git.zerfleddert.de Git - proxmark3-svn/blobdiff

}\r

\r

// send X byte basic commands\r

}\r

\r

// send X byte basic commands\r

-int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)\r

-{\r

+int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing) {\r

uint8_t dcmd[data_size+3];\r

dcmd[0] = cmd;\r

memcpy(dcmd+1,data,data_size);\r

uint8_t dcmd[data_size+3];\r

dcmd[0] = cmd;\r

memcpy(dcmd+1,data,data_size);\r

}\r

\r

// send 2 byte commands\r

}\r

\r

// send 2 byte commands\r

-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)\r

-{\r

+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) {\r

uint8_t dcmd[4], ecmd[4];\r

uint16_t pos, res;\r

uint8_t par[1]; // 1 Byte parity is enough here\r

uint8_t dcmd[4], ecmd[4];\r

uint16_t pos, res;\r

uint8_t par[1]; // 1 Byte parity is enough here\r

ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];\r

par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));\r

}\r

ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];\r

par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));\r

}\r

-\r

ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);\r

-\r

} else {\r

ReaderTransmit(dcmd, sizeof(dcmd), timing);\r

}\r

} else {\r

ReaderTransmit(dcmd, sizeof(dcmd), timing);\r

}\r

return len;\r

}\r

\r

return len;\r

}\r

\r

+\r

// mifare classic commands\r

-int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested)\r

-{\r

- return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);\r

+int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested, uint32_t *auth_timeout) {\r

+\r

+ return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL, auth_timeout);\r

}\r

\r

}\r

\r

-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)\r

-{\r

- // variables\r

+\r

+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, uint32_t *auth_timeout) {\r

+\r

int len;\r

uint32_t pos;\r

int len;\r

uint32_t pos;\r

- uint8_t tmp4[4];\r

uint8_t par[1] = {0x00};\r

byte_t nr[4];\r

uint32_t nt, ntpp; // Supplied tag nonce\r

uint8_t par[1] = {0x00};\r

byte_t nr[4];\r

uint32_t nt, ntpp; // Supplied tag nonce\r

\r

// Generate (encrypted) nr+parity by loading it into the cipher (Nr)\r

par[0] = 0;\r

\r

// Generate (encrypted) nr+parity by loading it into the cipher (Nr)\r

par[0] = 0;\r

- for (pos = 0; pos < 4; pos++)\r

- {\r

+ for (pos = 0; pos < 4; pos++) {\r

mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];\r

par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));\r

}\r

mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];\r

par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));\r

}\r

nt = prng_successor(nt,32);\r

\r

// ar+parity\r

nt = prng_successor(nt,32);\r

\r

// ar+parity\r

- for (pos = 4; pos < 8; pos++)\r

- {\r

+ for (pos = 4; pos < 8; pos++) {\r

nt = prng_successor(nt,8);\r

- mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);\r

+ mf_nr_ar[pos] = crypto1_byte(pcs, 0x00, 0) ^ (nt & 0xff);\r

par[0] |= (((filter(pcs->odd) ^ oddparity8(nt)) & 0x01) << (7-pos));\r

}\r

\r

par[0] |= (((filter(pcs->odd) ^ oddparity8(nt)) & 0x01) << (7-pos));\r

}\r

\r

ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);\r

\r

// Receive 4 byte tag answer\r

ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);\r

\r

// Receive 4 byte tag answer\r

+ uint32_t save_timeout = iso14a_get_timeout(); // save standard timeout\r

+ if (auth_timeout && *auth_timeout) {\r

+ iso14a_set_timeout(*auth_timeout); // set timeout for authentication response\r

+ }\r

+ uint32_t auth_timeout_start = GetCountSspClk();\r

len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r

- if (!len)\r

- {\r

+ iso14a_set_timeout(save_timeout); // restore standard timeout\r

+ if (!len) {\r

if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");\r

return 2;\r

}\r

if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");\r

return 2;\r

}\r

+ if (auth_timeout && !*auth_timeout) { // measure time for future authentication response timeout\r

+ *auth_timeout = (GetCountSspClk() - auth_timeout_start - (len * 9 + 2) * 8) / 8 + 1;\r

+ }\r

\r

- memcpy(tmp4, receivedAnswer, 4);\r

- ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);\r

+ ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0, 0);\r

\r

- if (ntpp != bytes_to_num(tmp4, 4)) {\r

+ if (ntpp != bytes_to_num(receivedAnswer, 4)) {\r

if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response.");\r

return 3;\r

}\r

if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response.");\r

return 3;\r

}\r

return 0;\r

}\r

\r

return 0;\r

}\r

\r

-int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)\r

-{\r

+\r

+int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {\r

// variables\r

int len;\r

uint8_t bt[2];\r

// variables\r

int len;\r

uint8_t bt[2];\r

//\r

//-----------------------------------------------------------------------------\r

// one key check\r

//\r

//-----------------------------------------------------------------------------\r

