1 /*

     2  * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.

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

     4  *

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

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

     7  * published by the Free Software Foundation.

     8  *

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

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

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

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

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /**

    25  * @see PublicKeyInterop.sh

    26  */

    27 

    28 import java.security.*;

    29 import java.util.*;

    30 import javax.crypto.*;

    31 

    32 import sun.security.util.HexDumpEncoder;

    33 

    34 /*

    35  * Confirm interoperability of RSA public keys between SunMSCAPI and SunJCE

    36  * security providers.

    37  */

    38 public class PublicKeyInterop {

    39 

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

    41         KeyStore ks = KeyStore.getInstance("Windows-MY");

    42         ks.load(null, null);

    43         System.out.println("Loaded keystore: Windows-MY");

    44 

    45         PublicKey myPuKey =

    46             (PublicKey) ks.getCertificate("6888925").getPublicKey();

    47         System.out.println("Public key is a " + myPuKey.getClass().getName());

    48         PrivateKey myPrKey = (PrivateKey) ks.getKey("6888925", null);

    49         System.out.println("Private key is a " + myPrKey.getClass().getName());

    50         System.out.println();

    51 

    52         byte[] plain = new byte[] {0x01, 0x02, 0x03, 0x04, 0x05};

    53         HexDumpEncoder hde = new HexDumpEncoder();

    54         System.out.println("Plaintext:\n" + hde.encode(plain) + "\n");

    55 

    56         Cipher rsa = Cipher.getInstance("RSA/ECB/PKCS1Padding");

    57         rsa.init(Cipher.ENCRYPT_MODE, myPuKey);

    58         byte[] encrypted = rsa.doFinal(plain);

    59         System.out.println("Encrypted plaintext using RSA Cipher from " +

    60             rsa.getProvider().getName() + " JCE provider\n");

    61         System.out.println(hde.encode(encrypted) + "\n");

    62 

    63         Cipher rsa2 = Cipher.getInstance("RSA/ECB/PKCS1Padding", "SunMSCAPI");

    64         rsa2.init(Cipher.ENCRYPT_MODE, myPuKey);

    65         byte[] encrypted2 = rsa2.doFinal(plain);

    66         System.out.println("Encrypted plaintext using RSA Cipher from " +

    67             rsa2.getProvider().getName() + " JCE provider\n");

    68         System.out.println(hde.encode(encrypted2) + "\n");

    69 

    70         Cipher rsa3 = Cipher.getInstance("RSA/ECB/PKCS1Padding", "SunMSCAPI");

    71         rsa3.init(Cipher.DECRYPT_MODE, myPrKey);

    72         byte[] decrypted = rsa3.doFinal(encrypted);

    73         System.out.println("Decrypted first ciphertext using RSA Cipher from " +

    74             rsa3.getProvider().getName() + " JCE provider\n");

    75         System.out.println(hde.encode(decrypted) + "\n");

    76         if (! Arrays.equals(plain, decrypted)) {

    77             throw new Exception("First decrypted ciphertext does not match " +

    78                 "original plaintext");

    79         }

    80 

    81         decrypted = rsa3.doFinal(encrypted2);

    82         System.out.println("Decrypted second ciphertext using RSA Cipher from "

    83             + rsa3.getProvider().getName() + " JCE provider\n");

    84         System.out.println(hde.encode(decrypted) + "\n");

    85         if (! Arrays.equals(plain, decrypted)) {

    86             throw new Exception("Second decrypted ciphertext does not match " +

    87                 "original plaintext");

    88         }

    89     }

    90 }