#include "mifarehost.h"\r
#include "proxmark3.h"\r
\r
+#define llx PRIx64\r
+\r
// MIFARE\r
int compar_int(const void * a, const void * b) {\r
// didn't work: (the result is truncated to 32 bits)\r
else return -1;\r
}\r
\r
-\r
-\r
// Compare 16 Bits out of cryptostate\r
int Compare16Bits(const void * a, const void * b) {\r
if ((*(uint64_t*)b & 0x00ff000000ff0000) == (*(uint64_t*)a & 0x00ff000000ff0000)) return 0;\r
else return -1;\r
}\r
\r
-\r
typedef \r
struct {\r
union {\r
struct Crypto1State *slhead;\r
uint64_t *keyhead;\r
- };\r
+ } head;\r
union {\r
struct Crypto1State *sltail;\r
uint64_t *keytail;\r
- };\r
+ } tail;\r
uint32_t len;\r
uint32_t uid;\r
uint32_t blockNo;\r
struct Crypto1State *p1;\r
StateList_t *statelist = arg;\r
\r
- statelist->slhead = lfsr_recovery32(statelist->ks1, statelist->nt ^ statelist->uid);\r
- for (p1 = statelist->slhead; *(uint64_t *)p1 != 0; p1++);\r
- statelist->len = p1 - statelist->slhead;\r
- statelist->sltail = --p1;\r
- qsort(statelist->slhead, statelist->len, sizeof(uint64_t), Compare16Bits);\r
+ statelist->head.slhead = lfsr_recovery32(statelist->ks1, statelist->nt ^ statelist->uid);\r
+ for (p1 = statelist->head.slhead; *(uint64_t *)p1 != 0; p1++);\r
+ statelist->len = p1 - statelist->head.slhead;\r
+ statelist->tail.sltail = --p1;\r
+ qsort(statelist->head.slhead, statelist->len, sizeof(uint64_t), Compare16Bits);\r
\r
- return statelist->slhead;\r
+ return statelist->head.slhead;\r
}\r
\r
-\r
-\r
-\r
int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo, uint8_t trgKeyType, uint8_t * resultKey, bool calibrate) \r
{\r
- uint16_t i, len;\r
+ uint16_t i;\r
uint32_t uid;\r
UsbCommand resp;\r
\r
- \r
StateList_t statelists[2];\r
struct Crypto1State *p1, *p2, *p3, *p4;\r
\r
memcpy(c.d.asBytes, key, 6);\r
SendCommand(&c);\r
\r
- if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
- len = resp.arg[1];\r
- if (len == 2) { \r
- memcpy(&uid, resp.d.asBytes, 4);\r
- PrintAndLog("uid:%08x len=%d trgbl=%d trgkey=%x", uid, len, (uint16_t)resp.arg[2] & 0xff, (uint16_t)resp.arg[2] >> 8);\r
- \r
- for (i = 0; i < 2; i++) {\r
- statelists[i].blockNo = resp.arg[2] & 0xff;\r
- statelists[i].keyType = (resp.arg[2] >> 8) & 0xff;\r
- statelists[i].uid = uid;\r
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {\r
+ return -1;\r
+ }\r
\r
- memcpy(&statelists[i].nt, (void *)(resp.d.asBytes + 4 + i * 8 + 0), 4);\r
- memcpy(&statelists[i].ks1, (void *)(resp.d.asBytes + 4 + i * 8 + 4), 4);\r
- }\r
- }\r
- else {\r
- PrintAndLog("Got 0 keys from proxmark."); \r
- return 1;\r
- }\r
+ if (resp.arg[0]) {\r
+ return resp.arg[0]; // error during nested\r
+ }\r
+ \r
+ memcpy(&uid, resp.d.asBytes, 4);\r
+ PrintAndLog("uid:%08x trgbl=%d trgkey=%x", uid, (uint16_t)resp.arg[2] & 0xff, (uint16_t)resp.arg[2] >> 8);\r
+ \r
+ for (i = 0; i < 2; i++) {\r
+ statelists[i].blockNo = resp.arg[2] & 0xff;\r
+ statelists[i].keyType = (resp.arg[2] >> 8) & 0xff;\r
+ statelists[i].uid = uid;\r
+ memcpy(&statelists[i].nt, (void *)(resp.d.asBytes + 4 + i * 8 + 0), 4);\r