// one key check\r

-int MifareChkBlockKey(uint8_t *uid, uint32_t *cuid, uint8_t *cascade_levels, uint64_t ui64Key, uint8_t blockNo, uint8_t keyType, uint8_t debugLevel) {\r

+static int MifareChkBlockKey(uint8_t *uid, uint32_t *cuid, uint8_t *cascade_levels, uint8_t *key, uint8_t blockNo, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel, bool fixed_nonce) {\r

\r

struct Crypto1State mpcs = {0, 0};\r

struct Crypto1State *pcs;\r

pcs = &mpcs;\r

\r

struct Crypto1State mpcs = {0, 0};\r

struct Crypto1State *pcs;\r

pcs = &mpcs;\r

\r

- // Iceman: use piwi's faster nonce collecting part in hardnested.\r

if (*cascade_levels == 0) { // need a full select cycle to get the uid first\r

iso14a_card_select_t card_info;\r

if (*cascade_levels == 0) { // need a full select cycle to get the uid first\r

iso14a_card_select_t card_info;\r

- if(!iso14443a_select_card(uid, &card_info, cuid, true, 0, true)) {\r

+ if (!iso14443a_select_card(uid, &card_info, cuid, true, 0, true)) {\r

if (debugLevel >= 1) Dbprintf("ChkKeys: Can't select card");\r

- return 1;\r

+ return -1;\r

}\r

switch (card_info.uidlen) {\r

case 4 : *cascade_levels = 1; break;\r

}\r

switch (card_info.uidlen) {\r

case 4 : *cascade_levels = 1; break;\r

default: break;\r

}\r

} else { // no need for anticollision. We can directly select the card\r

default: break;\r

}\r

} else { // no need for anticollision. We can directly select the card\r

- if(!iso14443a_select_card(uid, NULL, NULL, false, *cascade_levels, true)) {\r

+ if (!iso14443a_select_card(uid, NULL, NULL, false, *cascade_levels, true)) {\r

if (debugLevel >= 1) Dbprintf("ChkKeys: Can't select card (UID) lvl=%d", *cascade_levels);\r

- return 1;\r

+ return -1;\r

}\r

\r

}\r

\r

- if(mifare_classic_auth(pcs, *cuid, blockNo, keyType, ui64Key, AUTH_FIRST)) {\r

-// SpinDelayUs(AUTHENTICATION_TIMEOUT); // it not needs because mifare_classic_auth have timeout from iso14a_set_timeout()\r

- return 2;\r

+ if (!fixed_nonce) {\r

+ uint64_t ui64Key = bytes_to_num(key, 6);\r

+ if (mifare_classic_auth(pcs, *cuid, blockNo, keyType, ui64Key, AUTH_FIRST, auth_timeout)) { // authentication failed\r

+ return -2;\r

+ } else {\r

+ mifare_classic_halt(pcs, *cuid);\r

+ }\r

} else {\r

-/* // let it be here. it like halt command, but maybe it will work in some strange cases\r

- uint8_t dummy_answer = 0;\r

- ReaderTransmit(&dummy_answer, 1, NULL);\r

- int timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;\r

- // wait for the card to become ready again\r

- while(GetCountSspClk() < timeout) {};\r

-*/\r

- // it needs after success authentication\r

- mifare_classic_halt(pcs, *cuid);\r

+ uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r

+ uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r

+ // Transmit MIFARE_CLASSIC_AUTH\r

+ int len = mifare_sendcmd_short(pcs, false, keyType & 0x01 ? MIFARE_AUTH_KEYB : MIFARE_AUTH_KEYA, blockNo, receivedAnswer, receivedAnswerPar, NULL);\r

+ if (len != 4) return -2;\r

+ // Transmit encrypted reader nonce and reader answer\r

+ uint8_t mf_nr_ar[8] = NESTED_FIXED_NR_ENC;\r

+ memcpy(mf_nr_ar + 4, key, 4);\r

+ ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), key + 4, NULL);\r

+ uint32_t save_timeout = iso14a_get_timeout(); // save standard timeout\r

+ iso14a_set_timeout(*auth_timeout); // set timeout for authentication response\r

+ len = ReaderReceive(receivedAnswer, receivedAnswerPar);\r

+ iso14a_set_timeout(save_timeout); // restore standard timeout\r

+ if (!len) return -2;\r

}\r

\r

}\r

\r

- return 0;\r

+ return 0; // success\r

}\r

\r

// multi key check\r

}\r

\r

// multi key check\r

-int MifareChkBlockKeys(uint8_t *keys, uint8_t keyCount, uint8_t blockNo, uint8_t keyType, uint8_t debugLevel) {\r

+static int MifareChkBlockKeysEx(uint8_t *keys, uint8_t keyCount, uint8_t blockNo, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel, bool fixed_nonce) {\r

