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authorTom Tromey <tromey@redhat.com>2005-07-16 01:27:14 +0000
committerTom Tromey <tromey@gcc.gnu.org>2005-07-16 01:27:14 +0000
commitb0fa81eea9a270f23d6ad67ca7a6d25c18d20da1 (patch)
tree8762d1f992e2f725a6bde1ff966ed6f1e5f4f823 /libjava/java/security/MessageDigest.java
parentea54b29342c8506acb4f858c68340c44b72e3532 (diff)
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Major merge with Classpath.
Removed many duplicate files. * HACKING: Updated.x * classpath: Imported new directory. * standard.omit: New file. * Makefile.in, aclocal.m4, configure: Rebuilt. * sources.am: New file. * configure.ac: Run Classpath configure script. Moved code around to support. Disable xlib AWT peers (temporarily). * Makefile.am (SUBDIRS): Added 'classpath' (JAVAC): Removed. (AM_CPPFLAGS): Added more -I options. (BOOTCLASSPATH): Simplified. Completely redid how sources are built. Include sources.am. * include/Makefile.am (tool_include__HEADERS): Removed jni.h. * include/jni.h: Removed (in Classpath). * scripts/classes.pl: Updated to look at built classes. * scripts/makemake.tcl: New file. * testsuite/libjava.jni/jni.exp (gcj_jni_compile_c_to_so): Added -I options. (gcj_jni_invocation_compile_c_to_binary): Likewise. From-SVN: r102082
Diffstat (limited to 'libjava/java/security/MessageDigest.java')
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diff --git a/libjava/java/security/MessageDigest.java b/libjava/java/security/MessageDigest.java
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@@ -1,413 +0,0 @@
-/* MessageDigest.java --- The message digest interface.
- Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath 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 for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-package java.security;
-
-import gnu.java.security.Engine;
-
-/**
- * <p>This <code>MessageDigest</code> class provides applications the
- * functionality of a message digest algorithm, such as <i>MD5</i> or <i>SHA</i>.
- * Message digests are secure one-way hash functions that take arbitrary-sized
- * data and output a fixed-length hash value.</p>
- *
- * <p>A <code>MessageDigest</code> object starts out initialized. The data is
- * processed through it using the <code>update()</code> methods. At any point
- * <code>reset()</code> can be called to reset the digest. Once all the data to
- * be updated has been updated, one of the <code>digest()</code> methods should
- * be called to complete the hash computation.</p>
- *
- * <p>The <code>digest()</code> method can be called <b>once</b> for a given
- * number of updates. After <code>digest()</code> has been called, the
- * <code>MessageDigest</code> object is <b>reset</b> to its initialized state.
- * </p>
- *
- * <p>Implementations are free to implement the {@link Cloneable} interface.
- * Client applications can test cloneability by attempting cloning and catching
- * the {@link CloneNotSupportedException}:
- *
- * <pre>
- * MessageDigest md = MessageDigest.getInstance("SHA");
- * try
- * {
- * md.update(toChapter1);
- * MessageDigest tc1 = md.clone();
- * byte[] toChapter1Digest = tc1.digest();
- * md.update(toChapter2);
- * // ...
- * }
- * catch (CloneNotSupportedException x)
- * {
- * throw new DigestException("couldn't make digest of partial content");
- * }
- * </pre>
- *
- * <p>Note that if a given implementation is not cloneable, it is still possible
- * to compute intermediate digests by instantiating several instances, if the
- * number of digests is known in advance.</p>
- *
- * <p>Note that this class is abstract and extends from {@link MessageDigestSpi}
- * for historical reasons. Application developers should only take notice of the
- * methods defined in this <code>MessageDigest</code> class; all the methods in
- * the superclass are intended for cryptographic service providers who wish to
- * supply their own implementations of message digest algorithms.</p>
- *
- * @see MessageDigestSpi
- * @see Provider
- * @since JDK 1.1
- */
-public abstract class MessageDigest extends MessageDigestSpi
-{
- /** The service name for message digests. */
- private static final String MESSAGE_DIGEST = "MessageDigest";
-
- private String algorithm;
- Provider provider;
- private byte[] lastDigest;
-
- /**
- * Creates a message digest with the specified algorithm name.
- *
- * @param algorithm the standard name of the digest algorithm.
- * See Appendix A in the Java Cryptography Architecture API
- * Specification &amp; Reference for information about standard
- * algorithm names.