+ memcpy(&statelists[i].ks1, (void *)(resp.d.asBytes + 4 + i * 8 + 4), 4);\r
}\r
\r
// calc keys\r
\r
// wait for threads to terminate:\r
for (i = 0; i < 2; i++) {\r
- pthread_join(thread_id[i], (void*)&statelists[i].slhead);\r
+ pthread_join(thread_id[i], (void*)&statelists[i].head.slhead);\r
}\r
\r
\r
// the first 16 Bits of the cryptostate already contain part of our key.\r
// Create the intersection of the two lists based on these 16 Bits and\r
// roll back the cryptostate\r
- p1 = p3 = statelists[0].slhead; \r
- p2 = p4 = statelists[1].slhead;\r
- while (p1 <= statelists[0].sltail && p2 <= statelists[1].sltail) {\r
+ p1 = p3 = statelists[0].head.slhead; \r
+ p2 = p4 = statelists[1].head.slhead;\r
+ while (p1 <= statelists[0].tail.sltail && p2 <= statelists[1].tail.sltail) {\r
if (Compare16Bits(p1, p2) == 0) {\r
struct Crypto1State savestate, *savep = &savestate;\r
savestate = *p1;\r
- while(Compare16Bits(p1, savep) == 0 && p1 <= statelists[0].sltail) {\r
+ while(Compare16Bits(p1, savep) == 0 && p1 <= statelists[0].tail.sltail) {\r
*p3 = *p1;\r
lfsr_rollback_word(p3, statelists[0].nt ^ statelists[0].uid, 0);\r
p3++;\r
p1++;\r
}\r
savestate = *p2;\r
- while(Compare16Bits(p2, savep) == 0 && p2 <= statelists[1].sltail) {\r
+ while(Compare16Bits(p2, savep) == 0 && p2 <= statelists[1].tail.sltail) {\r
*p4 = *p2;\r
lfsr_rollback_word(p4, statelists[1].nt ^ statelists[1].uid, 0);\r
p4++;\r
}\r
p3->even = 0; p3->odd = 0;\r
p4->even = 0; p4->odd = 0;\r
- statelists[0].len = p3 - statelists[0].slhead;\r
- statelists[1].len = p4 - statelists[1].slhead;\r
- statelists[0].sltail=--p3;\r
- statelists[1].sltail=--p4;\r
+ statelists[0].len = p3 - statelists[0].head.slhead;\r
+ statelists[1].len = p4 - statelists[1].head.slhead;\r
+ statelists[0].tail.sltail=--p3;\r
+ statelists[1].tail.sltail=--p4;\r
\r
// the statelists now contain possible keys. The key we are searching for must be in the\r
// intersection of both lists. Create the intersection:\r
- qsort(statelists[0].keyhead, statelists[0].len, sizeof(uint64_t), compar_int);\r
- qsort(statelists[1].keyhead, statelists[1].len, sizeof(uint64_t), compar_int);\r
+ qsort(statelists[0].head.keyhead, statelists[0].len, sizeof(uint64_t), compar_int);\r
+ qsort(statelists[1].head.keyhead, statelists[1].len, sizeof(uint64_t), compar_int);\r
\r
uint64_t *p5, *p6, *p7;\r
- p5 = p7 = statelists[0].keyhead; \r
- p6 = statelists[1].keyhead;\r
- while (p5 <= statelists[0].keytail && p6 <= statelists[1].keytail) {\r
+ p5 = p7 = statelists[0].head.keyhead; \r
+ p6 = statelists[1].head.keyhead;\r
+ while (p5 <= statelists[0].tail.keytail && p6 <= statelists[1].tail.keytail) {\r
if (compar_int(p5, p6) == 0) {\r
*p7++ = *p5++;\r
p6++;\r
while (compar_int(p5, p6) == 1) p6++;\r
}\r
}\r
- statelists[0].len = p7 - statelists[0].keyhead;\r
- statelists[0].keytail=--p7;\r
+ statelists[0].len = p7 - statelists[0].head.keyhead;\r
+ statelists[0].tail.keytail=--p7;\r
\r
memset(resultKey, 0, 6);\r
