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/*
* Copyright (c) 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.
*/
import java.io.Serializable;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.Signature;
import java.security.SignedObject;
/*
* @test
* @bug 8050374
* @summary Checks if a signed object is a copy of an original object
*/
public class Copy {
private static final String DSA = "DSA";
private static final int KEY_SIZE = 512;
private static final int MAGIC = 123;
public static void main(String args[]) throws Exception {
KeyPairGenerator kg = KeyPairGenerator.getInstance(DSA);
kg.initialize(KEY_SIZE);
KeyPair kp = kg.genKeyPair();
Signature signature = Signature.getInstance(DSA);
Test original = new Test();
SignedObject so = new SignedObject(original, kp.getPrivate(),
signature);
System.out.println("Signature algorithm: " + so.getAlgorithm());
signature = Signature.getInstance(DSA, "SUN");
if (!so.verify(kp.getPublic(), signature)) {
throw new RuntimeException("Verification failed");
}
kg = KeyPairGenerator.getInstance(DSA);
kg.initialize(KEY_SIZE);
kp = kg.genKeyPair();
if (so.verify(kp.getPublic(), signature)) {
throw new RuntimeException("Unexpected success");
}
Object copy = so.getObject();
if (!original.equals(copy)) {
throw new RuntimeException("Signed object is not equal "
+ "to original one: " + copy);
}
/*
* The signed object is a copy of an original one.
* Once the copy is made, further manipulation
* of the original object shouldn't has any effect on the copy.
*/
original.set(MAGIC - 1);
copy = so.getObject();
if (original.equals(copy)) {
throw new RuntimeException("Signed object is not a copy "
+ "of original one: " + copy);
}
System.out.println("Test passed");
}
private static class Test implements Serializable {
private int number = MAGIC;
public int get() {
return number;
}
public void set(int magic) {
this.number = magic;
}
@Override
public int hashCode() {
return number;
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (!(obj instanceof Test)) {
return false;
}
Test other = (Test) obj;
return number == other.number;
}
@Override
public String toString() {
return "" + number;
}
}
}
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