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704 lines
24 KiB
C
704 lines
24 KiB
C
//-----------------------------------------------------------------------------
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// Merlok, May 2011, 2012
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// Many authors, whom made it possible
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Work with mifare cards.
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//-----------------------------------------------------------------------------
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#include "mifareutil.h"
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int MF_DBGLEVEL = MF_DBG_ERROR;
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// crypto1 helpers
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void mf_crypto1_decryptEx(struct Crypto1State *pcs, uint8_t *data_in, int len, uint8_t *data_out) {
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if (len != 1) {
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for (int i = 0; i < len; i++)
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data_out[i] = crypto1_byte(pcs, 0x00, 0) ^ data_in[i];
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} else {
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uint8_t bt = 0;
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bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], 0)) << 0;
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bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], 1)) << 1;
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bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], 2)) << 2;
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bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], 3)) << 3;
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data_out[0] = bt;
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}
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return;
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}
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void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len) {
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mf_crypto1_decryptEx(pcs, data, len, data);
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}
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void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
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mf_crypto1_encryptEx(pcs, data, NULL, data, len, par);
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}
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void mf_crypto1_encryptEx(struct Crypto1State *pcs, uint8_t *data_in, uint8_t *keystream, uint8_t *data_out, uint16_t len, uint8_t *par) {
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int i;
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par[0] = 0;
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for (i = 0; i < len; i++) {
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uint8_t bt = data_in[i];
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data_out[i] = crypto1_byte(pcs, keystream ? keystream[i] : 0x00, 0) ^ data_in[i];
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if ((i & 0x0007) == 0)
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par[ i >> 3 ] = 0;
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par[ i >> 3 ] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01) << (7 - (i & 0x0007)));
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}
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}
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uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
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uint8_t bt = 0;
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bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 0)) << 0;
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bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 1)) << 1;
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bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 2)) << 2;
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bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 3)) << 3;
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return bt;
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}
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// send X byte basic commands
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int mifare_sendcmd(uint8_t cmd, uint8_t *data, uint8_t data_size, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing) {
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uint8_t dcmd[data_size + 3];
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dcmd[0] = cmd;
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memcpy(dcmd + 1, data, data_size);
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AddCrc14A(dcmd, data_size + 1);
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ReaderTransmit(dcmd, sizeof(dcmd), timing);
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int len = ReaderReceive(answer, answer_parity);
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if (!len) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("%02X Cmd failed. Card timeout.", cmd);
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len = ReaderReceive(answer, answer_parity);
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}
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return len;
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}
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// send 2 byte commands
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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) {
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uint16_t pos;
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uint8_t dcmd[4] = {cmd, data, 0x00, 0x00};
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uint8_t ecmd[4] = {0x00, 0x00, 0x00, 0x00};
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uint8_t par[1] = {0x00}; // 1 Byte parity is enough here
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AddCrc14A(dcmd, 2);
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memcpy(ecmd, dcmd, sizeof(dcmd));
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if (crypted) {
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par[0] = 0;
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for (pos = 0; pos < 4; pos++) {
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ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
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par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7 - pos));
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}
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ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
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} else {
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ReaderTransmit(dcmd, sizeof(dcmd), timing);
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}
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int len = ReaderReceive(answer, par);
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if (answer_parity) *answer_parity = par[0];
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if (crypted == CRYPT_ALL) {
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if (len == 1) {
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uint16_t res = 0;
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res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 0)) << 0;
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res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 1)) << 1;
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res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 2)) << 2;
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res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 3)) << 3;
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answer[0] = res;
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} else {
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for (pos = 0; pos < len; pos++)
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answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
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}
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}
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return len;
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}
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// mifare classic commands
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int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) {
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return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
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}
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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) {
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int len;
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uint32_t pos, nt, ntpp; // Supplied tag nonce
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uint8_t par[1] = {0x00};
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uint8_t nr[4];
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uint8_t mf_nr_ar[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
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uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
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uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