// The list may still contain several key candidates. Test each of them with mfCheckKeys\r
for (i = 0; i < statelists[0].len; i++) {\r
uint8_t keyBlock[6];\r
uint64_t key64;\r
- crypto1_get_lfsr(statelists[0].slhead + i, &key64);\r
+ crypto1_get_lfsr(statelists[0].head.slhead + i, &key64);\r
num_to_bytes(key64, 6, keyBlock);\r
key64 = 0;\r
- if (!mfCheckKeys(statelists[0].blockNo, statelists[0].keyType, 1, keyBlock, &key64)) {\r
+ if (!mfCheckKeys(statelists[0].blockNo, statelists[0].keyType, false, 1, keyBlock, &key64)) {\r
num_to_bytes(key64, 6, resultKey);\r
break;\r
}\r
}\r
\r
- free(statelists[0].slhead);\r
- free(statelists[1].slhead);\r
- \r
+ free(statelists[0].head.slhead);\r
+ free(statelists[1].head.slhead); \r
return 0;\r
}\r
\r
-int mfCheckKeys (uint8_t blockNo, uint8_t keyType, uint8_t keycnt, uint8_t * keyBlock, uint64_t * key){\r
+int mfCheckKeys (uint8_t blockNo, uint8_t keyType, bool clear_trace, uint8_t keycnt, uint8_t * keyBlock, uint64_t * key){\r
\r
*key = 0;\r
\r
- UsbCommand c = {CMD_MIFARE_CHKKEYS, {blockNo, keyType, keycnt}};\r
+ UsbCommand c = {CMD_MIFARE_CHKKEYS, {((blockNo & 0xff) | ((keyType&0xff)<<8)), clear_trace, keycnt}};\r
memcpy(c.d.asBytes, keyBlock, 6 * keycnt);\r
+ \r
+ clearCommandBuffer();\r
SendCommand(&c);\r
-\r
UsbCommand resp;\r
if (!WaitForResponseTimeout(CMD_ACK,&resp,3000)) return 1;\r
if ((resp.arg[0] & 0xff) != 0x01) return 2;\r
\r
int mfEmlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r
UsbCommand c = {CMD_MIFARE_EML_MEMGET, {blockNum, blocksCount, 0}};\r
+ clearCommandBuffer();\r
SendCommand(&c);\r
-\r
- UsbCommand resp;\r
+ UsbCommand resp;\r
if (!WaitForResponseTimeout(CMD_ACK,&resp,1500)) return 1;\r
memcpy(data, resp.d.asBytes, blocksCount * 16);\r
return 0;\r
}\r
\r
int mfEmlSetMem(uint8_t *data, int blockNum, int blocksCount) {\r
- UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, 0}};\r
- memcpy(c.d.asBytes, data, blocksCount * 16); \r
+ return mfEmlSetMem_xt(data, blockNum, blocksCount, 16);\r
+}\r
+\r
+int mfEmlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {\r
+ UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, blockBtWidth}};\r
+ memcpy(c.d.asBytes, data, blocksCount * blockBtWidth); \r
+\r
+ clearCommandBuffer();\r
SendCommand(&c);\r
return 0;\r
}\r
\r
// "MAGIC" CARD\r
\r
-int mfCSetUID(uint8_t *uid, uint8_t *oldUID, int wantWipe) {\r
+int mfCSetUID(uint8_t *uid, uint8_t *atqa, uint8_t *sak, uint8_t *oldUID, uint8_t wipecard) {\r
+\r
+ uint8_t params = MAGIC_SINGLE;\r
uint8_t block0[16];\r
- memset(block0, 0, 16);\r
+ memset(block0, 0x00, sizeof(block0));\r
+ \r
+\r
+ int old = mfCGetBlock(0, block0, params);\r
+ if (old == 0) {\r
+ PrintAndLog("old block 0: %s", sprint_hex(block0, sizeof(block0)));\r
+ } else {\r
+ PrintAndLog("Couldn't get old data. Will write over the last bytes of Block 0.");\r
+ }\r
+\r
+ // fill in the new values\r
+ // UID\r
memcpy(block0, uid, 4); \r
- block0[4] = block0[0]^block0[1]^block0[2]^block0[3]; // Mifare UID BCC\r
