(Java) Get Base64 Public Key from Private Key

Demonstrates how to get the public key in base64 format from a private key.

Note: This example requires Chilkat v11.0.0 or greater.

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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[])
  {
    boolean success = false;

    // Load a private key from base64.
    CkBinData bd = new CkBinData();
    success = bd.AppendEncoded("MHQCA....n0Q==","base64");

    CkPrivateKey privKey = new CkPrivateKey();
    success = privKey.LoadAnyFormat(bd,"");
    if (success == false) {
        System.out.println(privKey.lastErrorText());
        return;
        }

    CkPublicKey pubKey = new CkPublicKey();
    privKey.ToPublicKey(pubKey);

    String pubKeyBase64 = pubKey.getEncoded(true,"base64");
    System.out.println(pubKeyBase64);
  }
}