Imported GNU Classpath 0.90
Imported GNU Classpath 0.90
* scripts/makemake.tcl: Set gnu/java/awt/peer/swing to ignore.
* gnu/classpath/jdwp/VMFrame.java (SIZE): New constant.
* java/lang/VMCompiler.java: Use gnu.java.security.hash.MD5.
* java/lang/Math.java: New override file.
* java/lang/Character.java: Merged from Classpath.
(start, end): Now 'int's.
(canonicalName): New field.
(CANONICAL_NAME, NO_SPACES_NAME, CONSTANT_NAME): New constants.
(UnicodeBlock): Added argument.
(of): New overload.
(forName): New method.
Updated unicode blocks.
(sets): Updated.
* sources.am: Regenerated.
* Makefile.in: Likewise.
From-SVN: r111942
This commit is contained in:
Mark Wielaard
parent
27079765d0
commit
8aa540d2f7
1367 changed files with 188789 additions and 22762 deletions
180
libjava/classpath/gnu/java/security/prng/IRandom.java
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libjava/classpath/gnu/java/security/prng/IRandom.java
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/* IRandom.java --
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Copyright (C) 2001, 2002, 2003, 2006 Free Software Foundation, Inc.
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This file is a part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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USA
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.security.prng;
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import java.util.Map;
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/**
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* <p>The basic visible methods of any pseudo-random number generator.</p>
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*
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* <p>The [HAC] defines a PRNG (as implemented in this library) as follows:</p>
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*
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* <ul>
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* <li>"5.6 Definition: A pseudorandom bit generator (PRBG) is said to pass
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* the <em>next-bit test</em> if there is no polynomial-time algorithm which,
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* on input of the first <code>L</code> bits of an output sequence <code>S</code>,
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* can predict the <code>(L+1)</code>st bit of <code>S</code> with a
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* probability significantly grater than <code>1/2</code>."</li>
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*
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* <li>"5.8 Definition: A PRBG that passes the <em>next-bit test</em>
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* (possibly under some plausible but unproved mathematical assumption such
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* as the intractability of factoring integers) is called a
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* <em>cryptographically secure pseudorandom bit generator</em> (CSPRBG)."</li>
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* </ul>
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*
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* <p><b>IMPLEMENTATION NOTE</b>: Although all the concrete classes in this
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* package implement the {@link Cloneable} interface, it is important to note
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* here that such an operation, for those algorithms that use an underlting
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* symmetric key block cipher, <b>DOES NOT</b> clone any session key material
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* that may have been used in initialising the source PRNG (the instance to be
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* cloned). Instead a clone of an already initialised PRNG, that uses and
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* underlying symmetric key block cipher, is another instance with a clone of
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* the same cipher that operates with the <b>same block size</b> but without any
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* knowledge of neither key material nor key size.</p>
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*
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* <p>References:</p>
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*
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* <ol>
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* <li><a href="http://www.cacr.math.uwaterloo.ca/hac">[HAC]</a>: Handbook of
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* Applied Cryptography.<br>
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* CRC Press, Inc. ISBN 0-8493-8523-7, 1997<br>
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* Menezes, A., van Oorschot, P. and S. Vanstone.</li>
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* </ol>
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*/
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public interface IRandom extends Cloneable
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{
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// Constants
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// -------------------------------------------------------------------------
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// Methods
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// -------------------------------------------------------------------------
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/**
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* <p>Returns the canonical name of this instance.</p>
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*
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* @return the canonical name of this instance. */
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String name();
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/**
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* <p>Initialises the pseudo-random number generator scheme with the
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* appropriate attributes.</p>
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*
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* @param attributes a set of name-value pairs that describe the desired
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* future instance behaviour.
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* @exception IllegalArgumentException if at least one of the defined name/
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* value pairs contains invalid data.
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*/
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void init(Map attributes);
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/**
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* <p>Returns the next 8 bits of random data generated from this instance.</p>
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*
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* @return the next 8 bits of random data generated from this instance.
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* @exception IllegalStateException if the instance is not yet initialised.
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* @exception LimitReachedException if this instance has reached its
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* theoretical limit for generating non-repetitive pseudo-random data.
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*/
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byte nextByte() throws IllegalStateException, LimitReachedException;
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/**
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* <p>Fills the designated byte array, starting from byte at index
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* <code>offset</code>, for a maximum of <code>length</code> bytes with the
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* output of this generator instance.
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*
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* @param out the placeholder to contain the generated random bytes.
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* @param offset the starting index in <i>out</i> to consider. This method
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* does nothing if this parameter is not within <code>0</code> and
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* <code>out.length</code>.
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* @param length the maximum number of required random bytes. This method
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* does nothing if this parameter is less than <code>1</code>.
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* @exception IllegalStateException if the instance is not yet initialised.
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* @exception LimitReachedException if this instance has reached its
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* theoretical limit for generating non-repetitive pseudo-random data.
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*/
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void nextBytes(byte[] out, int offset, int length)
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throws IllegalStateException, LimitReachedException;
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/**
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* <p>Supplement, or possibly replace, the random state of this PRNG with
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* a random byte.</p>
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*
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* <p>Implementations are not required to implement this method in any
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* meaningful way; this may be a no-operation, and implementations may
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* throw an {@link UnsupportedOperationException}.</p>
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*
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* @param b The byte to add.
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*/
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void addRandomByte(byte b);
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/**
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* <p>Supplement, or possibly replace, the random state of this PRNG with
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* a sequence of new random bytes.</p>
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*
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* <p>Implementations are not required to implement this method in any
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* meaningful way; this may be a no-operation, and implementations may
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* throw an {@link UnsupportedOperationException}.</p>
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*
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* @param in The buffer of new random bytes to add.
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*/
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void addRandomBytes(byte[] in);
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/**
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* <p>Supplement, or possibly replace, the random state of this PRNG with
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* a sequence of new random bytes.</p>
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*
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* <p>Implementations are not required to implement this method in any
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* meaningful way; this may be a no-operation, and implementations may
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* throw an {@link UnsupportedOperationException}.</p>
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*
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* @param in The buffer of new random bytes to add.
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* @param offset The offset from whence to begin reading random bytes.
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* @param length The number of random bytes to add.
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* @exception IndexOutOfBoundsException If <i>offset</i>, <i>length</i>,
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* or <i>offset</i>+<i>length</i> is out of bounds.
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*/
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void addRandomBytes(byte[] in, int offset, int length);
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/**
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* <p>Returns a clone copy of this instance.</p>
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*
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* @return a clone copy of this instance.
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*/
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Object clone() throws CloneNotSupportedException;
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}
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