- // mifare classic SAK(byte 5) and ATQA(byte 6 and 7)\r
- block0[5] = 0x88;\r
- block0[6] = 0x04;\r
- block0[7] = 0x00;\r
+ // Mifare UID BCC\r
+ block0[4] = block0[0]^block0[1]^block0[2]^block0[3];\r
+ // mifare classic SAK(byte 5) and ATQA(byte 6 and 7, reversed)\r
+ if ( sak != NULL )\r
+ block0[5]=sak[0];\r
+ \r
+ if ( atqa != NULL ) {\r
+ block0[6]=atqa[1];\r
+ block0[7]=atqa[0];\r
+ }\r
+ PrintAndLog("new block 0: %s", sprint_hex(block0,16));\r
+ \r
+ if ( wipecard ) params |= MAGIC_WIPE; \r
+ if ( oldUID == NULL) params |= MAGIC_UID;\r
\r
- return mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER);\r
+ return mfCSetBlock(0, block0, oldUID, params);\r
}\r
\r
-int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, int wantWipe, uint8_t params) {\r
- uint8_t isOK = 0;\r
+int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, uint8_t params) {\r
\r
- UsbCommand c = {CMD_MIFARE_EML_CSETBLOCK, {wantWipe, params & (0xFE | (uid == NULL ? 0:1)), blockNo}};\r
+ uint8_t isOK = 0;\r
+ UsbCommand c = {CMD_MIFARE_CSETBLOCK, {params, blockNo, 0}};\r
memcpy(c.d.asBytes, data, 16); \r
+ clearCommandBuffer();\r
SendCommand(&c);\r
-\r
- UsbCommand resp;\r
- if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
+ UsbCommand resp;\r
+ if (WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {\r
isOK = resp.arg[0] & 0xff;\r
- if (uid != NULL) memcpy(uid, resp.d.asBytes, 4);\r
- if (!isOK) return 2;\r
+ if (uid != NULL) \r
+ memcpy(uid, resp.d.asBytes, 4);\r
+ if (!isOK) \r
+ return 2;\r
} else {\r
PrintAndLog("Command execute timeout");\r
return 1;\r
\r
int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) {\r
uint8_t isOK = 0;\r
-\r
- UsbCommand c = {CMD_MIFARE_EML_CGETBLOCK, {params, 0, blockNo}};\r
+ UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, blockNo, 0}}; \r
+ clearCommandBuffer();\r
SendCommand(&c);\r
-\r
- UsbCommand resp;\r
+ UsbCommand resp;\r
if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
isOK = resp.arg[0] & 0xff;\r
memcpy(data, resp.d.asBytes, 16);\r
static uint8_t trailerAccessBytes[4] = {0x08, 0x77, 0x8F, 0x00};\r
\r
// variables\r
-char logHexFileName[200] = {0x00};\r
+char logHexFileName[FILE_PATH_SIZE] = {0x00};\r
static uint8_t traceCard[4096] = {0x00};\r
-static char traceFileName[20];\r
+static char traceFileName[FILE_PATH_SIZE] = {0x00};\r
static int traceState = TRACE_IDLE;\r
static uint8_t traceCurBlock = 0;\r
static uint8_t traceCurKey = 0;\r
\r
struct Crypto1State *traceCrypto1 = NULL;\r
\r
-struct Crypto1State *revstate;\r
-uint64_t lfsr;\r
-uint32_t ks2;\r
-uint32_t ks3;\r
+struct Crypto1State *revstate = NULL;\r
\r
-uint32_t uid; // serial number\r
-uint32_t nt; // tag challenge\r
-uint32_t nt_par; \r
-uint32_t nr_enc; // encrypted reader challenge\r
-uint32_t ar_enc; // encrypted reader response\r
-uint32_t nr_ar_par; \r
-uint32_t at_enc; // encrypted tag response\r
-uint32_t at_par; \r
+uint64_t key = 0;\r
+uint32_t ks2 = 0;\r
+uint32_t ks3 = 0;\r
+\r
+uint32_t uid = 0; // serial number\r
