare_get_bigbufptr(); + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; // command MIFARE_CLASSIC_READBLOCK - len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer); + len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL); if (len == 1) { if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); return 1; @@ -203,19 +287,105 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo return 0; } +// mifare ultralight commands +int mifare_ultra_auth1(uint32_t uid, uint8_t *blockData){ + + uint16_t len; + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; + + len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, receivedAnswer,receivedAnswerPar ,NULL); + if (len == 1) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Cmd Error: %02x", receivedAnswer[0]); + return 1; + } + if (len != 11) + return 1; + + if (MF_DBGLEVEL >= MF_DBG_EXTENDED) { + Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", + receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4], + receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9], + receivedAnswer[10]); + } + memcpy(blockData, receivedAnswer, 11); + return 0; +} + +int mifare_ultra_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){ + + uint16_t len; + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; + + len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, key, receivedAnswer, receivedAnswerPar, NULL); + if (len == 1) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Cmd Error: %02x", receivedAnswer[0]); + return 1; + } + if (len != 11) + return 1; + + if (MF_DBGLEVEL >= MF_DBG_EXTENDED) { + Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", + receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4], + receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9], + receivedAnswer[10]); + } + memcpy(blockData, receivedAnswer, 11); + return 0; +} + +int mifare_ultra_readblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData) +{ + uint16_t len; + uint8_t bt[2]; + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; + + + // command MIFARE_CLASSIC_READBLOCK + 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]); + return 1; + } + if (len != 18) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Cmd Error: card timeout. len: %x", len); + return 2; + } + + memcpy(bt, receivedAnswer + 16, 2); + AppendCrc14443a(receivedAnswer, 16); + if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Cmd CRC response error."); + return 3; + } + + memcpy(blockData, receivedAnswer, 14); + return 0; +} + + int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) { // variables - int len, i; + uint16_t len, i; uint32_t pos; - uint32_t par = 0; + uint8_t par[3] = {0}; // enough for 18 Bytes to send byte_t res; uint8_t d_block[18], d_block_enc[18]; - uint8_t* receivedAnswer = mifare_get_bigbufptr(); + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; // command MIFARE_CLASSIC_WRITEBLOCK - len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer); + len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL); if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); @@ -226,17 +396,16 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl AppendCrc14443a(d_block, 16); // crypto - par = 0; for (pos = 0; pos < 18; pos++) { d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos]; - par = (par >> 1) | ( ((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) * 0x20000 ); + par[pos>>3] |= (((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) << (7 - (pos&0x0007))); } - ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par); + ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL); // Receive the response - len = ReaderReceive(receivedAnswer); + len = ReaderReceive(receivedAnswer, receivedAnswerPar); res = 0; for (i = 0; i < 4; i++) @@ -250,20 +419,291 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl return 0; } +int mifare_ultra_writeblock(uint32_t uid, 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}; + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; + + // command MIFARE_CLASSIC_WRITEBLOCK + len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL); + + if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]); + return 1; + } + + memcpy(d_block, blockData, 16); + AppendCrc14443a(d_block, 16); + + ReaderTransmitPar(d_block, sizeof(d_block), par, NULL); + + len = ReaderReceive(receivedAnswer, receivedAnswerPar); + + if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len); + return 2; + } + return 0; +} + +int mifare_ultra_special_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData) +{ + uint16_t len; + uint8_t d_block[8] = {0x00}; + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; + + // command MIFARE_CLASSIC_WRITEBLOCK + d_block[0]= blockNo; + memcpy(d_block+1,blockData,4); + AppendCrc14443a(d_block, 6); + + len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer, receivedAnswerPar, NULL); + + if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len); + return 1; + } + return 0; +} + int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) { - // variables - int len; - - // Mifare HALT - uint8_t* receivedAnswer = mifare_get_bigbufptr(); + uint16_t len; + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; - len = mifare_sendcmd_short(pcs, 1, 0x50, 0x00, receivedAnswer); + len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL); if (len != 0) { - if (MF_DBGLEVEL >= 1) Dbprintf("halt error. response len: %x", len); + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("halt error. response len: %x", len); return 1; } return 0; } +int mifare_ultra_halt(uint32_t uid) +{ + 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); + if (len != 0) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("halt error. response len: %x", len); + return 1; + } + return 0; +} + + +// 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 FirstBlockOfSector(uint8_t sectorNo) +{ + if (sectorNo < 32) + return sectorNo * 4; + else + return 32*4 + (sectorNo - 32) * 16; + +} + + +// work with emulator memory +void emlSetMem(uint8_t *data, int blockNum, int blocksCount) { + uint8_t* emCARD = BigBuf_get_EM_addr(); + memcpy(emCARD + blockNum * 16, data, blocksCount * 16); +} + +void emlGetMem(uint8_t *data, int blockNum, int blocksCount) { + uint8_t* emCARD = BigBuf_get_EM_addr(); + memcpy(data, emCARD + blockNum * 16, blocksCount * 16); +} + +void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) { + uint8_t* emCARD = BigBuf_get_EM_addr(); + memcpy(data, emCARD + bytePtr, byteCount); +} + +int emlCheckValBl(int blockNum) { + uint8_t* emCARD = BigBuf_get_EM_addr(); + uint8_t* data = emCARD + blockNum * 16; + + if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) || + (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) || + (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) || + (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) || + (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) || + (data[12] != (data[15] ^ 0xff)) + ) + return 1; + return 0; +} + +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)) { + return 1; + } + + memcpy(blReg, data, 4); + *blBlock = data[12]; + return 0; +} + +int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) { + uint8_t* emCARD = BigBuf_get_EM_addr(); + uint8_t* data = emCARD + blockNum * 16; + + memcpy(data + 0, &blReg, 4); + memcpy(data + 8, &blReg, 4); + blReg = blReg ^ 0xffffffff; + memcpy(data + 4, &blReg, 4); + + data[12] = blBlock; + data[13] = blBlock ^ 0xff; + data[14] = blBlock; + data[15] = blBlock ^ 0xff; + + return 0; +} + +uint64_t emlGetKey(int sectorNum, int keyType) { + uint8_t key[6]; + uint8_t* emCARD = BigBuf_get_EM_addr(); + + memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6); + return bytes_to_num(key, 6); +} + +void emlClearMem(void) { + int b; + + const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04}; + uint8_t* emCARD = BigBuf_get_EM_addr(); + + memset(emCARD, 0, CARD_MEMORY_SIZE); + + // fill sectors trailer data + for(b = 3; b < 256; b<127?(b+=4):(b+=16)) { + emlSetMem((uint8_t *)trailer, b , 1); + } + + // uid + emlSetMem((uint8_t *)uid, 0, 1); + return; +} + + +// 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); + AppendCrc14443a(dcmd, 3); + + ReaderTransmit(dcmd, sizeof(dcmd), NULL); + int len = ReaderReceive(answer, answer_parity); + if(!len) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Authentication failed. Card timeout."); + return 1; + } + return len; +} + +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) +{ + uint8_t dcmd[20] = {0x00}; + dcmd[0] = cmd; + memcpy(dcmd+1,data,17); + AppendCrc14443a(dcmd, 18); + + ReaderTransmit(dcmd, sizeof(dcmd), NULL); + int len = ReaderReceive(answer, answer_parity); + if(!len){ + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Authentication failed. Card timeout."); + return 1; + } + return len; +} + +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_MIFARE_FRAME_SIZE]; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; + + len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL); + if (len == 1) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Cmd Error: %02x", receivedAnswer[0]); + return 1; + } + + if (len == 12) { + if (MF_DBGLEVEL >= MF_DBG_EXTENDED) { + Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", + receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4], + receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9], + receivedAnswer[10],receivedAnswer[11]); + } + memcpy(blockData, receivedAnswer, 12); + return 0; + } + return 1; +} + +int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){ + + int len; + uint8_t data[17] = {0x00}; + data[0] = 0xAF; + memcpy(data+1,key,16); + + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE]; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE]; + + len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL); + + if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]); + return 1; + } + + if (len == 12){ + if (MF_DBGLEVEL >= MF_DBG_EXTENDED) { + Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", + receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4], + receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9], + receivedAnswer[10],receivedAnswer[11]); + } + memcpy(blockData, receivedAnswer, 12); + return 0; + } + return 1; +}