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/*
* Copyright Amazon.com Inc. 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.
*/
/**
* @test
* @bug 8254717 8263404
* @summary isAssignableFrom checks in KeyFactorySpi.engineGetKeySpec appear to be backwards.
* @author Greg Rubin, Ziyi Luo
*/
import java.math.BigInteger;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.interfaces.RSAPrivateCrtKey;
import java.security.interfaces.RSAPrivateKey;
import java.security.spec.*;
public class KeyFactoryGetKeySpecForInvalidSpec {
// Test for 8263404: This method generates RSAPrivateKey (without Crt info) from a RSAPrivateCrtKey
public static RSAPrivateKey privateCrtToPrivate(RSAPrivateCrtKey crtKey) {
return new RSAPrivateKey() {
@Override
public BigInteger getPrivateExponent() {
return crtKey.getPrivateExponent();
}
@Override
public String getAlgorithm() {
return crtKey.getAlgorithm();
}
@Override
public String getFormat() {
return crtKey.getFormat();
}
@Override
public byte[] getEncoded() {
return crtKey.getEncoded();
}
@Override
public BigInteger getModulus() {
return crtKey.getModulus();
}
};
}
public static void main(String[] args) throws Exception {
KeyPairGenerator kg = KeyPairGenerator.getInstance("RSA",
System.getProperty("test.provider.name", "SunRsaSign"));
kg.initialize(2048);
KeyPair pair = kg.generateKeyPair();
KeyFactory factory = KeyFactory.getInstance("RSA");
// === Case 1: private key is RSAPrivateCrtKey, keySpec is RSAPrivateKeySpec
// === Expected: return RSAPrivateCrtKeySpec
// Since RSAPrivateCrtKeySpec inherits from RSAPrivateKeySpec, we'd expect this next line to return an instance of RSAPrivateKeySpec
// (because the private key has CRT parts).
KeySpec spec = factory.getKeySpec(pair.getPrivate(), RSAPrivateKeySpec.class);
if (!(spec instanceof RSAPrivateCrtKeySpec)) {
throw new Exception("Spec should be an instance of RSAPrivateCrtKeySpec");
}
// === Case 2: private key is RSAPrivateCrtKey, keySpec is RSAPrivateCrtKeySpec
// === Expected: return RSAPrivateCrtKeySpec
spec = factory.getKeySpec(pair.getPrivate(), RSAPrivateCrtKeySpec.class);
if (!(spec instanceof RSAPrivateCrtKeySpec)) {
throw new Exception("Spec should be an instance of RSAPrivateCrtKeySpec");
}
// === Case 3: private key is RSAPrivateKey, keySpec is RSAPrivateKeySpec
// === Expected: return RSAPrivateKeySpec not RSAPrivateCrtKeySpec
RSAPrivateKey notCrtKey = privateCrtToPrivate((RSAPrivateCrtKey)pair.getPrivate());
// InvalidKeySpecException should not be thrown
KeySpec notCrtSpec = factory.getKeySpec(notCrtKey, RSAPrivateKeySpec.class);
if (notCrtSpec instanceof RSAPrivateCrtKeySpec) {
throw new Exception("Spec should be an instance of RSAPrivateKeySpec not RSAPrivateCrtKeySpec");
}
if (!(notCrtSpec instanceof RSAPrivateKeySpec)) {
throw new Exception("Spec should be an instance of RSAPrivateKeySpec");
}
// === Case 4: private key is RSAPrivateKey, keySpec is RSAPrivateCrtKeySpec
// === Expected: throw InvalidKeySpecException
try {
factory.getKeySpec(notCrtKey, RSAPrivateCrtKeySpec.class);
throw new Exception("InvalidKeySpecException is expected but not thrown");
} catch (InvalidKeySpecException e) {
// continue;
}
// This next line should give an InvalidKeySpec exception
try {
spec = factory.getKeySpec(pair.getPublic(), FakeX509Spec.class);
throw new Exception("InvalidKeySpecException is expected but not thrown");
} catch (final ClassCastException ex) {
throw new Exception("InvalidKeySpecException is expected ClassCastException is thrown", ex);
} catch (final InvalidKeySpecException ex) {
// Pass
}
}
public static class FakeX509Spec extends X509EncodedKeySpec {
public FakeX509Spec(byte[] encodedKey) {
super(encodedKey);
}
public FakeX509Spec(byte[] encodedKey, String algorithm) {
super(encodedKey, algorithm);
}
}
}
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