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/*
* Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
* 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.
*
* 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @see PublicKeyInterop.sh
*/
import java.security.*;
import java.util.*;
import javax.crypto.*;
import sun.misc.HexDumpEncoder;
/*
* Confirm interoperability of RSA public keys between SunMSCAPI and SunJCE
* security providers.
*/
public class PublicKeyInterop {
public static void main(String[] arg) throws Exception {
KeyStore ks = KeyStore.getInstance("Windows-MY");
ks.load(null, null);
System.out.println("Loaded keystore: Windows-MY");
PublicKey myPuKey =
(PublicKey) ks.getCertificate("6888925").getPublicKey();
System.out.println("Public key is a " + myPuKey.getClass().getName());
PrivateKey myPrKey = (PrivateKey) ks.getKey("6888925", null);
System.out.println("Private key is a " + myPrKey.getClass().getName());
System.out.println();
byte[] plain = new byte[] {0x01, 0x02, 0x03, 0x04, 0x05};
HexDumpEncoder hde = new HexDumpEncoder();
System.out.println("Plaintext:\n" + hde.encode(plain) + "\n");
Cipher rsa = Cipher.getInstance("RSA/ECB/PKCS1Padding");
rsa.init(Cipher.ENCRYPT_MODE, myPuKey);
byte[] encrypted = rsa.doFinal(plain);
System.out.println("Encrypted plaintext using RSA Cipher from " +
rsa.getProvider().getName() + " JCE provider\n");
System.out.println(hde.encode(encrypted) + "\n");
Cipher rsa2 = Cipher.getInstance("RSA/ECB/PKCS1Padding", "SunMSCAPI");
rsa2.init(Cipher.ENCRYPT_MODE, myPuKey);
byte[] encrypted2 = rsa2.doFinal(plain);
System.out.println("Encrypted plaintext using RSA Cipher from " +
rsa2.getProvider().getName() + " JCE provider\n");
System.out.println(hde.encode(encrypted2) + "\n");
Cipher rsa3 = Cipher.getInstance("RSA/ECB/PKCS1Padding", "SunMSCAPI");
rsa3.init(Cipher.DECRYPT_MODE, myPrKey);
byte[] decrypted = rsa3.doFinal(encrypted);
System.out.println("Decrypted first ciphertext using RSA Cipher from " +
rsa3.getProvider().getName() + " JCE provider\n");
System.out.println(hde.encode(decrypted) + "\n");
if (! Arrays.equals(plain, decrypted)) {
throw new Exception("First decrypted ciphertext does not match " +
"original plaintext");
}
decrypted = rsa3.doFinal(encrypted2);
System.out.println("Decrypted second ciphertext using RSA Cipher from "
+ rsa3.getProvider().getName() + " JCE provider\n");
System.out.println(hde.encode(decrypted) + "\n");
if (! Arrays.equals(plain, decrypted)) {
throw new Exception("Second decrypted ciphertext does not match " +
"original plaintext");
}
}
}
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