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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * 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 8359388 8368984
 * @summary test that the Cipher.getInstance() would reject improper
 *     transformations with empty mode and/or padding.
 */

import java.security.NoSuchAlgorithmException;
import java.security.Provider;
import java.security.Security;
import javax.crypto.Cipher;

public class TestEmptyModePadding {

    public static void main(String[] args) throws Exception {
        Provider provider = Security.getProvider(
                System.getProperty("test.provider.name", "SunJCE"));

        System.out.println("Testing against " + provider.getName());

        String[] testTransformations = {
            // transformations w/ only 1 component, i.e. algo
            " ",
            // transformations w/ only 2 components
            "AES/",
            "AES/ ",
            "AES/CBC",
            "PBEWithHmacSHA512/224AndAES_128/",
            "PBEWithHmacSHA512/256AndAES_128/ ",
            "PBEWithHmacSHA512/224AndAES_128/CBC",
            // 3-component transformations w/ empty component(s)
            "AES//",
            "AES/ /",
            "AES// ",
            "AES/ / ",
            "AES/CBC/", "AES/CBC/ ",
            "AES//PKCS5Padding", "AES/ /NoPadding",
            "PBEWithHmacSHA512/224AndAES_128//",
            "PBEWithHmacSHA512/224AndAES_128/ /",
            "PBEWithHmacSHA512/224AndAES_128// ",
            "PBEWithHmacSHA512/224AndAES_128/ / ",
            "PBEWithHmacSHA512/256AndAES_128/CBC/",
            "PBEWithHmacSHA512/256AndAES_128/CBC/ ",
            "PBEWithHmacSHA512/256AndAES_128//PKCS5Padding",
            "PBEWithHmacSHA512/256AndAES_128/ /PKCS5Padding",
            // 4 or more components transformations
            "PBEWithHmacSHA512///PKCS5Padding",
            "AES/GCM/NoPadding///",
        };

        for (String t : testTransformations) {
            test(t, provider);
        }
    }

    private static void test(String t, Provider p) throws Exception {
        try {
            Cipher c = Cipher.getInstance(t, p);
            throw new RuntimeException("Should throw NSAE for \'" + t + "\'");
        } catch (NoSuchAlgorithmException nsae) {
            // transformation info is already in the NSAE message
            System.out.println("Expected NSAE: " + nsae.getMessage());
        }
    }
}