CHG: 'analyse hid' added @holiman 's permute functions to the output to verify

[proxmark3-svn] / common / lfdemod.c

diff --git a/common/lfdemod.c b/common/lfdemod.c
index 731496026375c87e1ea69fbb546a0893c03299f9..c35ce561881757cc4b3d15c7114c3187f86acf0d 100644 (file)
--- a/common/lfdemod.c
+++ b/common/lfdemod.c
@@ -71,7 +71,7 @@ size_t removeParity(uint8_t *BitStream, size_t startIdx, uint8_t pLen, uint8_t p
 {
        uint32_t parityWd = 0;
        size_t j = 0, bitCnt = 0;
 {
        uint32_t parityWd = 0;
        size_t j = 0, bitCnt = 0;

-       for (int word = 0; word < (bLen); word+=pLen){
+       for (int word = 0; word < (bLen); word += pLen){

                for (int bit=0; bit < pLen; bit++){
                        parityWd = (parityWd << 1) | BitStream[startIdx+word+bit];
                        BitStream[j++] = (BitStream[startIdx+word+bit]);
                for (int bit=0; bit < pLen; bit++){
                        parityWd = (parityWd << 1) | BitStream[startIdx+word+bit];
                        BitStream[j++] = (BitStream[startIdx+word+bit]);


@@ -83,7 +83,7 @@ size_t removeParity(uint8_t *BitStream, size_t startIdx, uint8_t pLen, uint8_t p
                        case 2:  if (BitStream[j]==0) { return 0; } break; //should be 1 spacer bit
                        default: if (parityTest(parityWd, pLen, pType) == 0) { return 0; } break; //test parity
                }
                        case 2:  if (BitStream[j]==0) { return 0; } break; //should be 1 spacer bit
                        default: if (parityTest(parityWd, pLen, pType) == 0) { return 0; } break; //test parity
                }

-               bitCnt+=(pLen-1);
+               bitCnt += (pLen-1);

                parityWd = 0;
        }
        // if we got here then all the parities passed
                parityWd = 0;
        }
        // if we got here then all the parities passed


@@ -677,7 +677,6 @@ int IOdemodFSK(uint8_t *dest, size_t size)
 int VikingDemod_AM(uint8_t *dest, size_t *size) {
        //make sure buffer has data
        if (*size < 64*2) return -2;
 int VikingDemod_AM(uint8_t *dest, size_t *size) {
        //make sure buffer has data
        if (*size < 64*2) return -2;

-

        size_t startIdx = 0;
        uint8_t preamble[] = {1,1,1,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
        uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
        size_t startIdx = 0;
        uint8_t preamble[] = {1,1,1,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
        uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);


@@ -693,7 +692,7 @@ int VikingDemod_AM(uint8_t *dest, size_t *size) {
        if ( checkCalc != 0xA8 ) return -5;     
        if (*size != 64) return -6;
        //return start position
        if ( checkCalc != 0xA8 ) return -5;     
        if (*size != 64) return -6;
        //return start position

-       return (int) startIdx;
+       return (int)startIdx;

 }
 
 // by iceman
 }
 
 // by iceman


@@ -706,9 +705,20 @@ int Visa2kDemod_AM(uint8_t *dest, size_t *size) {
        if (errChk == 0) return -2; //preamble not found
        if (*size != 96) return -3; //wrong demoded size
        //return start position
        if (errChk == 0) return -2; //preamble not found
        if (*size != 96) return -3; //wrong demoded size
        //return start position

-       return (int) startIdx;
+       return (int)startIdx;
+}
+// by iceman
+// find Noralsy preamble in already demoded data
+int NoralsyDemod_AM(uint8_t *dest, size_t *size) {
+       if (*size < 96*2) return -1; //make sure buffer has data
+       size_t startIdx = 0;
+       uint8_t preamble[] = {1,0,1,1,1,0,1,1,0,0,0,0};
+       uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
+       if (errChk == 0) return -2; //preamble not found
+       if (*size != 96) return -3; //wrong demoded size
+       //return start position
+       return (int)startIdx;

 }
 }

-

 // find presco preamble 0x10D in already demoded data
 int PrescoDemod(uint8_t *dest, size_t *size) {
        if (*size < 128*2) return -1; //make sure buffer has data
 // find presco preamble 0x10D in already demoded data
 int PrescoDemod(uint8_t *dest, size_t *size) {
        if (*size < 128*2) return -1; //make sure buffer has data


