(Java) Load an Ed25519 Private Key from Hex

Demonstrates how to load an Ed25519 private key from raw hex bytes.

Note: This example requires Chilkat v9.5.0.83 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[])
  {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkPrivateKey privKey = new CkPrivateKey();

    // We have the hexidecimal encoded bytes of the private key and public key:
    String privKeyHex = "d4ee72dbf913584ad5b6d8f1f769f8ad3afe7c28cbf1d4fbe097a88f44755842";
    String pubKeyHex = "19bf44096984cdfe8541bac167dc3b96c85086aa30b6b6cb0c5c38ad703166e1";

    // Load these values into the Chilkat private key object:
    boolean success = privKey.LoadEd25519(privKeyHex,pubKeyHex);
    if (success == false) {
        System.out.println(privKey.lastErrorText());
        return;
        }

    // ---------------------------------------------------------------
    // We don't actually need the public key.  If we pass an empty string for the public key,
    // Chilkat will automatically compute it.
    CkPrivateKey privKey2 = new CkPrivateKey();
    success = privKey2.LoadEd25519(privKeyHex,"");

    // Let's get the public key to see that it computed the same value.
    CkStringBuilder sbPubKeyHex = new CkStringBuilder();
    privKeyHex = privKey2.getRawHex(sbPubKeyHex);
    System.out.println("computed public key = " + sbPubKeyHex.getAsString());

    // The output should be:
    // computed public key = 19bf44096984cdfe8541bac167dc3b96c85086aa30b6b6cb0c5c38ad703166e1
  }
}