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

What about having just an array with the 36 characters in a random order? Something like a One-time pad encryption but with a fixed pad:

static String source="ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
static String target="Q5A8ZWS0XEDC6RFVT9GBY4HNU3J2MI1KO7LP";

public static String obfuscate(String s) {
    char[] result= new char[10];
    for (int i=0;i

So a 10 characters string like "HELLO12345" becomes "0ZCCF2MI1K". Obfuscated, but not encrypted