//package se.ramfelt.psnfriends.util;
import java.util.Random;
import java.util.StringTokenizer;
public class RandomXorObfuscator {
private final long seed;
public RandomXorObfuscator(long seed) {
this.seed = seed;
}
public String perform(String text) {
if (text == null) {
return null;
}
Random random = new Random(seed);
StringBuilder builder = new StringBuilder(text.length());
char[] chars = text.toCharArray();
for (int i = 0; i < chars.length; i++) {
builder.append((int)(chars[i] ^ random.nextInt()));
builder.append(',');
}
return builder.toString();
}
public String reverse(String text) {
if (text == null) {
return null;
}
StringTokenizer tokenizer = new StringTokenizer(text, ",");
StringBuilder builder = new StringBuilder();
Random random = new Random(seed);
while (tokenizer.hasMoreTokens()) {
builder.append((char)(Integer.parseInt(tokenizer.nextToken()) ^ random.nextInt()));
}
return builder.toString();
}
}