#include "util.h"\r
#include "crc.h"\r
#include "protocols.h"\r
+#include "parity.h"\r
\r
//-----------------------------------------------------------------------------\r
// Select, Authenticate, Read a MIFARE tag. \r
LED_C_OFF();\r
\r
while (true) {\r
- if(!iso14443a_select_card(uid, NULL, &cuid)) {\r
+ if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {\r
if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");\r
break;\r
};\r
\r
clear_trace();\r
\r
- if(!iso14443a_select_card(NULL, NULL, NULL)) {\r
+ if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");\r
OnError(0);\r
return;\r
\r
clear_trace();\r
\r
- int len = iso14443a_select_card(NULL, NULL, NULL);\r
+ int len = iso14443a_select_card(NULL, NULL, NULL, true, 0);\r
if(!len) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%02X)",len);\r
OnError(1);\r
LED_C_OFF();\r
\r
isOK = 1;\r
- if(!iso14443a_select_card(uid, NULL, &cuid)) {\r
+ if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {\r
isOK = 0;\r
if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");\r
}\r
return;\r
}\r
\r
- int len = iso14443a_select_card(NULL, NULL, NULL);\r
+ int len = iso14443a_select_card(NULL, NULL, NULL, true, 0);\r
if (!len) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card (RC:%d)",len);\r
OnError(1);\r
LED_C_OFF();\r
\r
while (true) {\r
- if(!iso14443a_select_card(uid, NULL, &cuid)) {\r
+ if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {\r
if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");\r
break;\r
};\r
clear_trace();\r
iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);\r
\r
- if(!iso14443a_select_card(uid, NULL, NULL)) {\r
+ if(!iso14443a_select_card(uid, NULL, NULL, true, 0)) {\r
if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");\r
OnError(0);\r
return;\r
\r
clear_trace();\r
\r
- if(!iso14443a_select_card(NULL, NULL, NULL)) {\r
+ if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {\r
if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");\r
OnError(0);\r
return;\r
\r
clear_trace();\r
\r
- if(!iso14443a_select_card(NULL, NULL, NULL)) {\r
+ if(!iso14443a_select_card(NULL, NULL, NULL, true, 0)) {\r
if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");\r
OnError(0);\r
return;\r
\r
// Return 1 if the nonce is invalid else return 0\r
int valid_nonce(uint32_t Nt, uint32_t NtEnc, uint32_t Ks1, uint8_t *parity) {\r
- return ((oddparity((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \\r
- (oddparity((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \\r
- (oddparity((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;\r
+ return ((oddparity8((Nt >> 24) & 0xFF) == ((parity[0]) ^ oddparity8((NtEnc >> 24) & 0xFF) ^ BIT(Ks1,16))) & \\r
+ (oddparity8((Nt >> 16) & 0xFF) == ((parity[1]) ^ oddparity8((NtEnc >> 16) & 0xFF) ^ BIT(Ks1,8))) & \\r
+ (oddparity8((Nt >> 8) & 0xFF) == ((parity[2]) ^ oddparity8((NtEnc >> 8) & 0xFF) ^ BIT(Ks1,0)))) ? 1 : 0;\r
+}\r
+\r
+\r
+//-----------------------------------------------------------------------------\r
+// acquire encrypted nonces in order to perform the attack described in\r
+// Carlo Meijer, Roel Verdult, "Ciphertext-only Cryptanalysis on Hardened\r
+// Mifare Classic Cards" in Proceedings of the 22nd ACM SIGSAC Conference on \r
+// Computer and Communications Security, 2015\r
+//-----------------------------------------------------------------------------\r
+void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags, uint8_t *datain)\r
+{\r
+ uint64_t ui64Key = 0;\r
+ uint8_t uid[10];\r
+ uint32_t cuid;\r
+ uint8_t cascade_levels = 0;\r
+ struct Crypto1State mpcs = {0, 0};\r
+ struct Crypto1State *pcs;\r
+ pcs = &mpcs;\r
+ uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
+ int16_t isOK = 0;\r
+ uint8_t par_enc[1];\r
+ uint8_t nt_par_enc = 0;\r
+ uint8_t buf[USB_CMD_DATA_SIZE];\r
+ uint32_t timeout;\r
+ \r
+ uint8_t blockNo = arg0 & 0xff;\r
