Key Generator Mac : Key Generator « Security « Java

Key Generator Mac


import javax.crypto.KeyGenerator;
import javax.crypto.Mac;
import javax.crypto.SecretKey;

public class MainClass {
  public static void main(String args[]) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
    String inputString = "";

    KeyGenerator keyGen = KeyGenerator.getInstance("HmacMD5");
    SecretKey secretKey = keyGen.generateKey();

    Mac mac = Mac.getInstance(secretKey.getAlgorithm());

    byte[] byteData = inputString.getBytes("UTF8");

    byte[] macBytes = mac.doFinal(byteData);

    String macAsString = new sun.misc.BASE64Encoder().encode(macBytes);

    System.out.println("Authentication code is: " + macAsString);
  1,198 k)

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