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. --- .../classpath/gnu/java/security/prng/IRandom.java | 174 +++++++++++++++++++++ 1 file changed, 174 insertions(+) create mode 100644 libjava/classpath/gnu/java/security/prng/IRandom.java (limited to 'libjava/classpath/gnu/java/security/prng/IRandom.java') diff --git a/libjava/classpath/gnu/java/security/prng/IRandom.java b/libjava/classpath/gnu/java/security/prng/IRandom.java new file mode 100644 index 000000000..eb1495dd8 --- /dev/null +++ b/libjava/classpath/gnu/java/security/prng/IRandom.java @@ -0,0 +1,174 @@ +/* IRandom.java -- + Copyright (C) 2001, 2002, 2003, 2006 Free Software Foundation, Inc. + +This file is a 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 of the License, 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; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, 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 gnu.java.security.prng; + +import java.util.Map; + +/** + * The basic visible methods of any pseudo-random number generator. + *

+ * The [HAC] defines a PRNG (as implemented in this library) as follows: + *

+ *

+ * IMPLEMENTATION NOTE: Although all the concrete classes in this + * package implement the {@link Cloneable} interface, it is important to note + * here that such an operation, for those algorithms that use an underlying + * symmetric key block cipher, DOES NOT clone any session key material + * that may have been used in initialising the source PRNG (the instance to be + * cloned). Instead a clone of an already initialised PRNG, that uses an + * underlying symmetric key block cipher, is another instance with a clone of + * the same cipher that operates with the same block size but without + * any knowledge of neither key material nor key size. + *

+ * References: + *

    + *
  1. [HAC]: Handbook of + * Applied Cryptography.
    + * CRC Press, Inc. ISBN 0-8493-8523-7, 1997
    + * Menezes, A., van Oorschot, P. and S. Vanstone.
    2. + *
+ */ +public interface IRandom + extends Cloneable +{ + /** + * Returns the canonical name of this instance. + * + * @return the canonical name of this instance. + */ + String name(); + + /** + * Initialises the pseudo-random number generator scheme with the appropriate + * attributes. + * + * @param attributes a set of name-value pairs that describe the desired + * future instance behaviour. + * @exception IllegalArgumentException if at least one of the defined name/ + * value pairs contains invalid data. + */ + void init(Map attributes); + + /** + * Returns the next 8 bits of random data generated from this instance. + * + * @return the next 8 bits of random data generated from this instance. + * @exception IllegalStateException if the instance is not yet initialised. + * @exception LimitReachedException if this instance has reached its + * theoretical limit for generating non-repetitive pseudo-random + * data. + */ + byte nextByte() throws IllegalStateException, LimitReachedException; + + /** + * Fills the designated byte array, starting from byte at index + * offset, for a maximum of length bytes with + * the output of this generator instance. + * + * @param out the placeholder to contain the generated random bytes. + * @param offset the starting index in out to consider. This method + * does nothing if this parameter is not within 0 and + * out.length. + * @param length the maximum number of required random bytes. This method does + * nothing if this parameter is less than 1. + * @exception IllegalStateException if the instance is not yet initialised. + * @exception LimitReachedException if this instance has reached its + * theoretical limit for generating non-repetitive pseudo-random + * data. + */ + void nextBytes(byte[] out, int offset, int length) + throws IllegalStateException, LimitReachedException; + + /** + * Supplement, or possibly replace, the random state of this PRNG with a + * random byte. + *

+ * Implementations are not required to implement this method in any meaningful + * way; this may be a no-operation, and implementations may throw an + * {@link UnsupportedOperationException}. + * + * @param b The byte to add. + */ + void addRandomByte(byte b); + + /** + * Supplement, or possibly replace, the random state of this PRNG with a + * sequence of new random bytes. + *

+ * Implementations are not required to implement this method in any meaningful + * way; this may be a no-operation, and implementations may throw an + * {@link UnsupportedOperationException}. + * + * @param in The buffer of new random bytes to add. + */ + void addRandomBytes(byte[] in); + + /** + * Supplement, or possibly replace, the random state of this PRNG with a + * sequence of new random bytes. + *

+ * Implementations are not required to implement this method in any meaningful + * way; this may be a no-operation, and implementations may throw an + * {@link UnsupportedOperationException}. + * + * @param in The buffer of new random bytes to add. + * @param offset The offset from whence to begin reading random bytes. + * @param length The number of random bytes to add. + * @exception IndexOutOfBoundsException If offset, length, or + * offset+length is out of bounds. + */ + void addRandomBytes(byte[] in, int offset, int length); + + /** + * Returns a clone copy of this instance. + * + * @return a clone copy of this instance. + */ + Object clone() throws CloneNotSupportedException; +} -- cgit v1.2.3