6618658: Deserialization allows creation of mutable SignedObject
Reviewed-by: hawtin, mullan
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/*
* @test
* @bug 6618658
* @summary Deserialization allows creation of mutable SignedObject
*/
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.Signature;
import java.security.SignedObject;
public class Correctness {
public static void main(String[] args) throws Exception {
String SIGALG = "SHA1withRSA";
KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
KeyPair kp = kpg.generateKeyPair();
SignedObject so1 = new SignedObject("Hello", kp.getPrivate(),
Signature.getInstance(SIGALG));
ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(byteOut);
out.writeObject(so1);
out.close();
byte[] data = byteOut.toByteArray();
SignedObject so2 = (SignedObject)new ObjectInputStream(
new ByteArrayInputStream(data)).readObject();
if (!so2.getObject().equals("Hello")) {
throw new Exception("Content changed");
}
if (!so2.getAlgorithm().equals(SIGALG)) {
throw new Exception("Signature algorithm unknown");
}
if (!so2.verify(kp.getPublic(), Signature.getInstance(SIGALG))) {
throw new Exception("Not verified");
}
}
}