From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libjava/classpath/javax/crypto/MacSpi.java | 163 +++++++++++++++++++++++++++++ 1 file changed, 163 insertions(+) create mode 100644 libjava/classpath/javax/crypto/MacSpi.java (limited to 'libjava/classpath/javax/crypto/MacSpi.java') diff --git a/libjava/classpath/javax/crypto/MacSpi.java b/libjava/classpath/javax/crypto/MacSpi.java new file mode 100644 index 000000000..a03aa6983 --- /dev/null +++ b/libjava/classpath/javax/crypto/MacSpi.java @@ -0,0 +1,163 @@ +/* MacSpi.java -- The MAC service provider interface. + Copyright (C) 2004 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 javax.crypto; + +import java.nio.ByteBuffer; +import java.security.InvalidAlgorithmParameterException; +import java.security.InvalidKeyException; +import java.security.Key; +import java.security.spec.AlgorithmParameterSpec; + +/** + * This is the Service Provider Interface (SPI) for the + * {@link Mac} class. + * + *

Providers wishing to implement a Mac must subclass this class and + * provide appropriate implementations of all its abstract methods, + * then provide an entry pointing to this implementation in the master + * {@link java.security.Provider} class. + * + *

Implementations may optionally implement the {@link + * java.lang.Cloneable} interface. + * + * @author Casey Marshall (csm@gnu.org) + * @since 1.4 + */ +public abstract class MacSpi +{ + + // Constructor. + // ------------------------------------------------------------------------ + + /** + * Create a new MacSpi instance. + */ + public MacSpi() + { + } + + // Instance methods. + // ------------------------------------------------------------------------ + + /** + * Returns a clone of this instance if cloning is supported. + * + * @return A clone of this instance. + * @throws java.lang.CloneNotSupportedException If this instance does + * not support cloneing. + */ + public Object clone() throws CloneNotSupportedException + { + return super.clone(); + } + + // Abstract instance methods. + // ------------------------------------------------------------------------ + + /** + * Finalize the computation of this MAC and return the result as a + * byte array. + * + * @return The MAC. + */ + protected abstract byte[] engineDoFinal(); + + /** + * Return the total length, in bytes, of the computed MAC (the length + * of the byte array returned by {@link #doFinal()}. + * + * @return The MAC length. + */ + protected abstract int engineGetMacLength(); + + /** + * Initialize (or re-initialize) this instance. + * + * @param key The key to use. + * @param params The parameters to use. + * @throws java.security.InvalidAlgorithmParameterException If this + * instance rejects the specified parameters. + * @throws java.security.InvalidKeyException If this instance rejects + * the specified key. + */ + protected abstract void engineInit(Key key, AlgorithmParameterSpec params) + throws InvalidAlgorithmParameterException, InvalidKeyException; + + /** + * Reset this instance. After this method succeeds, the state of this + * instance should be the same as it was before any data was input + * (possibly after a call to {@link + * #init(java.security.Key,java.security.spec.AlgorithmParameterSpec)}, + * possibly not). + */ + protected abstract void engineReset(); + + /** + * Update this MAC with a single byte. + * + * @param input The next byte. + */ + protected abstract void engineUpdate(byte input); + + /** + * Update this MAC with a portion of a byte array. + * + * @param input The next bytes. + * @param offset The index in input at which to start. + * @param length The number of bytes to update. + */ + protected abstract void engineUpdate(byte[] input, int offset, int length); + + /** + * Update this MAC with the remaining bytes of a buffer. + * + * @param buffer The input buffer. + * @since 1.5 + */ + protected void engineUpdate (final ByteBuffer buffer) + { + byte[] buf = new byte[1024]; + while (buffer.hasRemaining ()) + { + int n = Math.min (buffer.remaining (), buf.length); + buffer.get (buf, 0, n); + engineUpdate (buf, 0, n); + } + } +} -- cgit v1.2.3