(Java) Generate an Ed25519 Key Pair

Demonstrates how to generate a new Ed25519 public/private key pair.

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.

    CkEdDSA eddsa = new CkEdDSA();
    CkPrng prng = new CkPrng();
    CkPrivateKey privKey = new CkPrivateKey();

    // Generates a new eddsa key and stores it in privKey.
    boolean success = eddsa.GenEd25519Key(prng,privKey);
    if (success == false) {
        System.out.println(eddsa.lastErrorText());
        return;
        }

    // Examine the ed25519 key in JWK format;
    String jwk = privKey.getJwk();

    CkJsonObject json = new CkJsonObject();
    json.Load(jwk);
    json.put_EmitCompact(false);
    System.out.println(json.emit());

    // Sample output:
    // {
    //   "kty": "OKP",
    //   "crv": "Ed25519",
    //   "x": "SE2Kne5xt51z1eciMH2T2ftDQp96Gl6FhY6zSQujiP0",
    //   "d": "O-eRXewadF0sNyB0U9omcnt8Qg2ZmeK3WSXPYgqe570",
    //   "use": "sig"
    // }

    // In the above JWK, x is the public key, y is the private key.
    // Both are 32 bytes and are base64-url encoded.
  }
}