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This commit is contained in:
merlokk 2018-02-02 20:16:55 +02:00
commit e2afe0698b
3 changed files with 12 additions and 4 deletions
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2
client/cmdhfmf.c
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@ -2608,7 +2608,7 @@ int CmdHF14AMfSniff(const char *Cmd){
if (wantLogToFile)
AddLogHex(logHexFileName, isTag ? "TAG: ":"RDR: ", bufPtr, len);
if (wantDecrypt)
mfTraceDecode(bufPtr, len, wantSaveToEmlFile);
mfTraceDecode(bufPtr, len, bufPtr[len], wantSaveToEmlFile);
num++;
}
bufPtr += len;

12
client/mifarehost.c
View file

@ -582,6 +582,7 @@ uint32_t ks3;
uint32_t uid; // serial number
uint32_t nt; // tag challenge
uint32_t nt_enc; // encrypted tag challenge
uint8_t nt_enc_par;
uint32_t nr_enc; // encrypted reader challenge
uint32_t ar_enc; // encrypted reader response
uint32_t at_enc; // encrypted tag response
@ -704,7 +705,7 @@ void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len, bool i
}
int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
int mfTraceDecode(uint8_t *data_src, int len, uint8_t parity, bool wantSaveToEmlFile) {
uint8_t data[64];
if (traceState == TRACE_ERROR) return 1;
@ -811,6 +812,7 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
nt = bytes_to_num(data, 4);
} else {
nt_enc = bytes_to_num(data, 4);
nt_enc_par = parity;
}
return 0;
} else {
@ -865,8 +867,14 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
uint32_t nr1 = crypto1_word(pcs, nr_enc, 1) ^ nr_enc;
uint32_t ar1 = crypto1_word(pcs, 0, 0) ^ ar_enc;
uint32_t at1 = crypto1_word(pcs, 0, 0) ^ at_enc;
printf("key> nr1: %08x ar1: %08x at1: %08x\n", nr1, ar1, at1);
printf("key> nr1: %08x ar1: %08x at1: %08x nt_parity: %s\n", nr1, ar1, at1, printBitsPar(&nt_enc_par, 4));
bool check = false;
check = oddparity8(nt1 >> 8 & 0xff) ^ (nt1 & 0x01) ^ ((nt_enc_par >> 1) & 0x01) ^ (nt_enc & 0x01);
if (check)
printf("check1 error\n");
ks2 = ar_enc ^ prng_successor(nt1, 64);
ks3 = at_enc ^ prng_successor(nt1, 96);

2
client/mifarehost.h
View file

@ -50,7 +50,7 @@ extern int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWi
extern int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params);
extern int mfTraceInit(uint8_t *tuid, uint8_t *atqa, uint8_t sak, bool wantSaveToEmlFile);
extern int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile);
extern int mfTraceDecode(uint8_t *data_src, int len, uint8_t parity, bool wantSaveToEmlFile);
extern int isTraceCardEmpty(void);
extern int isBlockEmpty(int blockN);