(Java) HMAC MD5 to Match RFC 2022 Test Vectors

Demonstrates using Chilkat in Java to computer HMAC MD5 message authentication codes to match the test vectors given by RFC 2202.

Chilkat Java Downloads Java Libs for Windows, MacOS, Linux, Alpine Linux, Solaris Java Libs for Android

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkCrypt2 crypt = new CkCrypt2();

    // The output will be Hex, so set the EncodingMode:
    crypt.put_EncodingMode("hex");

    // Set the hash algorithm:
    // Choices are: md5, sha-1, sha256, sha384, sha512, md2, haval
    crypt.put_HashAlgorithm("md5");

    String mac;

    // Set the HMAC key:
    crypt.SetHmacKeyEncoded("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b","hex");
    mac = crypt.hmacStringENC("Hi There");
    System.out.println(mac);

    crypt.SetHmacKeyEncoded("Jefe","ansi");
    mac = crypt.hmacStringENC("what do ya want for nothing?");
    System.out.println(mac);
  }
}