X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/f8ada309e9e521b0e57f67fad111ae1500b660f4..aaa1a9a2dcb8b9f2b6acd937f84464daa50ecad6:/armsrc/mifareutil.c diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c index f155a92d..0a057d65 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; @@ -49,20 +49,18 @@ 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) + 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; } @@ -78,7 +76,6 @@ int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answe if(!len) { if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("%02X Cmd failed. Card timeout.", cmd); len = ReaderReceive(answer,answer_parity); - //return 0; } return len; } @@ -86,9 +83,10 @@ int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answe // 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]; + uint8_t dcmd[4] = {0x00}; + uint8_t ecmd[4] = {0x00}; uint16_t pos, res; - uint8_t par[1]; // 1 Byte parity is enough here + uint8_t par[1] = {0x00}; // 1 Byte parity is enough here dcmd[0] = cmd; dcmd[1] = data; AppendCrc14443a(dcmd, 2); @@ -97,8 +95,7 @@ int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, 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)); } @@ -116,16 +113,15 @@ 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; - + 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]; - } } } @@ -143,26 +139,23 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN // variables int len; uint32_t pos; - uint8_t tmp4[4]; uint8_t par[1] = {0x00}; - byte_t nr[4]; + + // "random" reader nonce: + //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); if (MF_DBGLEVEL >= 4) Dbprintf("rand tag nonce len: %x", len); if (len != 4) return 1; - // "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); @@ -191,8 +184,7 @@ 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)); } @@ -201,8 +193,7 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN 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)); @@ -213,20 +204,17 @@ 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; } @@ -234,10 +222,10 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo { // variables int len; - uint8_t bt[2]; + uint8_t bt[2] = {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}; // command MIFARE_CLASSIC_READBLOCK len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL); @@ -265,13 +253,14 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){ uint16_t len; - uint8_t resp[4]; - uint8_t respPar[1]; + uint8_t resp[4] = {0x00}; + uint8_t respPar[1] = {0x00}; uint8_t key[4] = {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) { @@ -375,11 +364,10 @@ int mifare_ultra_auth(uint8_t *keybytes){ 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]; + uint8_t bt[2] = {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]); @@ -404,14 +392,14 @@ int mifare_ultra_readblock(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; uint32_t pos = 0; uint8_t par[3] = {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); @@ -425,8 +413,7 @@ 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))); } @@ -437,8 +424,10 @@ 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); @@ -485,8 +474,8 @@ 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]; + uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00}; + uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00}; // command MIFARE_CLASSIC_WRITEBLOCK d_block[0]= blockNo; @@ -504,8 +493,8 @@ int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData) } int mifare_classic_halt_ex(struct Crypto1State *pcs) { uint16_t len; - uint8_t receivedAnswer[4]; - uint8_t receivedAnswerPar[4]; + uint8_t receivedAnswer[4] = {0x00}; + uint8_t receivedAnswerPar[4] = {0x00}; len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL); if (len != 0) { @@ -521,8 +510,8 @@ int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) { int mifare_ultra_halt() { uint16_t len; - 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}; len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL); if (len != 0) { @@ -540,8 +529,7 @@ uint8_t NumBlocksPerSector(uint8_t sectorNo) { if (sectorNo < 32) return 4; - else - return 16; + return 16; } uint8_t FirstBlockOfSector(uint8_t sectorNo) @@ -553,7 +541,6 @@ 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); @@ -593,9 +580,8 @@ 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]; @@ -620,7 +606,7 @@ 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); @@ -637,9 +623,8 @@ 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); @@ -687,8 +672,8 @@ 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) { @@ -717,8 +702,8 @@ 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);