- */
- protected MessageDigest(String algorithm)
- {
- this.algorithm = algorithm;
- provider = null;
- }
-
- /**
- * Generates a <code>MessageDigest</code> object that implements the specified
- * digest algorithm. If the default provider package provides an
- * implementation of the requested digest algorithm, an instance of
- * <code>MessageDigest</code> containing that implementation is returned. If
- * the algorithm is not available in the default package, other packages are
- * searched.
- *
- * @param algorithm the name of the algorithm requested. See Appendix A in the
- * Java Cryptography Architecture API Specification &amp; Reference for
- * information about standard algorithm names.
- * @return a Message Digest object implementing the specified algorithm.
- * @throws NoSuchAlgorithmException if the algorithm is not available in the
- * caller's environment.
- */
- public static MessageDigest getInstance(String algorithm)
- throws NoSuchAlgorithmException
- {
- Provider[] p = Security.getProviders();
- for (int i = 0; i < p.length; i++)
- {
- try
- {
- return getInstance(algorithm, p[i]);
- }
- catch (NoSuchAlgorithmException ignored)
- {
- // Ignore.
- }
- }
-
- throw new NoSuchAlgorithmException(algorithm);
- }
-
- /**
- * Generates a <code>MessageDigest</code> object implementing the specified
- * algorithm, as supplied from the specified provider, if such an algorithm is
- * available from the provider.
- *
- * @param algorithm the name of the algorithm requested. See Appendix A in the
- * Java Cryptography Architecture API Specification &amp; Reference for
- * information about standard algorithm names.
- * @param provider the name of the provider.
- * @return a Message Digest object implementing the specified algorithm.
- * @throws NoSuchAlgorithmException if the algorithm is not available in the
- * package supplied by the requested provider.
- * @throws NoSuchProviderException if the provider is not available in the
- * environment.
- * @throws IllegalArgumentException if the provider name is null or empty.
- * @see Provider
- */
- public static MessageDigest getInstance(String algorithm, String provider)
- throws NoSuchAlgorithmException, NoSuchProviderException
- {
- if (provider == null || provider.length() == 0)
- throw new IllegalArgumentException("Illegal provider");
-
- Provider p = Security.getProvider(provider);
- if (p == null)
- throw new NoSuchProviderException(provider);
-
- return getInstance(algorithm, p);
- }
-
- /**
- * Generates a <code>MessageDigest</code> object implementing the specified
- * algorithm, as supplied from the specified provider, if such an algorithm
- * is available from the provider. Note: the provider doesn't have to be
- * registered.
- *
- * @param algorithm the name of the algorithm requested. See Appendix A in
- * the Java Cryptography Architecture API Specification &amp; Reference for
- * information about standard algorithm names.
- * @param provider the provider.
- * @return a Message Digest object implementing the specified algorithm.
- * @throws NoSuchAlgorithmException if the <code>algorithm</code> is not
- * available in the package supplied by the requested <code>provider</code>.
- * @throws IllegalArgumentException if the <code>provider</code> is
- * <code>null</code>.
- * @since 1.4
- * @see Provider
- */
- public static MessageDigest getInstance(String algorithm, Provider provider)
- throws NoSuchAlgorithmException
- {
- if (provider == null)
- throw new IllegalArgumentException("Illegal provider");
-
- MessageDigest result = null;
- Object o = null;
- try
- {
- o = Engine.getInstance(MESSAGE_DIGEST, algorithm, provider);
- }
- catch (java.lang.reflect.InvocationTargetException ite)
- {
- throw new NoSuchAlgorithmException(algorithm);
- }
-
- if (o instanceof MessageDigestSpi)
- {
- result = new DummyMessageDigest((MessageDigestSpi) o, algorithm);
- }
- else if (o instanceof MessageDigest)
- {
- result = (MessageDigest) o;
- result.algorithm = algorithm;
- }
- else
- {
- throw new NoSuchAlgorithmException(algorithm);
- }
- result.provider = provider;
- return result;
- }
-
- /**
- * Returns the provider of this message digest object.
- *
- * @return the provider of this message digest object.
- */
- public final Provider getProvider()
- {
- return provider;
- }
-
- /**
- * Updates the digest using the specified byte.
- *
- * @param input the byte with which to update the digest.
