PublicKeyInterop.java

/*
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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
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 * 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 6888925 8180570 8237804
 * @summary SunMSCAPI's Cipher can't use RSA public keys obtained from other sources.
 * @requires os.family == "windows"
 * @library /test/lib
 * @modules java.base/sun.security.util
 */

import java.security.*;
import java.util.*;
import javax.crypto.*;

import jdk.test.lib.SecurityTools;
import jdk.test.lib.hexdump.HexPrinter;

/*
 * Confirm interoperability of RSA public keys between SunMSCAPI and SunJCE
 * security providers.
 */
public class PublicKeyInterop {

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

        cleanup();
        SecurityTools.keytool("-genkeypair",
                "-storetype", "Windows-My",
                "-keyalg", "RSA",
                "-alias", "6888925",
                "-dname", "cn=6888925,c=US",
                "-noprompt").shouldHaveExitValue(0);

        try {
            run();
        } finally {
            cleanup();
        }
    }

    private static void cleanup() {
        try {
            KeyStore ks = KeyStore.getInstance("Windows-MY");
            ks.load(null, null);
            ks.deleteEntry("6888925");
            ks.store(null, null);
        } catch (Exception e) {
            System.out.println("No such entry.");
        }
    }

    static void run() throws Exception {

        KeyStore ks = KeyStore.getInstance("Windows-MY");
        ks.load(null, null);
        System.out.println("Loaded keystore: Windows-MY");

        PublicKey myPuKey = 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};
        HexPrinter hp = HexPrinter.simple();
        System.out.println("Plaintext:\n" + hp.toString(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(hp.toString(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(hp.toString(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(hp.toString(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(hp.toString(decrypted) + "\n");
        if (! Arrays.equals(plain, decrypted)) {
            throw new Exception("Second decrypted ciphertext does not match " +
                "original plaintext");
        }
    }
}