String encryption tool.

Parse a set of given source files and encrypt all strings located inside the 'ok-to-encrypt' areas, marked by the following comments:

// BEGIN_ENCRYPT
// STOP_ENCRYPT

Usage:

Place // BEGIN_ENCRYPT to mark the beginning of an encryption area.

Strings outside of the marked area will be ignored.

Place // STOP_ENCRYPT to mark the end of an encryption area. Drag and drop your source files over str_crypt.exe. All of the given source files are now encrypted. NOTE: You need to specify the encryption key. This key will be used to encrypt/decrypt the strings.

PLEASE NOTE:

You have to place the comments right at the beginning of a new line, with no additional spaces or tabs.

Example:

#include <stdio.h>
#include <string.h>
#include "str_decrypt.h"

int main()
{

// BEGIN_ENCRYPT

    printf(XOR("This is a test\n"));
    printf(XOR("This is a new line with an int %d\n"), 5);
    printf(XOR("This is another line with a string %s \n"), XOR("A string"));
    printf(XOR("This is a line with an int, float and a string: %d %f %s\n"), 5, 5.45, XOR("Hello"));

// STOP_ENCRYPT

    freeGC();
    getchar();
    return 0;
}

Additional info:

I have implemented a very basic 'Garbage collector' for the decryption method in order to free all allocated memory. All you have to do to free the memory is call freeGC(). This will delete all of the previously decrypted strings. The encryption method is XOR-ing, but you can easily implement your own. This tool is just a very basic example of string obfuscation.