TS3 channel password hashing algorithm in Java

ChannelPasswordTest.java

import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Base64;

public final class ChannelPasswordTest {

	private static final String PASSWORD = "Testificate";
	private static final String KEYPAIR = "MG0DAgeAAgEgAiBHF7Me8LnrIDDDs+M+7HzWOB6GlVBCICOD82dH3q1LDQIgGP2zYHxKbvA7NvCk2sLXr3k/+fHR+RNNGaNaUCPZ0jQCIAOR+91qkDvwc3nZ7yTrVwPBMaoynnqb5AP1x2HWpIP9";
	private static final String TARGET = "2YalQTjyjAY728jPorU9A36YLEI=";
	private static final Base64.Encoder B_64_ENCODER = Base64.getEncoder();

	public static void main(String[] args) {
		byte[] pwdHash = sha1Digest(PASSWORD.getBytes(StandardCharsets.UTF_8));
		String pwdBase64 = B_64_ENCODER.encodeToString(pwdHash);
		String joined = pwdBase64 + KEYPAIR;

		byte[] joinedHash = sha1Digest(joined.getBytes(StandardCharsets.UTF_8));
		String joinedBase64 = B_64_ENCODER.encodeToString(joinedHash);
		System.out.println("EXPECTED: " + TARGET);
		System.out.println("ACTUAL:   " + joinedBase64);

		/*
		 * Output:
		 * EXPECTED: 2YalQTjyjAY728jPorU9A36YLEI=
		 * ACTUAL:   2YalQTjyjAY728jPorU9A36YLEI=
		 */
	}

	private static byte[] sha1Digest(byte[] input) {
		try {
			return MessageDigest.getInstance("SHA-1").digest(input);
		} catch (NoSuchAlgorithmException e) {
			System.err.println("Error: Your computer doesn't support SHA-1 (O.o)");
			throw new RuntimeException(e);
		}
	}
}