X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/ca4714cd23338a762c45839d1b3010988b7612a7..6a1f2d82bb7d33cd49f9c191f36144ca10d5b629:/armsrc/mifareutil.c diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c index 0b93db8f..5122d0ec 100644 --- a/armsrc/mifareutil.c +++ b/armsrc/mifareutil.c @@ -22,17 +22,14 @@ int MF_DBGLEVEL = MF_DBG_ALL; // memory management -uint8_t* mifare_get_bigbufptr(void) { - return (((uint8_t *)BigBuf) + MIFARE_BUFF_OFFSET); // was 3560 - tied to other size changes +uint8_t* get_bigbufptr_recvrespbuf(void) { + return (((uint8_t *)BigBuf) + RECV_RESP_OFFSET); } -uint8_t* eml_get_bigbufptr_sendbuf(void) { +uint8_t* get_bigbufptr_recvcmdbuf(void) { return (((uint8_t *)BigBuf) + RECV_CMD_OFFSET); } -uint8_t* eml_get_bigbufptr_recbuf(void) { - return (((uint8_t *)BigBuf) + MIFARE_BUFF_OFFSET); -} -uint8_t* eml_get_bigbufptr_cardmem(void) { - return (((uint8_t *)BigBuf) + CARD_MEMORY); +uint8_t* get_bigbufptr_emlcardmem(void) { + return (((uint8_t *)BigBuf) + CARD_MEMORY_OFFSET); } // crypto1 helpers @@ -53,15 +50,15 @@ void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){ return; } -void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, int len, uint32_t *par) { +void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) { uint8_t bt = 0; int i; - uint32_t mltpl = 1 << (len - 1); // for len=18 it=0x20000 - *par = 0; + par[0] = 0; for (i = 0; i < len; i++) { bt = data[i]; data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i]; - *par = (*par >> 1) | ( ((filter(pcs->odd) ^ oddparity(bt)) & 0x01) * mltpl ); + if((i&0x0007) == 0) par[i>>3] = 0; + par[i>>3] |= (((filter(pcs->odd) ^ oddparity(bt)) & 0x01)<<(7-(i&0x0007))); } return; } @@ -77,18 +74,18 @@ uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) { } // send commands -int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint32_t *timing) +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, timing); + return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, answer_parity, timing); } -int mifare_sendcmd_short_special(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer, uint8_t *timing) +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[8];//, ecmd[4]; - //uint32_t par=0; + uint8_t dcmd[8];//, ecmd[4]; + //uint32_t par=0; - dcmd[0] = cmd; - dcmd[1] = data[0]; + dcmd[0] = cmd; + dcmd[1] = data[0]; dcmd[2] = data[1]; dcmd[3] = data[2]; dcmd[4] = data[3]; @@ -99,7 +96,7 @@ int mifare_sendcmd_short_special(struct Crypto1State *pcs, uint8_t crypted, uint //memcpy(ecmd, dcmd, sizeof(dcmd)); ReaderTransmit(dcmd, sizeof(dcmd), NULL); - int len = ReaderReceive(answer); + int len = ReaderReceive(answer, answer_parity); if(!len) { if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout."); @@ -108,11 +105,11 @@ int mifare_sendcmd_short_special(struct Crypto1State *pcs, uint8_t crypted, uint return len; } -int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint32_t * parptr, uint32_t *timing) +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]; - uint32_t pos, par, res; - + uint16_t pos, res; + uint8_t par[1]; // 1 Byte parity is enough here dcmd[0] = cmd; dcmd[1] = data; AppendCrc14443a(dcmd, 2); @@ -120,11 +117,11 @@ 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, timing); @@ -133,10 +130,10 @@ int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cm 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; @@ -157,33 +154,35 @@ int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cm } // mifare commands -int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint64_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, uint64_t isNested, uint32_t * ntptr, uint32_t *timing) +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] = {0}; + 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 = get_bigbufptr_recvrespbuf(); + uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE; + // Transmit MIFARE_CLASSIC_AUTH - len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, timing); - 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); @@ -211,12 +210,13 @@ 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 @@ -227,14 +227,14 @@ 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, 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."); @@ -258,10 +258,11 @@ 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 = get_bigbufptr_recvrespbuf(); + uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE; // command MIFARE_CLASSIC_READBLOCK - len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, NULL); + 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; @@ -285,13 +286,14 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo int mifare_ultra_readblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData) { // variables - int len; + uint16_t len; uint8_t bt[2]; - uint8_t* receivedAnswer = mifare_get_bigbufptr(); + uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf(); + uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE; // command MIFARE_CLASSIC_READBLOCK - len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer,NULL); + len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL); if (len == 1) { if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]); return 1; @@ -318,14 +320,15 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl // variables int 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 = get_bigbufptr_recvrespbuf(); + uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE; // command MIFARE_CLASSIC_WRITEBLOCK - len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, NULL); + 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]); @@ -336,17 +339,16 @@ 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, NULL); // Receive the response - len = ReaderReceive(receivedAnswer); + len = ReaderReceive(receivedAnswer, receivedAnswerPar); res = 0; for (i = 0; i < 4; i++) @@ -362,72 +364,74 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl int mifare_ultra_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData) { - // variables - int len; - uint32_t par = 0; + // variables + uint16_t len; + uint8_t par[3] = {0}; // enough for 18 parity bits - uint8_t d_block[18]; - uint8_t* receivedAnswer = mifare_get_bigbufptr(); + uint8_t d_block[18]; + uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf(); + uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE; - // command MIFARE_CLASSIC_WRITEBLOCK - len = mifare_sendcmd_short(NULL, 1, 0xA0, blockNo, receivedAnswer,NULL); + // 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 >= 1) Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]); - return 1; - } + if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK + if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]); + return 1; + } memset(d_block,'\0',18); memcpy(d_block, blockData, 16); - AppendCrc14443a(d_block, 16); + AppendCrc14443a(d_block, 16); ReaderTransmitPar(d_block, sizeof(d_block), par, NULL); - // Receive the response - len = ReaderReceive(receivedAnswer); + // Receive the response + len = ReaderReceive(receivedAnswer, receivedAnswerPar); if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK - if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len); - return 2; - } + if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len); + return 2; + } - return 0; + return 0; } int mifare_ultra_special_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData) { - // variables - int len; - //uint32_t par = 0; + uint16_t len; - uint8_t d_block[8]; - uint8_t* receivedAnswer = mifare_get_bigbufptr(); + uint8_t d_block[8]; + uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf(); + uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE; - // command MIFARE_CLASSIC_WRITEBLOCK + // command MIFARE_CLASSIC_WRITEBLOCK memset(d_block,'\0',8); d_block[0]= blockNo; memcpy(d_block+1,blockData,4); AppendCrc14443a(d_block, 6); //i know the data send here is correct - len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer,NULL); + len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer, receivedAnswerPar, NULL); - if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK - if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len); - return 1; - } - return 0; + if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK + if (MF_DBGLEVEL >= 1) 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; + uint16_t len; // Mifare HALT - uint8_t* receivedAnswer = mifare_get_bigbufptr(); + uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf(); + uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE; - len = mifare_sendcmd_short(pcs, pcs == NULL ? 0:1, 0x50, 0x00, receivedAnswer, NULL); + 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); return 1; @@ -438,13 +442,13 @@ int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) int mifare_ultra_halt(uint32_t uid) { - // variables - int len; + uint16_t len; // Mifare HALT - uint8_t* receivedAnswer = mifare_get_bigbufptr(); + uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf(); + uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE; - len = mifare_sendcmd_short(NULL, 1, 0x50, 0x00, receivedAnswer, NULL); + len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL); if (len != 0) { if (MF_DBGLEVEL >= 1) Dbprintf("halt error. response len: %x", len); return 1; @@ -476,25 +480,25 @@ uint8_t FirstBlockOfSector(uint8_t sectorNo) // work with emulator memory void emlSetMem(uint8_t *data, int blockNum, int blocksCount) { - uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + uint8_t* emCARD = get_bigbufptr_emlcardmem(); memcpy(emCARD + blockNum * 16, data, blocksCount * 16); } void emlGetMem(uint8_t *data, int blockNum, int blocksCount) { - uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + uint8_t* emCARD = get_bigbufptr_emlcardmem(); memcpy(data, emCARD + blockNum * 16, blocksCount * 16); } void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) { - uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + uint8_t* emCARD = get_bigbufptr_emlcardmem(); memcpy(data, emCARD + bytePtr, byteCount); } int emlCheckValBl(int blockNum) { - uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + uint8_t* emCARD = get_bigbufptr_emlcardmem(); uint8_t* data = emCARD + blockNum * 16; if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) || @@ -509,7 +513,7 @@ int emlCheckValBl(int blockNum) { } int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) { - uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + uint8_t* emCARD = get_bigbufptr_emlcardmem(); uint8_t* data = emCARD + blockNum * 16; if (emlCheckValBl(blockNum)) { @@ -523,7 +527,7 @@ int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) { } int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) { - uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + uint8_t* emCARD = get_bigbufptr_emlcardmem(); uint8_t* data = emCARD + blockNum * 16; memcpy(data + 0, &blReg, 4); @@ -541,7 +545,7 @@ int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) { uint64_t emlGetKey(int sectorNum, int keyType) { uint8_t key[6]; - uint8_t* emCARD = eml_get_bigbufptr_cardmem(); + uint8_t* emCARD = get_bigbufptr_emlcardmem(); memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6); return bytes_to_num(key, 6); @@ -552,9 +556,9 @@ void emlClearMem(void) { 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 = eml_get_bigbufptr_cardmem(); + uint8_t* emCARD = get_bigbufptr_emlcardmem(); - memset(emCARD, 0, CARD_MEMORY_LEN); + memset(emCARD, 0, CARD_MEMORY_SIZE); // fill sectors trailer data for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {