X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/ca4714cd23338a762c45839d1b3010988b7612a7..6a1f2d82bb7d33cd49f9c191f36144ca10d5b629:/client/cmdhfmf.c

diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index bdb0e7e7..6d0bebd7 100644
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -1894,7 +1894,6 @@ 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);
@@ -1961,14 +1960,17 @@ int CmdHF14AMfSniff(const char *Cmd){
 				printf(">\n");
 				PrintAndLog("received trace len: %d packages: %d", blockLen, pckNum);
 				num = 0;
-				while (bufPtr - buf + 9 < blockLen) {
-					isTag = bufPtr[3] & 0x80 ? true:false;
-					bufPtr += 4;
-					parity = *((uint32_t *)(bufPtr));
-					bufPtr += 4;
-					len = bufPtr[0];
-					bufPtr++;
-					if ((len == 14) && (bufPtr[0] == 0xff) && (bufPtr[1] == 0xff)) {
+				while (bufPtr - buf < blockLen) {
+					bufPtr += 6;	// ignore void timing information
+					len = *((uint16_t *)bufPtr);
+					if(len & 0x8000) {
+						isTag = true;
+						len &= 0x7fff;
+					} else {
+						isTag = false;
+					}
+					bufPtr += 2;
+					if ((len == 14) && (bufPtr[0] == 0xff) && (bufPtr[1] == 0xff) && (bufPtr[12] == 0xff) && (bufPtr[13] == 0xff)) {
 						memcpy(uid, bufPtr + 2, 7);
 						memcpy(atqa, bufPtr + 2 + 7, 2);
 						uid_len = (atqa[0] & 0xC0) == 0x40 ? 7 : 4;
@@ -1987,9 +1989,10 @@ 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, parity, wantSaveToEmlFile);
+						if (wantDecrypt) mfTraceDecode(bufPtr, len, wantSaveToEmlFile);
 					}
 					bufPtr += len;
+					bufPtr += ((len-1)/8+1);	// ignore parity
 					num++;
 				}
 			}