test/jdk/java/security/AsymmetricKey/GetParams.java

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import jdk.test.lib.Asserts;

import javax.crypto.spec.DHParameterSpec;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.interfaces.DSAParams;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.ECParameterSpec;
import java.security.spec.NamedParameterSpec;

/**
 * @test
 * @bug 8318096
 * @summary Introduce AsymmetricKey interface with a getParams method
 * @library /test/lib
 */

public class GetParams {
    public static void main(String[] args) throws Exception {
        test("DSA", DSAParams.class);
        test("RSA", AlgorithmParameterSpec.class);
        test("RSASSA-PSS", AlgorithmParameterSpec.class);
        test("EC", ECParameterSpec.class);
        test("DH", DHParameterSpec.class);
        test("EdDSA", NamedParameterSpec.class);
        test("XDH", NamedParameterSpec.class);
    }

    static void test(String alg, Class<? extends AlgorithmParameterSpec> clazz)
            throws Exception {
        KeyPairGenerator g = KeyPairGenerator.getInstance(alg);
        KeyPair kp = g.generateKeyPair();
        AlgorithmParameterSpec spec1 = kp.getPrivate().getParams();
        Asserts.assertTrue(spec1 == null || clazz.isAssignableFrom(spec1.getClass()));
        AlgorithmParameterSpec spec2 = kp.getPublic().getParams();
        Asserts.assertTrue(spec2 == null || clazz.isAssignableFrom(spec2.getClass()));
    }
}