@@ -718,54 +728,41 @@ int PrescoDemod(uint8_t *dest, size_t *size) {
        if (errChk == 0) return -2; //preamble not found
        if (*size != 128) return -3; //wrong demoded size
        //return start position
        if (errChk == 0) return -2; //preamble not found
        if (*size != 128) return -3; //wrong demoded size
        //return start position

-       return (int) startIdx;
+       return (int)startIdx;

 }
 
 // Ask/Biphase Demod then try to locate an ISO 11784/85 ID
 // BitStream must contain previously askrawdemod and biphasedemoded data
 }
 
 // Ask/Biphase Demod then try to locate an ISO 11784/85 ID
 // BitStream must contain previously askrawdemod and biphasedemoded data

-int FDXBdemodBI(uint8_t *dest, size_t *size)
-{
-       //make sure buffer has enough data
-       if (*size < 128) return -1;
-
+int FDXBdemodBI(uint8_t *dest, size_t *size) {
+       if (*size < 128*2) return -1;   //make sure buffer has enough data

        size_t startIdx = 0;
        uint8_t preamble[] = {0,0,0,0,0,0,0,0,0,0,1};
        size_t startIdx = 0;
        uint8_t preamble[] = {0,0,0,0,0,0,0,0,0,0,1};

-

        uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
        if (errChk == 0) return -2; //preamble not found
        uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
        if (errChk == 0) return -2; //preamble not found

+       if (*size != 128) return -3; //wrong demoded size
+       //return start position

        return (int)startIdx;
 }
 
 // ASK/Diphase fc/64 (inverted Biphase)
 // Note: this i s not a demod, this is only a detection
 // the parameter *dest needs to be demoded before call
        return (int)startIdx;
 }
 
 // ASK/Diphase fc/64 (inverted Biphase)
 // Note: this i s not a demod, this is only a detection
 // the parameter *dest needs to be demoded before call

+// 0xFFFF preamble, 64bits

 int JablotronDemod(uint8_t *dest, size_t *size){
 int JablotronDemod(uint8_t *dest, size_t *size){

-       //make sure buffer has enough data
-       if (*size < 64) return -1;
-
+       if (*size < 64*2) return -1;    //make sure buffer has enough data

        size_t startIdx = 0;
        size_t startIdx = 0;

-       // 0xFFFF preamble, 64bits
-       uint8_t preamble[] = {
-                       1,1,1,1,
-                   1,1,1,1,
-                               1,1,1,1,
-                               1,1,1,1,
-                               0
-               };
-
+       uint8_t preamble[] = {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0};

        uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
        uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);

-       if (errChk == 0) return -4; //preamble not found
-       if (*size != 64) return -3;
+       if (errChk == 0) return -2; //preamble not found
+       if (*size != 64) return -3; // wrong demoded size

        
        uint8_t checkchksum = 0;
        for (int i=16; i < 56; i += 8) {
                checkchksum += bytebits_to_byte(dest+startIdx+i,8);
        }
        checkchksum ^= 0x3A;
        
        uint8_t checkchksum = 0;
        for (int i=16; i < 56; i += 8) {
                checkchksum += bytebits_to_byte(dest+startIdx+i,8);
        }
        checkchksum ^= 0x3A;

-

        uint8_t crc = bytebits_to_byte(dest+startIdx+56, 8);
        uint8_t crc = bytebits_to_byte(dest+startIdx+56, 8);

-       
-       if ( checkchksum != crc ) return -5;    
+       if ( checkchksum != crc ) return -5;

        return (int)startIdx;
 }
 
        return (int)startIdx;
 }
 


@@ -804,7 +801,7 @@ int PyramiddemodFSK(uint8_t *dest, size_t *size)
        *size = fskdemod(dest, *size, 50, 1, 10, 8);  // fsk2a RF/50 
        if (*size < 128) return -2;  //did we get a good demod?
 
        *size = fskdemod(dest, *size, 50, 1, 10, 8);  // fsk2a RF/50 
        if (*size < 128) return -2;  //did we get a good demod?
 

-       uint8_t preamble[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1};
+       uint8_t preamble[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,1};

        size_t startIdx = 0;
        uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
        if (errChk == 0) return -4; //preamble not found
        size_t startIdx = 0;
        uint8_t errChk = preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx);
        if (errChk == 0) return -4; //preamble not found