+uint32_t nt =0; // tag challenge\r
+uint32_t nr_enc =0; // encrypted reader challenge\r
+uint32_t ar_enc =0; // encrypted reader response\r
+uint32_t at_enc =0; // encrypted tag response\r
\r
int isTraceCardEmpty(void) {\r
return ((traceCard[0] == 0) && (traceCard[1] == 0) && (traceCard[2] == 0) && (traceCard[3] == 0));\r
\r
int loadTraceCard(uint8_t *tuid) {\r
FILE * f;\r
- char buf[64];\r
- uint8_t buf8[64];\r
+ char buf[64] = {0x00};\r
+ uint8_t buf8[64] = {0x00};\r
int i, blockNum;\r
\r
- if (!isTraceCardEmpty()) saveTraceCard();\r
+ if (!isTraceCardEmpty()) \r
+ saveTraceCard();\r
+ \r
memset(traceCard, 0x00, 4096);\r
memcpy(traceCard, tuid + 3, 4);\r
+\r
FillFileNameByUID(traceFileName, tuid, ".eml", 7);\r
\r
f = fopen(traceFileName, "r");\r
if (!f) return 1;\r
\r
blockNum = 0;\r
+ \r
while(!feof(f)){\r
+ \r
memset(buf, 0, sizeof(buf));\r
if (fgets(buf, sizeof(buf), f) == NULL) {\r
- PrintAndLog("File reading error.");\r
+ PrintAndLog("File reading error.");\r
+ fclose(f);\r
return 2;\r
- }\r
+ }\r
\r
if (strlen(buf) < 32){\r
if (feof(f)) break;\r
PrintAndLog("File content error. Block data must include 32 HEX symbols");\r
+ fclose(f);\r
return 2;\r
}\r
for (i = 0; i < 32; i += 2)\r
if ((!strlen(traceFileName)) || (isTraceCardEmpty())) return 0;\r
\r
f = fopen(traceFileName, "w+");\r
+ if ( !f ) return 1;\r
+ \r
for (int i = 0; i < 64; i++) { // blocks\r
for (int j = 0; j < 16; j++) // bytes\r
fprintf(f, "%02x", *(traceCard + i * 16 + j)); \r
fprintf(f,"\n");\r
}\r
fclose(f);\r
-\r
return 0;\r
}\r
\r
int mfTraceInit(uint8_t *tuid, uint8_t *atqa, uint8_t sak, bool wantSaveToEmlFile) {\r
\r
- if (traceCrypto1) crypto1_destroy(traceCrypto1);\r
+ if (traceCrypto1) \r
+ crypto1_destroy(traceCrypto1);\r
+\r
traceCrypto1 = NULL;\r
\r
- if (wantSaveToEmlFile) loadTraceCard(tuid);\r
+ if (wantSaveToEmlFile) \r
+ loadTraceCard(tuid);\r
+ \r
traceCard[4] = traceCard[0] ^ traceCard[1] ^ traceCard[2] ^ traceCard[3];\r
traceCard[5] = sak;\r
memcpy(&traceCard[6], atqa, 2);\r
}\r
\r
\r
-int mfTraceDecode(uint8_t *data_src, int len, uint32_t parity, bool wantSaveToEmlFile) {\r
+int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {\r
uint8_t data[64];\r
\r
if (traceState == TRACE_ERROR) return 1;\r
}\r
\r
// AUTHENTICATION\r
- if ((len ==4) && ((data[0] == 0x60) || (data[0] == 0x61))) {\r
+ if ((len == 4) && ((data[0] == 0x60) || (data[0] == 0x61))) {\r
traceState = TRACE_AUTH1;\r
traceCurBlock = data[1];\r
traceCurKey = data[0] == 60 ? 1:0;\r
break;\r
\r
case TRACE_WRITE_OK: \r
- if ((len == 1) && (data[0] = 0x0a)) {\r
+ if ((len == 1) && (data[0] == 0x0a)) {\r
traceState = TRACE_WRITE_DATA;\r
\r
return 0;\r
case TRACE_AUTH1: \r
if (len == 4) {\r
traceState = TRACE_AUTH2;\r
-\r
nt = bytes_to_num(data, 4);\r
- nt_par = parity;\r
return 0;\r
} else {\r
traceState = TRACE_ERROR;\r
\r
nr_enc = bytes_to_num(data, 4);\r
ar_enc = bytes_to_num(data + 4, 4);\r
- nr_ar_par = parity;\r
return 0;\r
} else {\r
traceState = TRACE_ERROR;\r
traceState = TRACE_IDLE;\r
\r
