Timing Side-Channel Mitigated Password Checker

PasswordChecker.java

private static boolean verifyPassword(String realPassword, String providedPassword) {
    if (realPassword.length() != providedPassword.length()) {
        return false;
    }

    int result = 0;
    for (int i = 0; i < realPassword.length(); i++) {
        result |= realPassword.charAt(i) ^ providedPassword.charAt(i);
    }

    return result == 0;
}