X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/a66fca86b9f81e07161e89c101338968eda9d6c5..refs/pull/550/head:/client/loclass/cipherutils.c?ds=inline

diff --git a/client/loclass/cipherutils.c b/client/loclass/cipherutils.c
index 685a3815..b5e365bf 100644
--- a/client/loclass/cipherutils.c
+++ b/client/loclass/cipherutils.c
@@ -1,5 +1,17 @@
 /*****************************************************************************
- * This file is part of iClassCipher. It is a reconstructon of the cipher engine
+ * WARNING
+ *
+ * THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY. 
+ * 
+ * USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL 
+ * PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL, 
+ * AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES. 
+ * 
+ * THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS. 
+ *
+ *****************************************************************************
+ *
+ * This file is part of loclass. It is a reconstructon of the cipher engine
  * used in iClass, and RFID techology.
  *
  * The implementation is based on the work performed by
@@ -10,7 +22,7 @@
  *
  * This is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
+ * by the Free Software Foundation, or, at your option, any later version. 
  *
  * This file is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -18,15 +30,16 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with IClassCipher.  If not, see <http://www.gnu.org/licenses/>.
+ * along with loclass.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ * 
  ****************************************************************************/
 
-#include "cipherutils.h"
-#include "../util.h"
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
-
+#include "fileutils.h"
+#include "cipherutils.h"
 /**
  *
  * @brief Return and remove the first bit (x0) in the stream : <x0 x1 x2 x3 ... xn >
@@ -101,6 +114,24 @@ int numBits(BitstreamOut *stream)
 	return stream->numbits;
 }
 
+void x_num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
+{
+	while (len--) {
+		dest[len] = (uint8_t) n;
+		n >>= 8;
+	}
+}
+
+uint64_t x_bytes_to_num(uint8_t* src, size_t len)
+{
+	uint64_t num = 0;
+	while (len--)
+	{
+		num = (num << 8) | (*src);
+		src++;
+	}
+	return num;
+}
 uint8_t reversebytes(uint8_t b) {
 	b = (b & 0xF0) >> 4 | (b & 0x0F) << 4;
 	b = (b & 0xCC) >> 2 | (b & 0x33) << 2;
@@ -115,13 +146,76 @@ void reverse_arraybytes(uint8_t* arr, size_t len)
 		arr[i] = reversebytes(arr[i]);
 	}
 }
+void reverse_arraycopy(uint8_t* arr, uint8_t* dest, size_t len)
+{
+	uint8_t i;
+	for( i =0; i< len ; i++)
+	{
+		dest[i] = reversebytes(arr[i]);
+	}
+}
 
+void printarr(char * name, uint8_t* arr, int len)
+{
+	int cx;
+	size_t outsize = 40+strlen(name)+len*5;
+	char* output = malloc(outsize);
+	memset(output, 0,outsize);
+
+	int i ;
+	cx = snprintf(output,outsize, "uint8_t %s[] = {", name);
+	for(i =0 ;  i< len ; i++)
+	{
+		cx += snprintf(output+cx,outsize-cx,"0x%02x,",*(arr+i));//5 bytes per byte
+	}
+	cx += snprintf(output+cx,outsize-cx,"};");
+	prnlog(output);
+	free(output);
+}
+
+void printvar(char * name, uint8_t* arr, int len)
+{
+	int cx;
+	size_t outsize = 40+strlen(name)+len*2;
+	char* output = malloc(outsize);
+	memset(output, 0,outsize);
+
+	int i ;
+	cx = snprintf(output,outsize,"%s = ", name);
+	for(i =0 ;  i< len ; i++)
+	{
+		cx += snprintf(output+cx,outsize-cx,"%02x",*(arr+i));//2 bytes per byte
+	}
+
+	prnlog(output);
+	free(output);
+}
+
+void printarr_human_readable(char * title, uint8_t* arr, int len)
+{
+	int cx;
+	size_t outsize = 100+strlen(title)+len*4;
+	char* output = malloc(outsize);
+	memset(output, 0,outsize);
+
+
+	int i;
+	cx = snprintf(output,outsize,  "\n\t%s\n", title);
+	for(i =0 ;  i< len ; i++)
+	{
+		if(i % 16 == 0)
+			cx += snprintf(output+cx,outsize-cx,"\n%02x| ", i );
+		cx += snprintf(output+cx,outsize-cx, "%02x ",*(arr+i));
+	}
+	prnlog(output);
+	free(output);
+}
 
 //-----------------------------
 // Code for testing below
 //-----------------------------
 
-
+#ifndef ON_DEVICE
 int testBitStream()
 {
 	uint8_t input [] = {0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF};
@@ -137,14 +231,14 @@ int testBitStream()
 	}
 	if(memcmp(input, output, sizeof(input)) == 0)
 	{
-		printf("Bitstream test 1 ok\n");
+		prnlog("    Bitstream test 1 ok");
 	}else
 	{
-		printf("Bitstream test 1 failed\n");
+		prnlog("    Bitstream test 1 failed");
 		uint8_t i;
 		for(i = 0 ; i < sizeof(input) ; i++)
 		{
-			printf("IN %02x, OUT %02x\n", input[i], output[i]);
+			prnlog("    IN %02x, OUT %02x", input[i], output[i]);
 		}
 		return 1;
 	}
@@ -171,14 +265,14 @@ int testReversedBitstream()
 	}
 	if(memcmp(input, output, sizeof(input)) == 0)
 	{
-		printf("Bitstream test 2 ok\n");
+		prnlog("    Bitstream test 2 ok");
 	}else
 	{
-		printf("Bitstream test 2 failed\n");
+		prnlog("    Bitstream test 2 failed");
 		uint8_t i;
 		for(i = 0 ; i < sizeof(input) ; i++)
 		{
-			printf("IN %02x, MIDDLE: %02x, OUT %02x\n", input[i],reverse[i], output[i]);
+			prnlog("    IN %02x, MIDDLE: %02x, OUT %02x", input[i],reverse[i], output[i]);
 		}
 		return 1;
 	}
@@ -188,8 +282,10 @@ int testReversedBitstream()
 
 int testCipherUtils(void)
 {
+	prnlog("[+] Testing some internals...");
 	int retval = 0;
 	retval |= testBitStream();
 	retval |= testReversedBitstream();
 	return retval;
 }
+#endif