From b0fa81eea9a270f23d6ad67ca7a6d25c18d20da1 Mon Sep 17 00:00:00 2001 From: Tom Tromey Date: Sat, 16 Jul 2005 01:27:14 +0000 Subject: 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 --- libjava/java/security/MessageDigest.java | 413 ------------------------------- 1 file changed, 413 deletions(-) delete mode 100644 libjava/java/security/MessageDigest.java (limited to 'libjava/java/security/MessageDigest.java') diff --git a/libjava/java/security/MessageDigest.java b/libjava/java/security/MessageDigest.java deleted file mode 100644 index 8684f20..0000000 --- a/libjava/java/security/MessageDigest.java +++ /dev/null @@ -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; - -/** - *

This MessageDigest class provides applications the - * functionality of a message digest algorithm, such as MD5 or SHA. - * Message digests are secure one-way hash functions that take arbitrary-sized - * data and output a fixed-length hash value.

- * - *

A MessageDigest object starts out initialized. The data is - * processed through it using the update() methods. At any point - * reset() can be called to reset the digest. Once all the data to - * be updated has been updated, one of the digest() methods should - * be called to complete the hash computation.

- * - *

The digest() method can be called once for a given - * number of updates. After digest() has been called, the - * MessageDigest object is reset to its initialized state. - *

- * - *

Implementations are free to implement the {@link Cloneable} interface. - * Client applications can test cloneability by attempting cloning and catching - * the {@link CloneNotSupportedException}: - * - * 

- *    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");
- *      }
- *
- * - *

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.

- * - *

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 MessageDigest class; all the methods in - * the superclass are intended for cryptographic service providers who wish to - * supply their own implementations of message digest algorithms.

- * - * @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 & Reference for information about standard - * algorithm names. - */ - protected MessageDigest(String algorithm) - { - this.algorithm = algorithm; - provider = null; - } - - /** - * Generates a MessageDigest object that implements the specified - * digest algorithm. If the default provider package provides an - * implementation of the requested digest algorithm, an instance of - * MessageDigest 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 & 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 MessageDigest 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 & 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 MessageDigest 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 & Reference for - * information about standard algorithm names. - * @param provider 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 IllegalArgumentException if the provider is - * null. - * @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 - * update(input), passing the input array to the update() - * method, then calls digest(). - * - * @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 true if the digests are equal, false - * 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 "SHA", "MD5", and so on). See Appendix - * A in the Java Cryptography Architecture API Specification & 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 0 if this - * operation is not supported by the provider and the implementation is not - * cloneable. - * - * @return the digest length in bytes, or 0 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(); - } -} -- cgit v1.1