+\r

uint8_t uid[10];\r

uint32_t cuid = 0;\r

uint8_t cascade_levels = 0;\r

uint8_t uid[10];\r

uint32_t cuid = 0;\r

uint8_t cascade_levels = 0;\r

- uint64_t ui64Key = 0;\r

\r

int retryCount = 0;\r

for (uint8_t i = 0; i < keyCount; i++) {\r

\r

int retryCount = 0;\r

for (uint8_t i = 0; i < keyCount; i++) {\r

-\r

- // Allow button press / usb cmd to interrupt device\r

- if (BUTTON_PRESS() && !usb_poll_validate_length()) {\r

- Dbprintf("ChkKeys: Cancel operation. Exit...");\r

- return -2;\r

- }\r

-\r

- ui64Key = bytes_to_num(keys + i * 6, 6);\r

- int res = MifareChkBlockKey(uid, &cuid, &cascade_levels, ui64Key, blockNo, keyType, debugLevel);\r

-\r

- // can't select\r

- if (res == 1) {\r

+ uint8_t bytes_per_key = fixed_nonce ? 5 : 6;\r

+ int res = MifareChkBlockKey(uid, &cuid, &cascade_levels, keys + i*bytes_per_key, blockNo, keyType, auth_timeout, debugLevel, fixed_nonce);\r

+ if (res == -1) { // couldn't select\r

retryCount++;\r

if (retryCount >= 5) {\r

retryCount++;\r

if (retryCount >= 5) {\r

- Dbprintf("ChkKeys: block=%d key=%d. Can't select. Exit...", blockNo, keyType);\r

+ Dbprintf("ChkKeys: block=%d key=%d. Couldn't select. Exit...", blockNo, keyType);\r

return -1;\r

+ } else {\r

+ --i; // try the same key once again\r

+ SpinDelay(20);\r

+ // Dbprintf("ChkKeys: block=%d key=%d. Try the same key once again...", blockNo, keyType);\r

+ continue;\r

}\r

- --i; // try the same key once again\r

-\r

- SpinDelay(20);\r

-// Dbprintf("ChkKeys: block=%d key=%d. Try the same key once again...", blockNo, keyType);\r

- continue;\r

}\r

-\r

- // can't authenticate\r

- if (res == 2) {\r

+ if (res == -2) { // couldn't authenticate with this key\r

retryCount = 0;\r

- continue; // can't auth. wrong key.\r

+ continue;\r

}\r

\r

}\r

\r

- return i + 1;\r

+ return i + 1; // successful authentication\r

+\r

}\r

\r

}\r

\r

- return 0;\r

+ if (BUTTON_PRESS()) {\r

+ return -2;\r

+ }\r

+\r

+ return 0; // couldn't authenticate with any key\r

+}\r

+\r

+int MifareChkBlockKeys(uint8_t *keys, uint8_t keyCount, uint8_t blockNo, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel) {\r

+ return MifareChkBlockKeysEx(keys, keyCount, blockNo, keyType, auth_timeout, debugLevel, false);\r

}\r

\r

}\r

\r

+\r

+// fixed nonce check\r

+int MifareChkBlockKeysFixedNonce(uint8_t *ar_par, uint8_t ar_par_cnt, uint8_t blockNo, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel) {\r

+ return MifareChkBlockKeysEx(ar_par, ar_par_cnt, blockNo, keyType, auth_timeout, debugLevel, true);\r

+}\r

+\r

// multisector multikey check\r

-int MifareMultisectorChk(uint8_t *keys, uint8_t keyCount, uint8_t SectorCount, uint8_t keyType, uint8_t debugLevel, TKeyIndex *keyIndex) {\r

+int MifareMultisectorChk(uint8_t *keys, uint8_t keyCount, uint8_t SectorCount, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel, TKeyIndex *keyIndex) {\r

int res = 0;\r

\r

// int clk = GetCountSspClk();\r

int res = 0;\r

\r

// int clk = GetCountSspClk();\r

\r

int keyAB = keyType;\r

do {\r

\r

int keyAB = keyType;\r

do {\r

- res = MifareChkBlockKeys(keys, keyCount, FirstBlockOfSector(sc), keyAB & 0x01, debugLevel);\r

- if (res < 0){\r

+ res = MifareChkBlockKeys(keys, keyCount, FirstBlockOfSector(sc), keyAB & 0x01, auth_timeout, debugLevel);\r

+ if (res < 0) {\r

return res;\r

}\r

return res;\r

}\r

- if (res > 0){\r

+ if (res > 0) {\r

(*keyIndex)[keyAB & 0x01][sc] = res;\r

}\r

} while(--keyAB > 0);\r

(*keyIndex)[keyAB & 0x01][sc] = res;\r

}\r

} while(--keyAB > 0);\r

\r

// Dbprintf("%d %d", GetCountSspClk() - clk, (GetCountSspClk() - clk)/(SectorCount*keyCount*(keyType==2?2:1)));\r

\r

// Dbprintf("%d %d", GetCountSspClk() - clk, (GetCountSspClk() - clk)/(SectorCount*keyCount*(keyType==2?2:1)));\r

\r

- return 0;\r

+ return 1;\r

}\r

\r

}\r

\r