Experimental HitagS support

[proxmark3-svn] / client / loclass / cipher.c

diff --git a/client/loclass/cipher.c b/client/loclass/cipher.c
index 7c9cc873a019f1ae67c9c84ba8cabd789d4e88bd..a701da31934164630e4df7f80605149a449c3dbd 100644 (file)
--- a/client/loclass/cipher.c
+++ b/client/loclass/cipher.c
@@ -224,23 +224,44 @@ void MAC(uint8_t* k, BitstreamIn input, BitstreamOut out)
 void doMAC(uint8_t *cc_nr_p, uint8_t *div_key_p, uint8_t mac[4])
 {
        uint8_t cc_nr[13] = { 0 };
 void doMAC(uint8_t *cc_nr_p, uint8_t *div_key_p, uint8_t mac[4])
 {
        uint8_t cc_nr[13] = { 0 };

-    uint8_t div_key[8];
+       uint8_t div_key[8];

        //cc_nr=(uint8_t*)malloc(length+1);
 
        //cc_nr=(uint8_t*)malloc(length+1);
 

-       memcpy(cc_nr,cc_nr_p,12);
-    memcpy(div_key,div_key_p,8);
+       memcpy(cc_nr, cc_nr_p, 12);
+       memcpy(div_key, div_key_p, 8);

 
        reverse_arraybytes(cc_nr,12);
 
        reverse_arraybytes(cc_nr,12);

-       BitstreamIn bitstream = {cc_nr,12 * 8,0};
-    uint8_t dest []= {0,0,0,0,0,0,0,0};
-    BitstreamOut out = { dest, sizeof(dest)*8, 0 };
-    MAC(div_key,bitstream, out);
-    //The output MAC must also be reversed
-    reverse_arraybytes(dest, sizeof(dest));
-    memcpy(mac, dest, 4);
+       BitstreamIn bitstream = {cc_nr, 12 * 8, 0};
+       uint8_t dest []= {0,0,0,0,0,0,0,0};
+       BitstreamOut out = { dest, sizeof(dest)*8, 0 };
+       MAC(div_key,bitstream, out);
+       //The output MAC must also be reversed
+       reverse_arraybytes(dest, sizeof(dest));
+       memcpy(mac, dest, 4);

        //free(cc_nr);
        //free(cc_nr);

-    return;
+       return;

 }
 }

+void doMAC_N(uint8_t *address_data_p, uint8_t address_data_size, uint8_t *div_key_p, uint8_t mac[4])
+{
+       uint8_t *address_data;
+       uint8_t div_key[8];
+       address_data = (uint8_t*) malloc(address_data_size);
+
+       memcpy(address_data, address_data_p, address_data_size);
+       memcpy(div_key, div_key_p, 8);
+
+       reverse_arraybytes(address_data, address_data_size);
+       BitstreamIn bitstream = {address_data, address_data_size * 8, 0};
+       uint8_t dest []= {0,0,0,0,0,0,0,0};
+       BitstreamOut out = { dest, sizeof(dest)*8, 0 };
+       MAC(div_key, bitstream, out);
+       //The output MAC must also be reversed
+       reverse_arraybytes(dest, sizeof(dest));
+       memcpy(mac, dest, 4);
+       free(address_data);
+       return;
+}
+

 #ifndef ON_DEVICE
 int testMAC()
 {
 #ifndef ON_DEVICE
 int testMAC()
 {