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8246077: Cloneable test in HmacCore seems questionable

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Updated java.security.MessageDigest and Signature classes to return Cloneable obj for Cloneable spi obj

Reviewed-by: weijun, xuelei, coffeys
This commit is contained in:
Valerie Peng 2020-06-15 23:30:49 +00:00
parent c55b06a4d5
commit f968f32789
7 changed files with 377 additions and 32 deletions
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86
src/java.base/share/classes/java/security/MessageDigest.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1996, 2019, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1996, 2020, 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
@ -131,6 +131,12 @@ public abstract class MessageDigest extends MessageDigestSpi {
this.algorithm = algorithm;
}
// private constructor used only by Delegate class
private MessageDigest(String algorithm, Provider p) {
this.algorithm = algorithm;
this.provider = p;
}
/**
* Returns a MessageDigest object that implements the specified digest
* algorithm.
@ -178,10 +184,11 @@ public abstract class MessageDigest extends MessageDigestSpi {
(String)null);
if (objs[0] instanceof MessageDigest) {
md = (MessageDigest)objs[0];
md.provider = (Provider)objs[1];
} else {
md = new Delegate((MessageDigestSpi)objs[0], algorithm);
md = Delegate.of((MessageDigestSpi)objs[0], algorithm,
(Provider) objs[1]);
}
md.provider = (Provider)objs[1];
if (!skipDebug && pdebug != null) {
pdebug.println("MessageDigest." + algorithm +
@ -245,8 +252,8 @@ public abstract class MessageDigest extends MessageDigestSpi {
return md;
} else {
MessageDigest delegate =
new Delegate((MessageDigestSpi)objs[0], algorithm);
delegate.provider = (Provider)objs[1];
Delegate.of((MessageDigestSpi)objs[0], algorithm,
(Provider)objs[1]);
return delegate;
}
}
@ -298,8 +305,8 @@ public abstract class MessageDigest extends MessageDigestSpi {
return md;
} else {
MessageDigest delegate =
new Delegate((MessageDigestSpi)objs[0], algorithm);
delegate.provider = (Provider)objs[1];
Delegate.of((MessageDigestSpi)objs[0], algorithm,
(Provider)objs[1]);
return delegate;
}
}
@ -547,8 +554,6 @@ public abstract class MessageDigest extends MessageDigestSpi {
}
/*
* The following class allows providers to extend from MessageDigestSpi
* rather than from MessageDigest. It represents a MessageDigest with an
@ -563,14 +568,45 @@ public abstract class MessageDigest extends MessageDigestSpi {
* and its original parent (Object).
*/
static class Delegate extends MessageDigest implements MessageDigestSpi2 {
private static class Delegate extends MessageDigest
implements MessageDigestSpi2 {
// use this class for spi objects which implements Cloneable
private static final class CloneableDelegate extends Delegate
implements Cloneable {
private CloneableDelegate(MessageDigestSpi digestSpi,
String algorithm, Provider p) {
super(digestSpi, algorithm, p);
}
}
// The provider implementation (delegate)
private MessageDigestSpi digestSpi;
private final MessageDigestSpi digestSpi;
// constructor
public Delegate(MessageDigestSpi digestSpi, String algorithm) {
super(algorithm);
// factory method used by MessageDigest class to create Delegate objs
static Delegate of(MessageDigestSpi digestSpi, String algo,
Provider p) {
Objects.requireNonNull(digestSpi);
boolean isCloneable = (digestSpi instanceof Cloneable);
// Spi impls from SunPKCS11 provider implement Cloneable but their
// clone() may throw CloneNotSupportException
if (isCloneable && p.getName().startsWith("SunPKCS11") &&
p.getClass().getModule().getName().equals
("jdk.crypto.cryptoki")) {
try {
digestSpi.clone();
} catch (CloneNotSupportedException cnse) {
isCloneable = false;
}
}
return (isCloneable? new CloneableDelegate(digestSpi, algo, p) :
new Delegate(digestSpi, algo, p));
}
// private constructor
private Delegate(MessageDigestSpi digestSpi, String algorithm,
Provider p) {
super(algorithm, p);
this.digestSpi = digestSpi;
}
@ -582,17 +618,16 @@ public abstract class MessageDigest extends MessageDigestSpi {
* @throws CloneNotSupportedException if this is called on a
* delegate that does not support {@code Cloneable}.
*/
@Override
public Object clone() throws CloneNotSupportedException {
if (digestSpi instanceof Cloneable) {
MessageDigestSpi digestSpiClone =
(MessageDigestSpi)digestSpi.clone();
if (this instanceof Cloneable) {
// Because 'algorithm', 'provider', and 'state' are private
// members of our supertype, we must perform a cast to
// access them.
MessageDigest that =
new Delegate(digestSpiClone,
((MessageDigest)this).algorithm);
that.provider = ((MessageDigest)this).provider;
MessageDigest that = new CloneableDelegate(
(MessageDigestSpi)digestSpi.clone(),
((MessageDigest)this).algorithm,
((MessageDigest)this).provider);
that.state = ((MessageDigest)this).state;
return that;
} else {
@ -600,22 +635,27 @@ public abstract class MessageDigest extends MessageDigestSpi {
}
}
@Override
protected int engineGetDigestLength() {
return digestSpi.engineGetDigestLength();
}
@Override
protected void engineUpdate(byte input) {
digestSpi.engineUpdate(input);
}
@Override
protected void engineUpdate(byte[] input, int offset, int len) {
digestSpi.engineUpdate(input, offset, len);
}
@Override
protected void engineUpdate(ByteBuffer input) {
digestSpi.engineUpdate(input);
}
@Override
public void engineUpdate(SecretKey key) throws InvalidKeyException {
if (digestSpi instanceof MessageDigestSpi2) {
((MessageDigestSpi2)digestSpi).engineUpdate(key);
@ -624,15 +664,19 @@ public abstract class MessageDigest extends MessageDigestSpi {
("Digest does not support update of SecretKey object");
}
}
@Override
protected byte[] engineDigest() {
return digestSpi.engineDigest();
}
@Override
protected int engineDigest(byte[] buf, int offset, int len)
throws DigestException {
return digestSpi.engineDigest(buf, offset, len);
}
@Override
protected void engineReset() {
digestSpi.engineReset();
}