diff --git a/crc.c b/crc.c
index 9f49530..8d158e9 100644
--- a/crc.c
+++ b/crc.c
@@ -5,12 +5,12 @@
 #include <sodium.h>
 #include "CRCLib.h"
 
-const int png_signature[8] = { 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a };
-const int idat_signature = 1229209940;
-const int iend_signature = 1229278788;
+const long png_signature[8] = { 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a };
+const long idat_signature = 1229209940;
+const long iend_signature = 1229278788;
 const int working = 1;
 
-int check_file_header(int *addr) {
+int check_file_header(char *addr) {
 	int signature_match = 0;
 	for( int i = 0; i < 8; i++ ) {
 		if (addr[i] != png_signature[i]) {
@@ -23,7 +23,7 @@ int check_file_header(int *addr) {
 }
 
 
-int check_header_length(int *addr, int offset) {
+int check_header_length(unsigned char *addr, long offset) {
 	unsigned int res = 0;
 	for( int i = 0; i < 4; i++ ) {
 		res |= addr[offset+i];
@@ -34,9 +34,9 @@ int check_header_length(int *addr, int offset) {
 	return res;
 }
 
-int first_idat(int *addr) {
+unsigned long first_idat(char *addr) {
 	int idat_found = 0;
-	int offset = 8;
+	unsigned long offset = 8;
 	int jump_offset = 0;
 	int header_type = 0;
 	while(idat_found == 0) {
@@ -51,10 +51,10 @@ int first_idat(int *addr) {
 	return offset;
 }
 
-int total_idat(int *addr) {
+int total_idat(char *addr) {
 	int iend_found = 0;
 	int found_idat = 0;
-	int offset = 8;
+	unsigned long offset = 8;
 	int jump_offset = 0;
 	int header_type = 0;
 	while(iend_found == 0) {
@@ -72,8 +72,8 @@ int total_idat(int *addr) {
 	return found_idat;
 }
 
-int change_idat_content(int *addr, char *message, int accuracy, int offset) {
-	printf("Starting IDAT Tranform");
+int change_idat_content(unsigned char *addr, char *message, int accuracy, unsigned long offset) {
+	printf("Starting IDAT Tranform\n");
 	if(accuracy > 4) {
 		printf("Warning, accuracy cannot be larger than 4");
 		return EXIT_FAILURE;
@@ -86,36 +86,47 @@ int change_idat_content(int *addr, char *message, int accuracy, int offset) {
 		return EXIT_FAILURE;
 	}
 
-	// Comment
-	int i = total_idat(addr);
-	printf("Total IDAT %d\n", i);
-
 	int idat_length = check_header_length(addr, offset);
+	printf("IDAT: %d\n", idat_length);
+
 	int prop_found = 0;
-	int size = 1;
-	int* idat_data = malloc(size * sizeof(int));
+	long size = 1;
+	long rounds = 0;
+	unsigned int* idat_data = malloc(size * sizeof(unsigned int));
+	for(int i = 0; i < idat_length; i++) {
+		idat_data[i] = addr[i+offset+8];
+		size++;
+		int* new_idat_data = realloc(idat_data, size * sizeof(unsigned int));
+	}
+	unsigned int temp_idat_data[size];
 	while(prop_found == 0) {
-		for(i = 0; i < idat_length; i++) {
-			idat_data[i] = addr[i+offset+8];
-			size++;
-			int* new_idat_data = realloc(idat_data, size * sizeof(int));
+		for(int i = 0; i < idat_length; i++) {
+			temp_idat_data[i] = idat_data[i];
 		}
 		int r = randombytes_uniform(5) + 1;
 		int j = randombytes_uniform(idat_length);
 		
-		idat_data[j] = (idat_data[j] + r) % 255;
+		temp_idat_data[j] = (temp_idat_data[j] + r) % 255;
 		unsigned char crc_check[size+4];
-		int idat_header[] = { 0x49, 0x44, 0x41, 0x54 };
-		for(i = 0; i < 4; i++) {
+		unsigned int idat_header[] = { 0x49, 0x44, 0x41, 0x54 };
+		for(int i = 0; i < 4; i++) {
 			crc_check[i] = idat_header[i];
 		}
-		for(i = 0; i < size; i++) {
-			crc_check[i] = idat_data[i+4];
+		for(int i = 0; i < size; i++) {
+			crc_check[i] = temp_idat_data[i+4];
+		}
+		unsigned int crcnum = crc(crc_check, idat_length);
+		//printf("New CRC: %08X\n", crcnum);
+		//printf("Test: %X\n", crcnum >> (8*3));
+		unsigned int checked_crc = crcnum >> (8*3);
+		rounds++;
+		if(checked_crc == 61) {
+			printf("Found %d in %d rounds\n", checked_crc ,rounds);
+			printf("Full CRC: %08X\n", crcnum);
+			printf("Original: %02X\n", idat_data[j]);
+			printf("Change offset: %d to hex: %02X\n", j, temp_idat_data[j]);
+			prop_found = 1;
 		}
-		int crcnum = crc(crc_check, idat_length);
-		printf("New CRC: %08X\n", crcnum);
-		printf("Test: %X\n", crcnum >> (8*3));
-		prop_found = 1;
 	}
 
 	return 0;
@@ -123,10 +134,12 @@ int change_idat_content(int *addr, char *message, int accuracy, int offset) {
 
 int main() {
 	FILE *fp;
-	int c;
-	int myArray[255] = {};
-	int i = 0;
-	int offset = 0;
+	unsigned int c;
+	//unsigned char myArray[838860];
+	unsigned char * myArray = NULL;
+	myArray = calloc(880388560, sizeof(char));
+	unsigned long i = 0;
+	unsigned long offset = 0;
 	char message[1];
 	if(sodium_init() == -1) {
 		return EXIT_FAILURE;