+ uint8_t keyType = (arg0 >> 8) & 0xff;\r
+ uint8_t targetBlockNo = arg1 & 0xff;\r
+ uint8_t targetKeyType = (arg1 >> 8) & 0xff;\r
+ ui64Key = bytes_to_num(datain, 6);\r
+ bool initialize = flags & 0x0001;\r
+ bool slow = flags & 0x0002;\r
+ bool field_off = flags & 0x0004;\r
+ \r
+ #define AUTHENTICATION_TIMEOUT 848 // card times out 1ms after wrong authentication (according to NXP documentation)\r
+ #define PRE_AUTHENTICATION_LEADTIME 400 // some (non standard) cards need a pause after select before they are ready for first authentication \r
+ \r
+ LED_A_ON();\r
+ LED_C_OFF();\r
+\r
+ if (initialize) {\r
+ iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);\r
+ clear_trace();\r
+ set_tracing(true);\r
+ }\r
+ \r
+ LED_C_ON();\r
+ \r
+ uint16_t num_nonces = 0;\r
+ bool have_uid = false;\r
+ for (uint16_t i = 0; i <= USB_CMD_DATA_SIZE - 9; ) {\r
+\r
+ // Test if the action was cancelled\r
+ if(BUTTON_PRESS()) {\r
+ isOK = 2;\r
+ field_off = true;\r
+ break;\r
+ }\r
+\r
+ if (!have_uid) { // 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)) {\r
+ if (MF_DBGLEVEL >= 1) Dbprintf("AcquireNonces: Can't select card (ALL)");\r
+ continue;\r
+ }\r
+ switch (card_info.uidlen) {\r
+ case 4 : cascade_levels = 1; break;\r
+ case 7 : cascade_levels = 2; break;\r
+ case 10: cascade_levels = 3; break;\r
+ default: break;\r
+ }\r
+ have_uid = true; \r
+ } else { // no need for anticollision. We can directly select the card\r
+ if(!iso14443a_select_card(uid, NULL, NULL, false, cascade_levels)) {\r
+ if (MF_DBGLEVEL >= 1) Dbprintf("AcquireNonces: Can't select card (UID)");\r
+ continue;\r
+ }\r
+ }\r
+ \r
+ if (slow) {\r
+ timeout = GetCountSspClk() + PRE_AUTHENTICATION_LEADTIME;\r
+ while(GetCountSspClk() < timeout);\r
+ }\r
+\r
+ uint32_t nt1;\r
+ if (mifare_classic_authex(pcs, cuid, blockNo, keyType, ui64Key, AUTH_FIRST, &nt1, NULL)) {\r
+ if (MF_DBGLEVEL >= 1) Dbprintf("AcquireNonces: Auth1 error");\r
+ continue;\r
+ }\r
+\r
+ // nested authentication\r
+ uint16_t len = mifare_sendcmd_short(pcs, AUTH_NESTED, 0x60 + (targetKeyType & 0x01), targetBlockNo, receivedAnswer, par_enc, NULL);\r
+ if (len != 4) {\r
+ if (MF_DBGLEVEL >= 1) Dbprintf("AcquireNonces: Auth2 error len=%d", len);\r
+ continue;\r
+ }\r
+ \r
+ // send a dummy byte as reader response in order to trigger the cards authentication timeout\r
+ uint8_t dummy_answer = 0;\r
+ ReaderTransmit(&dummy_answer, 1, NULL);\r
+ timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;\r
+ \r
+ num_nonces++;\r
+ if (num_nonces % 2) {\r
+ memcpy(buf+i, receivedAnswer, 4);\r
+ nt_par_enc = par_enc[0] & 0xf0;\r
+ } else {\r
+ nt_par_enc |= par_enc[0] >> 4;\r
+ memcpy(buf+i+4, receivedAnswer, 4);\r
+ memcpy(buf+i+8, &nt_par_enc, 1);\r
+ i += 9;\r
+ }\r
+\r
+ // wait for the card to become ready again\r
+ while(GetCountSspClk() < timeout);\r
+ \r
+ }\r
+\r
+ LED_C_OFF();\r
+ \r
+ crypto1_destroy(pcs);\r
+ \r
+ LED_B_ON();\r
+ cmd_send(CMD_ACK, isOK, cuid, num_nonces, buf, sizeof(buf));\r
+ LED_B_OFF();\r
+\r
+ if (MF_DBGLEVEL >= 3) DbpString("AcquireEncryptedNonces finished");\r
+\r
+ if (field_off) {\r
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);\r
+ LEDsoff();\r
+ }\r
}\r
\r
\r
continue;\r
}\r
\r
- if(!iso14443a_select_card(uid, NULL, &cuid)) {\r
+ if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {\r
if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Can't select card");\r
rtr--;\r
continue;\r
continue;\r
}\r
\r
- if(!iso14443a_select_card(uid, NULL, &cuid)) {\r
+ if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {\r
if (MF_DBGLEVEL >= 1) Dbprintf("Nested: Can't select card");\r
continue;\r
};\r
\r
// Parity validity check\r
for (j = 0; j < 4; j++) {\r
- par_array[j] = (oddparity(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));\r
+ par_array[j] = (oddparity8(receivedAnswer[j]) != ((par[0] >> (7-j)) & 0x01));\r