at_enc = bytes_to_num(data, 4);\r
- at_par = parity;\r
\r
// decode key here)\r
- if (!traceCrypto1) {\r
- ks2 = ar_enc ^ prng_successor(nt, 64);\r
- ks3 = at_enc ^ prng_successor(nt, 96);\r
- revstate = lfsr_recovery64(ks2, ks3);\r
- lfsr_rollback_word(revstate, 0, 0);\r
- lfsr_rollback_word(revstate, 0, 0);\r
- lfsr_rollback_word(revstate, nr_enc, 1);\r
- lfsr_rollback_word(revstate, uid ^ nt, 0);\r
- }else{\r
- ks2 = ar_enc ^ prng_successor(nt, 64);\r
- ks3 = at_enc ^ prng_successor(nt, 96);\r
- revstate = lfsr_recovery64(ks2, ks3);\r
- lfsr_rollback_word(revstate, 0, 0);\r
- lfsr_rollback_word(revstate, 0, 0);\r
- lfsr_rollback_word(revstate, nr_enc, 1);\r
- lfsr_rollback_word(revstate, uid ^ nt, 0);\r
- }\r
- crypto1_get_lfsr(revstate, &lfsr);\r
- printf("key> %x%x\n", (unsigned int)((lfsr & 0xFFFFFFFF00000000) >> 32), (unsigned int)(lfsr & 0xFFFFFFFF));\r
- AddLogUint64(logHexFileName, "key> ", lfsr); \r
+ ks2 = ar_enc ^ prng_successor(nt, 64);\r
+ ks3 = at_enc ^ prng_successor(nt, 96);\r
+ revstate = lfsr_recovery64(ks2, ks3);\r
+ lfsr_rollback_word(revstate, 0, 0);\r
+ lfsr_rollback_word(revstate, 0, 0);\r
+ lfsr_rollback_word(revstate, nr_enc, 1);\r
+ lfsr_rollback_word(revstate, uid ^ nt, 0);\r
+\r
+ crypto1_get_lfsr(revstate, &key);\r
+ printf("Key: %012"llx"\n",key);\r
+ AddLogUint64(logHexFileName, "key: ", key); \r
\r
int blockShift = ((traceCurBlock & 0xFC) + 3) * 16;\r
if (isBlockEmpty((traceCurBlock & 0xFC) + 3)) memcpy(traceCard + blockShift + 6, trailerAccessBytes, 4);\r
\r
if (traceCurKey) {\r
- num_to_bytes(lfsr, 6, traceCard + blockShift + 10);\r
+ num_to_bytes(key, 6, traceCard + blockShift + 10);\r
} else {\r
- num_to_bytes(lfsr, 6, traceCard + blockShift);\r
+ num_to_bytes(key, 6, traceCard + blockShift);\r
}\r
if (wantSaveToEmlFile) saveTraceCard();\r
\r
\r
// nt = crypto1_word(traceCrypto1, nt ^ uid, 1) ^ nt;\r
\r
- /* traceCrypto1 = crypto1_create(lfsr); // key in lfsr\r
+ /* traceCrypto1 = crypto1_create(key); // key in lfsr\r
crypto1_word(traceCrypto1, nt ^ uid, 0);\r
crypto1_word(traceCrypto1, ar, 1);\r
crypto1_word(traceCrypto1, 0, 0);\r
\r
return 0;\r
}\r
+\r
+int tryDecryptWord(uint32_t nt, uint32_t ar_enc, uint32_t at_enc, uint8_t *data, int len){\r
+ /*\r
+ uint32_t nt; // tag challenge\r
+ uint32_t nr_enc; // encrypted reader challenge\r
+ uint32_t ar_enc; // encrypted reader response\r
+ uint32_t at_enc; // encrypted tag response\r
+ */\r
+\r
+ struct Crypto1State *pcs = NULL;\r
+ \r
+ ks2 = ar_enc ^ prng_successor(nt, 64);\r
+ ks3 = at_enc ^ prng_successor(nt, 96);\r
+ \r
+ PrintAndLog("Decrypting data with:");\r
+ PrintAndLog(" nt: %08x",nt);\r
+ PrintAndLog(" ar_enc: %08x",ar_enc);\r
+ PrintAndLog(" at_enc: %08x",at_enc);\r
+ PrintAndLog("\nEncrypted data: [%s]", sprint_hex(data,len) );\r
+\r
+ pcs = lfsr_recovery64(ks2, ks3);\r
+ mf_crypto1_decrypt(pcs, data, len, FALSE);\r
+ PrintAndLog("Decrypted data: [%s]", sprint_hex(data,len) );\r
+ crypto1_destroy(pcs);\r
+ return 0;\r
+}\r
projects / proxmark3-svn / blobdiff