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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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/**
 * @test
 * @bug 6405536
 * @summary Verify that we can use ECGenParameterSpec
 * @author Andreas Sterbenz
 * @library ..
 */

import java.util.*;

import java.security.*;
import java.security.spec.*;
import java.security.interfaces.ECPublicKey;

public class TestECGenSpec extends PKCS11Test {

    public static void main(String[] args) throws Exception {
        main(new TestECGenSpec());
    }

    public void main(Provider p) throws Exception {
        if (p.getService("Signature", "SHA1withECDSA") == null) {
            System.out.println("Provider does not support ECDSA, skipping...");
            return;
        }

        String[] names = { "NIST P-192", "sect163k1", "1.3.132.0.26", "X9.62 c2tnb239v1"};
        int[] lengths = {192, 163, 233, 239};
        for (int i = 0; i < names.length; i++) {
            String name = names[i];
            int len = lengths[i];
            System.out.println("Testing " + name + "...");
            ECGenParameterSpec spec = new ECGenParameterSpec(name);

            AlgorithmParameters algParams = AlgorithmParameters.getInstance("EC", p);
            algParams.init(spec);
            ECParameterSpec ecSpec = algParams.getParameterSpec(ECParameterSpec.class);
            System.out.println(ecSpec);
            // no public API to get the curve name, so rely on toString();
            if (ecSpec.toString().contains(name) == false) {
                throw new Exception("wrong curve");
            }

            algParams = AlgorithmParameters.getInstance("EC", p);
            algParams.init(ecSpec);
            ECGenParameterSpec genSpec = algParams.getParameterSpec(ECGenParameterSpec.class);
            System.out.println(genSpec.getName());

            KeyPairGenerator kpg = KeyPairGenerator.getInstance("EC", p);
            kpg.initialize(spec);
            KeyPair kp = kpg.generateKeyPair();
            System.out.println(kp.getPrivate());
            ECPublicKey publicKey = (ECPublicKey)kp.getPublic();
            if (publicKey.getParams().getCurve().getField().getFieldSize() != len) {
                throw new Exception("wrong curve");
            }
            System.out.println();
        }
    }

}