}\r
\r
ncount = 0;\r
if (MF_DBGLEVEL >= 1) Dbprintf("ChkKeys: Halt error");\r
}\r
\r
- if(!iso14443a_select_card(uid, NULL, &cuid)) {\r
+ if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {\r
if (OLD_MF_DBGLEVEL >= 1) Dbprintf("ChkKeys: Can't select card");\r
break;\r
};\r
\r
void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain){\r
FpgaDownloadAndGo(FPGA_BITSTREAM_HF);\r
- //emlSetMem(datain, arg0, arg1); // data, block num, blocks count \r
+ if (arg2==0) arg2 = 16; // backwards compat... default bytewidth\r
emlSetMem_xt(datain, arg0, arg1, arg2); // data, block num, blocks count, block byte width\r
}\r
\r
\r
bool isOK = true;\r
\r
- if(!iso14443a_select_card(uid, NULL, &cuid)) {\r
+ if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {\r
isOK = false;\r
if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");\r
}\r
\r
// read UID and return to client\r
if (workFlags & MAGIC_UID) {\r
- if(!iso14443a_select_card(uid, NULL, &cuid)) {\r
+ if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");\r
OnErrorMagic(MAGIC_UID);\r
- };\r
- };\r
+ }\r
+ }\r
\r
// wipe tag, fill it with zeros\r
if (workFlags & MAGIC_WIPE){\r
if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");\r
OnErrorMagic(MAGIC_WIPE);\r
- };\r
+ }\r
\r
ReaderTransmit(wipeC, sizeof(wipeC), NULL);\r
if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wipeC error");\r
OnErrorMagic(MAGIC_WIPE);\r
- };\r
- }; \r
+ }\r
+ } \r
\r
// write block\r
if (workFlags & MAGIC_WUPC) {\r
if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");\r
OnErrorMagic(MAGIC_WUPC);\r
- };\r
+ }\r
\r
ReaderTransmit(wupC2, sizeof(wupC2), NULL);\r
if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");\r
OnErrorMagic(MAGIC_WUPC);\r
- };\r
+ }\r
}\r
\r
if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_WRITEBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 1) || (receivedAnswer[0] != 0x0a)) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("write block send command error");\r
OnErrorMagic(4);\r
- };\r
+ }\r
\r
memcpy(data, datain, 16);\r
AppendCrc14443a(data, 16);\r
if ((ReaderReceive(receivedAnswer, receivedAnswerPar) != 1) || (receivedAnswer[0] != 0x0a)) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("write block send data error");\r
OnErrorMagic(0);\r
- }; \r
+ } \r
\r
if (workFlags & MAGIC_OFF) \r
mifare_classic_halt_ex(NULL);\r
if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC1 error");\r
OnErrorMagic(MAGIC_WUPC);\r
- };\r
+ }\r
\r
ReaderTransmit(wupC2, sizeof(wupC2), NULL);\r
if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("wupC2 error");\r
OnErrorMagic(MAGIC_WUPC);\r
- };\r
+ }\r
}\r
\r
// read block \r
if ((mifare_sendcmd_short(NULL, 0, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL) != 18)) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("read block send command error");\r
OnErrorMagic(0);\r
- };\r
+ }\r
\r
memcpy(data, receivedAnswer, sizeof(data));\r
\r
void MifareCIdent(){\r
\r
// variables\r
- byte_t isOK = 1; \r
+ bool isOK = true; \r
uint8_t receivedAnswer[1];\r
uint8_t receivedAnswerPar[1];\r
\r
ReaderTransmitBitsPar(wupC1,7,0, NULL);\r
if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {\r
- isOK = 0;\r
- };\r
+ isOK = false;\r
+ }\r
\r
ReaderTransmit(wupC2, sizeof(wupC2), NULL);\r
if(!ReaderReceive(receivedAnswer, receivedAnswerPar) || (receivedAnswer[0] != 0x0a)) {\r
- isOK = 0;\r
- };\r
+ isOK = false;\r
+ }\r
\r
// removed the if, since some magic tags misbehavies and send an answer to it.\r
mifare_classic_halt(NULL, 0);\r
iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);\r
clear_trace();\r
\r
- int len = iso14443a_select_card(uid, NULL, &cuid);\r
+ int len = iso14443a_select_card(uid, NULL, &cuid, true, 0);\r
if(!len) {\r
if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Can't select card");\r
OnError(1);\r
projects / proxmark3-svn / blobdiff