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// "random" reader nonce:
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num_to_bytes(prng_successor(GetTickCount(), 32), 4, nr);
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// Transmit MIFARE_CLASSIC_AUTH
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len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);
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if (len != 4) return 1;
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// Save the tag nonce (nt)
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nt = bytes_to_num(receivedAnswer, 4);
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// ----------------------------- crypto1 create
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if (isNested)
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crypto1_destroy(pcs);
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// Init cipher with key
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crypto1_create(pcs, ui64Key);
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if (isNested == AUTH_NESTED) {
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// decrypt nt with help of new key
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nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
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} else {
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// Load (plain) uid^nt into the cipher
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crypto1_word(pcs, nt ^ uid, 0);
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}
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// some statistic
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if (!ntptr && (MF_DBGLEVEL >= MF_DBG_EXTENDED))
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Dbprintf("auth uid: %08x | nr: %08x | nt: %08x", uid, nr, nt);
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// save Nt
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if (ntptr)
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*ntptr = nt;
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// Generate (encrypted) nr+parity by loading it into the cipher (Nr)
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par[0] = 0;
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for (pos = 0; pos < 4; pos++) {
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mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
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par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7 - pos));
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}
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// Skip 32 bits in pseudo random generator
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nt = prng_successor(nt, 32);
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// ar+parity
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for (pos = 4; pos < 8; pos++) {
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nt = prng_successor(nt, 8);
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mf_nr_ar[pos] = crypto1_byte(pcs, 0x00, 0) ^ (nt & 0xff);
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par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7 - pos));
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}
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// Transmit reader nonce and reader answer
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ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
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// Receive 4 byte tag answer
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len = ReaderReceive(receivedAnswer, receivedAnswerPar);
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if (!len) {
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if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication failed. Card timeout.");
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return 2;
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}
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ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0, 0);
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if (ntpp != bytes_to_num(receivedAnswer, 4)) {
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if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Authentication failed. Error card response.");
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return 3;
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}
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return 0;
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}
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int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {
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int len;
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uint8_t bt[2] = {0x00, 0x00};
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uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
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uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
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len = mifare_sendcmd_short(pcs, 1, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);
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if (len == 1) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
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return 1;
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}
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if (len != 18) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: wrong response len: %x (expected 18)", len);
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return 2;
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}
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memcpy(bt, receivedAnswer + 16, 2);
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AddCrc14A(receivedAnswer, 16);
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if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
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if (MF_DBGLEVEL >= MF_DBG_INFO) Dbprintf("Cmd CRC response error.");
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return 3;
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}
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memcpy(blockData, receivedAnswer, 16);
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return 0;
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}
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// mifare ultralight commands
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int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack) {
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uint16_t len = 0;
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uint8_t resp[4] = {0x00, 0x00, 0x00, 0x00};
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uint8_t respPar[1] = {0x00};
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uint8_t key[4] = {0x00, 0x00, 0x00, 0x00};
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memcpy(key, keybytes, 4);
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if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
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Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
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len = mifare_sendcmd(MIFARE_ULEV1_AUTH, key, sizeof(key), resp, respPar, NULL);
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if (len != 4) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
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return 0;
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}
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if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
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Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0], resp[1], resp[2], resp[3]);
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memcpy(pack, resp, 4);
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return 1;
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}
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int mifare_ultra_auth(uint8_t *keybytes) {
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/// 3des2k
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uint8_t random_a[8] = {1, 1, 1, 1, 1, 1, 1, 1};
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uint8_t random_b[8] = {0x00};
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uint8_t enc_random_b[8] = {0x00};
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uint8_t rnd_ab[16] = {0x00};
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uint8_t IV[8] = {0x00};
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uint8_t key[16] = {0x00};
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memcpy(key, keybytes, 16);
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uint16_t len = 0;
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uint8_t resp[19] = {0x00};
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uint8_t respPar[3] = {0, 0, 0};
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// REQUEST AUTHENTICATION
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len = mifare_sendcmd_short(NULL, 1, MIFARE_ULC_AUTH_1, 0x00, resp, respPar, NULL);
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if (len != 11) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
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return 0;
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}
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// tag nonce.
