Simple algorithm for mixing/obfuscating a string with pre-defined chars

Question

I have a string as follows:

• Its length is 10.
• It represents base 36 and as such includes digits and uppercase letters.
• The origin of the st

Answer 1

Unless this is a homework assignment I'd suggest you to use Base64 encoding: new sun.misc.BASE64Encoder().encode(string.getBytes()).

This does not encrypt string but makes it unreadable.

If you really want to encrypt the string use java cryptography API, e.g:

        Cipher cipher = Cipher.getInstance("DES");
        cipher.init(Cipher.ENCRYPT_MODE, password);
        String encrypedStr = base64encoder.encode(cipher.doFinal(cleartext));

Now encryptedString is encrypted and stored in base64 format.

You can easily find how to decrypt the string back. Good luck.