/*

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * 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 8138766

 * @summary New default -sigalg for keytool

 * @modules java.base/sun.security.tools.keytool

 */

import sun.security.tools.keytool.Main;

import java.io.File;

import java.security.KeyStore;

import java.security.cert.X509Certificate;

public class DefaultSignatureAlgorithm {

    private static int counter = 0;

    public static void main(String[] args) throws Exception {

        // Calculating large RSA keys are too slow.

        run("RSA", 1024, null, "SHA256withRSA");

        run("RSA", 3072, null, "SHA256withRSA");

        run("RSA", 3073, null, "SHA384withRSA");

        run("DSA", 1024, null, "SHA256withDSA");

        run("DSA", 3072, null, "SHA256withDSA");

        run("EC", 192, null, "SHA256withECDSA");

        run("EC", 384, null, "SHA384withECDSA");

        run("EC", 571, null, "SHA512withECDSA");

        // If you specify one, it will be used.

        run("EC", 571, "SHA256withECDSA", "SHA256withECDSA");

    }

    private static void run(String keyAlg, int keySize,

                    String sigAlg, String expectedSigAlg) throws Exception {

        String alias = keyAlg + keySize + (counter++);

        String cmd = "-keystore ks -storepass changeit" +

                " -keypass changeit -alias " + alias +

                " -keyalg " + keyAlg + " -keysize " + keySize +

                " -genkeypair -dname CN=" + alias + " -debug";

        if (sigAlg != null) {

            cmd += " -sigalg " + sigAlg;

        }

        Main.main(cmd.split(" "));

        KeyStore ks = KeyStore.getInstance(

                new File("ks"), "changeit".toCharArray());

        X509Certificate cert = (X509Certificate)ks.getCertificate(alias);

        String actualSigAlg = cert.getSigAlgName();

        if (!actualSigAlg.equals(expectedSigAlg)) {

            throw new Exception("Failure at " + alias + ": expected "

                    + expectedSigAlg + ", actually " + actualSigAlg);

        }

    }

}