/*

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

 *

 * This code is free software; you can redistribute it and/or modify it

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

 * published by the Free Software Foundation.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the LICENSE file that accompanied this code.

 *

 * 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).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package sun.security.mscapi;

import java.security.AccessController;

import java.security.PrivilegedAction;

import java.security.Provider;

import java.security.ProviderException;

import java.util.HashMap;

import java.util.Map;

import sun.security.action.PutAllAction;

/**

 * A Cryptographic Service Provider for the Microsoft Crypto API.

 *

 * @since 1.6

 */

public final class SunMSCAPI extends Provider {

    private static final long serialVersionUID = 8622598936488630849L; //TODO

    private static final String INFO = "Sun's Microsoft Crypto API provider";

    static {

        AccessController.doPrivileged(new PrivilegedAction<Void>() {

            public Void run() {

                System.loadLibrary("sunmscapi");

                return null;

            }

        });

    }

    public SunMSCAPI() {

        super("SunMSCAPI", 1.7d, INFO);

        // if there is no security manager installed, put directly into

        // the provider. Otherwise, create a temporary map and use a

        // doPrivileged() call at the end to transfer the contents

        final Map map = (System.getSecurityManager() == null)

                        ? (Map)this : new HashMap();

        /*

         * Secure random

         */

        map.put("SecureRandom.Windows-PRNG", "sun.security.mscapi.PRNG");

        /*

         * Key store

         */

        map.put("KeyStore.Windows-MY", "sun.security.mscapi.KeyStore$MY");

        map.put("KeyStore.Windows-ROOT", "sun.security.mscapi.KeyStore$ROOT");

        /*

         * Signature engines

         */

        map.put("Signature.SHA1withRSA",

            "sun.security.mscapi.RSASignature$SHA1");

        map.put("Signature.MD5withRSA",

            "sun.security.mscapi.RSASignature$MD5");

        map.put("Signature.MD2withRSA",

            "sun.security.mscapi.RSASignature$MD2");

        // supported key classes

        map.put("Signature.SHA1withRSA SupportedKeyClasses",

            "sun.security.mscapi.Key");

        map.put("Signature.MD5withRSA SupportedKeyClasses",

            "sun.security.mscapi.Key");

        map.put("Signature.MD2withRSA SupportedKeyClasses",

            "sun.security.mscapi.Key");

        map.put("Signature.NONEwithRSA SupportedKeyClasses",

            "sun.security.mscapi.Key");

        /*

         * Key Pair Generator engines

         */

        map.put("KeyPairGenerator.RSA",

            "sun.security.mscapi.RSAKeyPairGenerator");

        map.put("KeyPairGenerator.RSA KeySize", "1024");

        /*

         * Cipher engines

         */

        map.put("Cipher.RSA", "sun.security.mscapi.RSACipher");

        map.put("Cipher.RSA/ECB/PKCS1Padding",

            "sun.security.mscapi.RSACipher");

        map.put("Cipher.RSA SupportedModes", "ECB");

        map.put("Cipher.RSA SupportedPaddings", "PKCS1PADDING");

        map.put("Cipher.RSA SupportedKeyClasses", "sun.security.mscapi.Key");

        if (map != this) {

            AccessController.doPrivileged(new PutAllAction(this, map));

        }

    }

    // set to true once self verification is complete

    private static volatile boolean integrityVerified;

    static void verifySelfIntegrity(Class c) {

        if (integrityVerified) {

            return;

        }

        doVerifySelfIntegrity(c);

    }

    private static synchronized void doVerifySelfIntegrity(Class c) {

        integrityVerified = JarVerifier.verify(c);

        if (integrityVerified == false) {

            throw new ProviderException

                ("The SunMSCAPI provider may have been tampered with.");

        }

    }

}