Encoder.java

package com.hao.util.password;

import com.hao.util.password.codec.Utf8;

/**
 * Created by user on 2016/4/19.
 */
public class Encoder {

    private Encoder() {}

    public static boolean equals(String expected,String actual) {
        byte[] expectedBytes = bytesUtf8(expected);
        byte[] actualBytes = bytesUtf8(actual);
        int expectedLength = expectedBytes == null ? -1 : expectedBytes.length;
        int actualLength = actualBytes == null ? -1 : actualBytes.length;
        if (expectedLength != actualLength) {
            return false;
        }
        int result = 0;
        for (int i = 0; i < expectedLength; i++) {
            result |= expectedBytes[i] ^ actualBytes[i];
        }
        return result == 0;
    }

    private static byte[] bytesUtf8(String s) {
        if (s == null) {
            return null;
        }
        return Utf8.encode(s);
    }

}