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hf mf sniff transfered parity from arm to decoding procedure

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This commit is contained in:
Merlokbr@gmail.com 2012-07-17 15:19:15 +00:00
commit 71d90e54cd
6 changed files with 20 additions and 11 deletions
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7
client/cmdhfmf.c
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@ -1558,6 +1558,7 @@ int CmdHF14AMfSniff(const char *Cmd){
uint8_t atqa[2];
uint8_t sak;
bool isTag;
uint32_t parity;
uint8_t buf[3000];
uint8_t * bufPtr = buf;
memset(buf, 0x00, 3000);
@ -1625,7 +1626,9 @@ int CmdHF14AMfSniff(const char *Cmd){
num = 0;
while (bufPtr - buf + 9 < blockLen) {
isTag = bufPtr[3] & 0x80 ? true:false;
bufPtr += 8;
bufPtr += 4;
parity = *((uint32_t *)(bufPtr));
bufPtr += 4;
len = bufPtr[0];
bufPtr++;
if ((len == 14) && (bufPtr[0] = 0xff) && (bufPtr[1] = 0xff)) {
@ -1642,7 +1645,7 @@ int CmdHF14AMfSniff(const char *Cmd){
} else {
PrintAndLog("%s(%d):%s", isTag ? "TAG":"RDR", num, sprint_hex(bufPtr, len));
if (wantLogToFile) AddLogHex(logHexFileName, isTag ? "TAG: ":"RDR: ", bufPtr, len);
if (wantDecrypt) mfTraceDecode(bufPtr, len, wantSaveToEmlFile);
if (wantDecrypt) mfTraceDecode(bufPtr, len, parity, wantSaveToEmlFile);
}
bufPtr += len;
num++;

8
client/mifarehost.c
View file

@ -295,9 +295,12 @@ uint32_t ks3;
uint32_t uid; // serial number
uint32_t nt; // tag challenge
uint32_t nt_par;
uint32_t nr_enc; // encrypted reader challenge
uint32_t ar_enc; // encrypted reader response
uint32_t nr_ar_par;
uint32_t at_enc; // encrypted tag response
uint32_t at_par;
int isTraceCardEmpty(void) {
return ((traceCard[0] == 0) && (traceCard[1] == 0) && (traceCard[2] == 0) && (traceCard[3] == 0));
@ -401,7 +404,7 @@ 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, uint32_t parity, bool wantSaveToEmlFile) {
uint8_t data[64];
if (traceState == TRACE_ERROR) return 1;
@ -504,6 +507,7 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
traceState = TRACE_AUTH2;
nt = bytes_to_num(data, 4);
nt_par = parity;
return 0;
} else {
traceState = TRACE_ERROR;
@ -517,6 +521,7 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
nr_enc = bytes_to_num(data, 4);
ar_enc = bytes_to_num(data + 4, 4);
nr_ar_par = parity;
return 0;
} else {
traceState = TRACE_ERROR;
@ -529,6 +534,7 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
traceState = TRACE_IDLE;
at_enc = bytes_to_num(data, 4);
at_par = parity;
// decode key here)
if (!traceCrypto1) {

2
client/mifarehost.h
View file

@ -73,7 +73,7 @@ int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, int wantWipe, uint
int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params);
int mfTraceInit(uint8_t *tuid, uint8_t *atqa, uint8_t sak, bool wantSaveToEmlFile);
int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile);
int mfTraceDecode(uint8_t *data_src, int len, uint32_t parity, bool wantSaveToEmlFile);
int isTraceCardEmpty(void);
int isBlockEmpty(int blockN);