author | iris |
Wed, 20 Jan 2016 11:02:36 -0800 | |
changeset 35302 | e4d2275861c3 |
parent 32646 | db7c5592a47f |
child 37909 | 38b1efe33344 |
permissions | -rw-r--r-- |
27182 | 1 |
/* |
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package com.oracle.security.ucrypto; |
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import java.lang.ref.*; |
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import java.io.ByteArrayOutputStream; |
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import java.util.*; |
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import java.util.concurrent.ConcurrentSkipListSet; |
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import java.security.*; |
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/** |
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* MessageDigest implementation class. This class currently supports |
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* MD5, SHA1, SHA256, SHA384, and SHA512 |
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* |
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35302
e4d2275861c3
8136494: Update "@since 1.9" to "@since 9" to match java.version.specification
iris
parents:
32646
diff
changeset
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* @since 9 |
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*/ |
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public abstract class NativeDigest extends MessageDigestSpi |
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implements Cloneable { |
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private static final int MECH_MD5 = 1; |
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private static final int MECH_SHA1 = 2; |
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private static final int MECH_SHA256 = 3; |
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private static final int MECH_SHA224 = 4; |
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private static final int MECH_SHA384 = 5; |
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private static final int MECH_SHA512 = 6; |
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private final int digestLen; |
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private final int mech; |
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// field for ensuring native memory is freed |
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private DigestContextRef pCtxt = null; |
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private static class DigestContextRef extends PhantomReference<NativeDigest> |
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implements Comparable<DigestContextRef> { |
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private static ReferenceQueue<NativeDigest> refQueue = |
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new ReferenceQueue<NativeDigest>(); |
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// Needed to keep these references from being GC'ed until when their |
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// referents are GC'ed so we can do post-mortem processing |
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private static Set<DigestContextRef> refList = |
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new ConcurrentSkipListSet<DigestContextRef>(); |
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// Collections.synchronizedSortedSet(new TreeSet<DigestContextRef>()); |
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private final long id; |
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private final int mech; |
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private static void drainRefQueueBounded() { |
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while (true) { |
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DigestContextRef next = (DigestContextRef) refQueue.poll(); |
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if (next == null) break; |
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next.dispose(true); |
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} |
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} |
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DigestContextRef(NativeDigest nc, long id, int mech) { |
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super(nc, refQueue); |
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this.id = id; |
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this.mech = mech; |
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refList.add(this); |
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UcryptoProvider.debug("Resource: track Digest Ctxt " + this.id); |
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drainRefQueueBounded(); |
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} |
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public int compareTo(DigestContextRef other) { |
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if (this.id == other.id) { |
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return 0; |
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} else { |
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return (this.id < other.id) ? -1 : 1; |
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} |
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} |
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void dispose(boolean needFree) { |
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refList.remove(this); |
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try { |
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if (needFree) { |
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UcryptoProvider.debug("Resource: free Digest Ctxt " + this.id); |
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NativeDigest.nativeFree(mech, id); |
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} else UcryptoProvider.debug("Resource: stop tracking Digest Ctxt " + this.id); |
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} finally { |
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this.clear(); |
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} |
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} |
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} |
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NativeDigest(int mech, int digestLen) { |
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this.digestLen = digestLen; |
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this.mech = mech; |
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} |
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// see JCA spec |
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protected int engineGetDigestLength() { |
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return digestLen; |
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} |
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// see JCA spec |
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protected synchronized void engineReset() { |
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if (pCtxt != null) { |
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pCtxt.dispose(true); |
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pCtxt = null; |
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} |
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} |
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// see JCA spec |
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protected synchronized byte[] engineDigest() { |
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byte[] digest = new byte[digestLen]; |
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try { |
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int len = engineDigest(digest, 0, digestLen); |
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if (len != digestLen) { |
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32646
db7c5592a47f
8133535: Better exception messaging in Ucrypto code
coffeys
parents:
27182
diff
changeset
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throw new UcryptoException("Digest length mismatch." + |
db7c5592a47f
8133535: Better exception messaging in Ucrypto code
coffeys
parents:
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diff
changeset
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" Len: " + len + ". digestLen: " + digestLen); |
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} |
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return digest; |
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} catch (DigestException de) { |
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throw new UcryptoException("Internal error", de); |
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} |
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} |
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// see JCA spec |
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protected synchronized int engineDigest(byte[] out, int ofs, int len) |
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throws DigestException { |
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if (len < digestLen) { |
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throw new DigestException("Output buffer must be at least " + |
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32646
db7c5592a47f
8133535: Better exception messaging in Ucrypto code
coffeys
parents:
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diff
changeset
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digestLen + " bytes long. Got: " + len); |
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} |
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if ((ofs < 0) || (len < 0) || (ofs > out.length - len)) { |
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32646
db7c5592a47f
8133535: Better exception messaging in Ucrypto code
coffeys
parents:
27182
diff
changeset
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throw new DigestException("Buffer too short to store digest. " + |
db7c5592a47f
8133535: Better exception messaging in Ucrypto code
coffeys
parents:
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diff
changeset
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"ofs: " + ofs + ". len: " + len + ". out.length: " + out.length); |
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} |
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if (pCtxt == null) { |
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pCtxt = new DigestContextRef(this, nativeInit(mech), mech); |
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} |
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try { |
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int status = nativeDigest(mech, pCtxt.id, out, ofs, digestLen); |
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if (status != 0) { |
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throw new DigestException("Internal error: " + status); |
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} |
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} finally { |
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pCtxt.dispose(false); |
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pCtxt = null; |
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} |
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return digestLen; |
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} |
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// see JCA spec |
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protected synchronized void engineUpdate(byte in) { |
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byte[] temp = { in }; |
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engineUpdate(temp, 0, 1); |
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} |
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// see JCA spec |
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protected synchronized void engineUpdate(byte[] in, int ofs, int len) { |
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if (len == 0) { |
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return; |
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} |
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if ((ofs < 0) || (len < 0) || (ofs > in.length - len)) { |
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32646
db7c5592a47f
8133535: Better exception messaging in Ucrypto code
coffeys
parents:
27182
diff
changeset
|
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throw new ArrayIndexOutOfBoundsException("ofs: " + ofs + ". len: " |
db7c5592a47f
8133535: Better exception messaging in Ucrypto code
coffeys
parents:
27182
diff
changeset
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+ len + ". in.length: " + in.length); |
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} |
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if (pCtxt == null) { |
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pCtxt = new DigestContextRef(this, nativeInit(mech), mech); |
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} |
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nativeUpdate(mech, pCtxt.id, in, ofs, len); |
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} |
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/** |
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* Clone this digest. |
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*/ |
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public synchronized Object clone() throws CloneNotSupportedException { |
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NativeDigest copy = (NativeDigest) super.clone(); |
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// re-work the fields that cannot be copied over |
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if (pCtxt != null) { |
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copy.pCtxt = new DigestContextRef(this, nativeClone(mech, pCtxt.id), mech); |
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} |
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return copy; |
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} |
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// return pointer to the context |
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protected static native long nativeInit(int mech); |
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// return status code; always 0 |
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protected static native int nativeUpdate(int mech, long pCtxt, byte[] in, int ofs, int inLen); |
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// return status code; always 0 |
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protected static native int nativeDigest(int mech, long pCtxt, byte[] out, int ofs, int digestLen); |
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// return pointer to the duplicated context |
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protected static native long nativeClone(int mech, long pCtxt); |
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// free the specified context |
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private native static void nativeFree(int mech, long id); |
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public static final class MD5 extends NativeDigest { |
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public MD5() { |
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super(MECH_MD5, 16); |
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} |
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} |
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public static final class SHA1 extends NativeDigest { |
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public SHA1() { |
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super(MECH_SHA1, 20); |
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} |
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} |
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public static final class SHA256 extends NativeDigest { |
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public SHA256() { |
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super(MECH_SHA256, 32); |
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} |
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} |
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public static final class SHA384 extends NativeDigest { |
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public SHA384() { |
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super(MECH_SHA384, 48); |
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} |
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} |
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public static final class SHA512 extends NativeDigest { |
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public SHA512() { |
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super(MECH_SHA512, 64); |
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} |
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} |
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} |