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memcpy(enc_random_b, resp + 1, 8);
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// decrypt nonce.
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tdes_2key_dec((void *)random_b, (void *)enc_random_b, sizeof(random_b), (const void *)key, IV);
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rol(random_b, 8);
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memcpy(rnd_ab, random_a, 8);
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memcpy(rnd_ab + 8, random_b, 8);
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if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
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Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
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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]);
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Dbprintf(" B: %02x %02x %02x %02x %02x %02x %02x %02x",
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random_b[0], random_b[1], random_b[2], random_b[3], random_b[4], random_b[5], random_b[6], random_b[7]);
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Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
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rnd_ab[0], rnd_ab[1], rnd_ab[2], rnd_ab[3], rnd_ab[4], rnd_ab[5], rnd_ab[6], rnd_ab[7]);
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Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
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rnd_ab[8], rnd_ab[9], rnd_ab[10], rnd_ab[11], rnd_ab[12], rnd_ab[13], rnd_ab[14], rnd_ab[15]);
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}
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// encrypt out, in, length, key, iv
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tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
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len = mifare_sendcmd(MIFARE_ULC_AUTH_2, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
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if (len != 11) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
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return 0;
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}
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uint8_t enc_resp[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
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uint8_t resp_random_a[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
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memcpy(enc_resp, resp + 1, 8);
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// decrypt out, in, length, key, iv
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tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
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if (memcmp(resp_random_a, random_a, 8) != 0) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
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return 0;
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}
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if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
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Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
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rnd_ab[0], rnd_ab[1], rnd_ab[2], rnd_ab[3],
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rnd_ab[4], rnd_ab[5], rnd_ab[6], rnd_ab[7]);
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Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
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rnd_ab[8], rnd_ab[9], rnd_ab[10], rnd_ab[11],
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rnd_ab[12], rnd_ab[13], rnd_ab[14], rnd_ab[15]);
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Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
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random_a[0], random_a[1], random_a[2], random_a[3],
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random_a[4], random_a[5], random_a[6], random_a[7]);
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Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
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resp_random_a[0], resp_random_a[1], resp_random_a[2], resp_random_a[3],
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resp_random_a[4], resp_random_a[5], resp_random_a[6], resp_random_a[7]);
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}
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return 1;
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}
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int mifare_ultra_readblockEx(uint8_t blockNo, uint8_t *blockData) {
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uint16_t len = 0;
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uint8_t bt[2] = {0x00, 0x00};
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uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
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uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
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len = mifare_sendcmd_short(NULL, 1, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);
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if (len == 1) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
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return 1;
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}
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if (len != 18) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
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return 2;
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}
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memcpy(bt, receivedAnswer + 16, 2);
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AddCrc14A(receivedAnswer, 16);
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if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
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return 3;
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}
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memcpy(blockData, receivedAnswer, 14);
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return 0;
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}
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int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData) {
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#define MFU_MAX_RETRIES 5
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uint8_t res;
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for (uint8_t retries = 0; retries < MFU_MAX_RETRIES; ++retries) {
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res = mifare_ultra_readblockEx(blockNo, blockData);
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// break if OK, or NACK.