- */
- public void update(byte input)
- {
- engineUpdate(input);
- }
-
- /**
- * Updates the digest using the specified array of bytes, starting at the
- * specified offset.
- *
- * @param input the array of bytes.
- * @param offset the offset to start from in the array of bytes.
- * @param len the number of bytes to use, starting at offset.
- */
- public void update(byte[] input, int offset, int len)
- {
- engineUpdate(input, offset, len);
- }
-
- /**
- * Updates the digest using the specified array of bytes.
- *
- * @param input the array of bytes.
- */
- public void update(byte[] input)
- {
- engineUpdate(input, 0, input.length);
- }
-
- /**
- * Completes the hash computation by performing final operations such as
- * padding. The digest is reset after this call is made.
- *
- * @return the array of bytes for the resulting hash value.
- */
- public byte[] digest()
- {
- return lastDigest = engineDigest();
- }
-
- /**
- * Completes the hash computation by performing final operations such as
- * padding. The digest is reset after this call is made.
- *
- * @param buf An output buffer for the computed digest.
- * @param offset The offset into the output buffer to begin storing the digest.
- * @param len The number of bytes within buf allotted for the digest.
- * @return The number of bytes placed into buf.
- * @throws DigestException if an error occurs.
- */
- public int digest(byte[] buf, int offset, int len) throws DigestException
- {
- return engineDigest(buf, offset, len);
- }
-
- /**
- * Performs a final update on the digest using the specified array of bytes,
- * then completes the digest computation. That is, this method first calls
- * <code>update(input)</code>, passing the input array to the <code>update()
- * </code> method, then calls <code>digest()</code>.
- *
- * @param input the input to be updated before the digest is completed.
- * @return the array of bytes for the resulting hash value.
- */
- public byte[] digest(byte[] input)
- {
- update(input);
- return digest();
- }
-
- /**
- * Returns a string representation of this message digest object.
- *
- * @return a string representation of the object.
- */
- public String toString()
- {
- return (getClass()).getName() + " Message Digest <" + digestToString() + ">";
- }
-
- /**
- * Compares two digests for equality. Does a simple byte compare.
- *
- * @param digesta one of the digests to compare.
- * @param digestb the other digest to compare.
- * @return <code>true</code> if the digests are equal, <code>false</code>
- * otherwise.
- */
- public static boolean isEqual(byte[] digesta, byte[] digestb)
- {
- if (digesta.length != digestb.length)
- return false;
-
- for (int i = digesta.length - 1; i >= 0; --i)
- if (digesta[i] != digestb[i])
- return false;
-
- return true;
- }
-
- /** Resets the digest for further use. */
- public void reset()
- {
- engineReset();
- }
-
- /**
- * Returns a string that identifies the algorithm, independent of
- * implementation details. The name should be a standard Java Security name
- * (such as <code>"SHA"</code>, <code>"MD5"</code>, and so on). See Appendix
- * A in the Java Cryptography Architecture API Specification &amp; Reference
- * for information about standard algorithm names.
- *
- * @return the name of the algorithm.
- */
- public final String getAlgorithm()
- {
- return algorithm;
- }
-
- /**
- * Returns the length of the digest in bytes, or <code>0</code> if this
- * operation is not supported by the provider and the implementation is not
- * cloneable.
- *
- * @return the digest length in bytes, or <code>0</code> if this operation is
- * not supported by the provider and the implementation is not cloneable.
- * @since 1.2
- */
- public final int getDigestLength()
- {
- return engineGetDigestLength();
- }
-
- /**
- * Returns a clone if the implementation is cloneable.
- *
- * @return a clone if the implementation is cloneable.
- * @throws CloneNotSupportedException if this is called on an implementation
- * that does not support {@link Cloneable}.
- */
- public Object clone() throws CloneNotSupportedException
- {
- return super.clone();
- }
-
- private String digestToString()
- {
- byte[] digest = lastDigest;
-
- if (digest == null)
- return "incomplete";
-
- StringBuffer buf = new StringBuffer();
- int len = digest.length;
- for (int i = 0; i < len; ++i)
- {
- byte b = digest[i];
- byte high = (byte) ((b & 0xff) >>> 4);
- byte low = (byte) (b & 0xf);
-
- buf.append(high > 9 ? ('a' - 10) + high : '0' + high);
- buf.append(low > 9 ? ('a' - 10) + low : '0' + low);
- }
-
- return buf.toString();
- }
-}