FIX: @pwpiwi 's fixes for darkside / nested attack about the NACK/PRNG bugs.

[proxmark3-svn] / client / cmddata.c

diff --git a/client/cmddata.c b/client/cmddata.c
index bec1b5aa3f4d4394f011394fa61edca5b9a06767..4eca030db416480829f45852e30df8ebccfbfd74 100644 (file)
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -500,10 +500,9 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose)
        //ask raw demod GraphBuffer first
        int offset=0, clk=0, invert=0, maxErr=0;
        sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
-
-       uint8_t BitStream[MAX_DEMOD_BUF_LEN];     
+       
+       uint8_t BitStream[MAX_DEMOD_BUF_LEN];
        size_t size = getFromGraphBuf(BitStream);         
-       //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
        int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);  
        if ( errCnt < 0 || errCnt > maxErr ) {   
                if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);  
@@ -1462,6 +1461,17 @@ int CmdFSKdemodPyramid(const char *Cmd)
 // NATIONAL CODE, ICAR database
 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
 // FLAG (animal/non-animal)
+/*
+38 IDbits   
+10 country code 
+1 extra app bit
+14 reserved bits
+1 animal bit
+16 ccitt CRC chksum over 64bit ID CODE.
+24 appli bits.
+
+-- sample: 985121004515220  [ 37FF65B88EF94 ]
+*/
 int CmdFDXBdemodBI(const char *Cmd){
 
        int invert = 1;
@@ -1482,13 +1492,13 @@ int CmdFDXBdemodBI(const char *Cmd){
                if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
                return 0;
        } 
-
+       
        int preambleIndex = FDXBdemodBI(BitStream, &size);
        if (preambleIndex < 0){
                if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
                return 0;
        }
-
+       
        setDemodBuf(BitStream, 128, preambleIndex);
 
        // remove but don't verify parity. (pType = 2)
@@ -1947,7 +1957,7 @@ typedef struct {
        uint8_t * buffer;
        uint32_t numbits;
        uint32_t position;
-}BitstreamOut;
+} BitstreamOut;
 
 bool _headBit( BitstreamOut *stream)
 {