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switch (res) {
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case 0:
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case 1:
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return res;
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default:
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continue;
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}
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}
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return res;
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}
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int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {
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// variables
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uint16_t len = 0;
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uint32_t pos = 0;
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uint8_t par[3] = {0x00, 0x00, 0x00}; // enough for 18 Bytes to send
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uint8_t res = 0;
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uint8_t d_block[18], d_block_enc[18];
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uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
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uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
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// command MIFARE_CLASSIC_WRITEBLOCK
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len = mifare_sendcmd_short(pcs, 1, ISO14443A_CMD_WRITEBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);
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|
|
|
if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
|
|
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
|
|
return 1;
|
|
}
|
|
|
|
memcpy(d_block, blockData, 16);
|
|
AddCrc14A(d_block, 16);
|
|
|
|
// crypto
|
|
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)));
|
|
}
|
|
|
|
ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
|
|
|
|
// Receive the response
|
|
len = ReaderReceive(receivedAnswer, receivedAnswerPar);
|
|
|
|
res = 0;
|
|
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 >= MF_DBG_ERROR) 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) {
|
|
uint16_t len;
|
|
uint8_t par[3] = {0}; // enough for 18 parity bits
|
|
uint8_t d_block[18] = {0x00};
|
|
uint8_t receivedAnswer[MAX_FRAME_SIZE];
|
|
uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
|
|
|
|
len = mifare_sendcmd_short(NULL, true, ISO14443A_CMD_WRITEBLOCK, 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);
|
|
AddCrc14A(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_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
|
|
memcpy(block + 1, blockData, 4);
|
|
|
|
len = mifare_sendcmd(MIFARE_ULC_WRITE, block, sizeof(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_ex(struct Crypto1State *pcs) {
|
|
uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};
|
|
uint16_t len = mifare_sendcmd_short(pcs, (pcs == NULL) ? CRYPT_NONE : CRYPT_ALL, ISO14443A_CMD_HALT, 0x00, receivedAnswer, NULL, NULL);
|
|
if (len != 0) {
|
|
if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("halt warning. response len: %x", len);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) {
|
|
return mifare_classic_halt_ex(pcs);
|
|
}
|
|
|
|
int mifare_ultra_halt() {
|
|
uint16_t len = 0;
|
|
uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};
|
|
len = mifare_sendcmd_short(NULL, CRYPT_NONE, ISO14443A_CMD_HALT, 0x00, receivedAnswer, NULL, NULL);
|
|
if (len != 0) {
|
|
if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("halt warning. 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) {
|
|
return (sectorNo < 32) ? 4 : 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) {
|
|
emlSetMem_xt(data, blockNum, blocksCount, 16);
|
|
}
|
|
|
|
void emlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {
|
|
uint8_t *emCARD = BigBuf_get_EM_addr();
|
|
memcpy(emCARD + blockNum * blockBtWidth, data, blocksCount * blockBtWidth);
|
|
}
|
|
|
|
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] = {0x00};
|
|
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) {
|
|
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 (uint16_t b = 3; b <= MIFARE_4K_MAXBLOCK; ((b <= MIFARE_2K_MAXBLOCK) ? (b += 4) : (b += 16)))
|
|
emlSetMem((uint8_t *)trailer, b, 1);
|
|
|
|
// uid
|
|
emlSetMem((uint8_t *)uid, 0, 1);
|
|
return;
|
|
}
|
|
|
|
uint8_t SectorTrailer(uint8_t blockNo) {
|
|
if (blockNo <= MIFARE_2K_MAXBLOCK) {
|
|
if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Sector Trailer for block %d : %d", blockNo, (blockNo | 0x03));
|
|
return (blockNo | 0x03);
|
|
} else {
|
|
if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Sector Trailer for block %d : %d", blockNo, (blockNo | 0x0f));
|
|
return (blockNo | 0x0f);
|
|
}
|
|
}
|
|
|
|
bool IsSectorTrailer(uint8_t blockNo) {
|
|
return (blockNo == SectorTrailer(blockNo));
|
|
}
|
|
|
|
// 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] = {cmd, data[0], data[1], 0x00, 0x00};
|
|
AddCrc14A(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);
|
|
AddCrc14A(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] = {MFDES_AUTHENTICATE, 0x00};
|
|
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) {
|
|
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] = {MFDES_AUTHENTICATION_FRAME};
|
|
memcpy(data + 1, key, 16);
|
|
|
|
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);
|
|
|
|
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;
|
|
}
|