X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/2ae8a312e058f71d0f02be4f2f9cc6f284ebbf34..f07ffa7672ccff152875a5560fd7d2e3edbd6165:/client/loclass/elite_crack.c

diff --git a/client/loclass/elite_crack.c b/client/loclass/elite_crack.c
index cba31808..2395a178 100644
--- a/client/loclass/elite_crack.c
+++ b/client/loclass/elite_crack.c
@@ -151,9 +151,9 @@ void hash1(uint8_t csn[] , uint8_t k[])
 	k[0] = csn[0]^csn[1]^csn[2]^csn[3]^csn[4]^csn[5]^csn[6]^csn[7];
 	k[1] = csn[0]+csn[1]+csn[2]+csn[3]+csn[4]+csn[5]+csn[6]+csn[7];
 	k[2] = rr(swap( csn[2]+k[1] ));
-	k[3] = rr(swap( csn[3]+k[0] ));
-	k[4] = ~rr(swap( csn[4]+k[2] ))+1;
-	k[5] = ~rr(swap( csn[5]+k[3] ))+1;
+	k[3] = rl(swap( csn[3]+k[0] ));
+	k[4] = ~rr( csn[4]+k[2] )+1;
+	k[5] = ~rl( csn[5]+k[3] )+1;
 	k[6] = rr( csn[6]+(k[4]^0x3c) );
 	k[7] = rl( csn[7]+(k[5]^0xc3) );
 	int i;
@@ -394,7 +394,7 @@ int bruteforceItem(dumpdata item, uint16_t keytable[])
 		//Diversify
 		diversifyKey(item.csn, key_sel_p, div_key);
 		//Calc mac
-        doMAC(item.cc_nr,12, div_key,calculated_MAC);
+		doMAC(item.cc_nr, div_key,calculated_MAC);
 
 		if(memcmp(calculated_MAC, item.mac, 4) == 0)
 		{
@@ -522,8 +522,8 @@ int bruteforceDump(uint8_t dump[], size_t dumpsize, uint16_t keytable[])
 		errors += bruteforceItem(*attack, keytable);
 	}
 	free(attack);
-	clock_t t2 = clock();
-	float diff = (((float)t2 - (float)t1) / CLOCKS_PER_SEC );
+	t1 = clock() - t1;
+	float diff = ((float)t1 / CLOCKS_PER_SEC );
 	prnlog("\nPerformed full crack in %f seconds",diff);
 
 	// Pick out the first 16 bytes of the keytable.
@@ -552,7 +552,6 @@ int bruteforceDump(uint8_t dump[], size_t dumpsize, uint16_t keytable[])
  */
 int bruteforceFile(const char *filename, uint16_t keytable[])
 {
-
 	FILE *f = fopen(filename, "rb");
 	if(!f) {
 		prnlog("Failed to read from file '%s'", filename);
@@ -563,11 +562,28 @@ int bruteforceFile(const char *filename, uint16_t keytable[])
 	long fsize = ftell(f);
 	fseek(f, 0, SEEK_SET);
 
+	if (fsize < 0) {
+		prnlog("Error, when getting filesize");
+		if (f) {
+			fclose(f);
+			f = NULL;
+		}
+		return 1;
+	}
+
 	uint8_t *dump = malloc(fsize);
-	fread(dump, fsize, 1, f);
-	fclose(f);
+	size_t bytes_read = fread(dump, 1, fsize, f);
 
-	return bruteforceDump(dump,fsize,keytable);
+	if (f) {
+		fclose(f);
+		f = NULL;
+	}
+    if (bytes_read < fsize) {
+        prnlog("Error, could only read %d bytes (should be %d)",bytes_read, fsize );
+    }
+	uint8_t res = bruteforceDump(dump,fsize,keytable);
+	free(dump);
+	return res;
 }
 /**
  *
@@ -611,9 +627,18 @@ int _testBruteforce()
 			**** The 64-bit HS Custom Key Value = 5B7C62C491C11B39 ****
 		**/
 		uint16_t keytable[128] = {0};
-		//save some time...
-		startvalue = 0x7B0000;
-		errors |= bruteforceFile("iclass_dump.bin",keytable);
+
+		//Test a few variants
+		if(fileExists("iclass_dump.bin"))
+		{
+			errors |= bruteforceFile("iclass_dump.bin",keytable);
+		}else if(fileExists("loclass/iclass_dump.bin")){
+			errors |= bruteforceFile("loclass/iclass_dump.bin",keytable);
+		}else if(fileExists("client/loclass/iclass_dump.bin")){
+			errors |= bruteforceFile("client/loclass/iclass_dump.bin",keytable);
+		}else{
+			prnlog("Error: The file iclass_dump.bin was not found!");
+		}
 	}
 	return errors;
 }
@@ -647,6 +672,21 @@ int _test_iclass_key_permutation()
 	prnlog("[+] Iclass key permutation OK!");
 	return 0;
 }
+int _testHash1()
+{
+    uint8_t csn[8]= {0x01,0x02,0x03,0x04,0xF7,0xFF,0x12,0xE0};
+    uint8_t k[8] = {0};
+    hash1(csn, k);
+    uint8_t expected[8] = {0x7E,0x72,0x2F,0x40,0x2D,0x02,0x51,0x42};
+    if(memcmp(k,expected,8) != 0)
+    {
+        prnlog("Error with hash1!");
+        printarr("calculated", k, 8);
+        printarr("expected", expected, 8);
+        return 1;
+    }
+    return 0;
+}
 
 int testElite()
 {
@@ -679,11 +719,13 @@ int testElite()
         prnlog("[+] Hash2 looks fine...");
     }
 
-    prnlog("[+] Testing key diversification ...");
-
 	int errors = 0 ;
-	errors +=_test_iclass_key_permutation();
+    prnlog("[+] Testing hash1...");
+    errors += _testHash1();
+    prnlog("[+] Testing key diversification ...");
+    errors +=_test_iclass_key_permutation();
 	errors += _testBruteforce();
+
 	return errors;
 
 }