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. --- .../gnu/javax/crypto/prng/PRNGFactory.java | 115 +++++++++++++++++++++ 1 file changed, 115 insertions(+) create mode 100644 libjava/classpath/gnu/javax/crypto/prng/PRNGFactory.java (limited to 'libjava/classpath/gnu/javax/crypto/prng/PRNGFactory.java') diff --git a/libjava/classpath/gnu/javax/crypto/prng/PRNGFactory.java b/libjava/classpath/gnu/javax/crypto/prng/PRNGFactory.java new file mode 100644 index 000000000..0a7c5e377 --- /dev/null +++ b/libjava/classpath/gnu/javax/crypto/prng/PRNGFactory.java @@ -0,0 +1,115 @@ +/* PRNGFactory.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.javax.crypto.prng; + +import gnu.java.security.Registry; +import gnu.java.security.prng.IRandom; +import gnu.javax.crypto.mac.HMacFactory; +import gnu.javax.crypto.mac.IMac; +import gnu.javax.crypto.mac.MacFactory; + +import java.util.Collections; +import java.util.HashSet; +import java.util.Iterator; +import java.util.Set; + +/** + * A Factory to instantiate pseudo random number generators. + */ +public class PRNGFactory + implements Registry +{ + /** Trivial constructor to enforce Singleton pattern. */ + private PRNGFactory() + { + } + + /** + * Returns an instance of a padding algorithm given its name. + * + * @param prng the case-insensitive name of the PRNG. + * @return an instance of the pseudo-random number generator. + * @exception InternalError if the implementation does not pass its self- + * test. + */ + public static IRandom getInstance(String prng) + { + if (prng == null) + return null; + prng = prng.trim(); + IRandom result = null; + if (prng.equalsIgnoreCase(ARCFOUR_PRNG) || prng.equalsIgnoreCase(RC4_PRNG)) + result = new ARCFour(); + else if (prng.equalsIgnoreCase(ICM_PRNG)) + result = new ICMGenerator(); + else if (prng.equalsIgnoreCase(UMAC_PRNG)) + result = new UMacGenerator(); + else if (prng.toLowerCase().startsWith(PBKDF2_PRNG_PREFIX)) + { + String macName = prng.substring(PBKDF2_PRNG_PREFIX.length()); + IMac mac = MacFactory.getInstance(macName); + if (mac == null) + return null; + result = new PBKDF2(mac); + } + + if (result != null) + return result; + + return gnu.java.security.prng.PRNGFactory.getInstance(prng); + } + + /** + * Returns a {@link Set} of names of padding algorithms supported by this + * Factory. + * + * @return a {@link Set} of pseudo-random number generator algorithm names + * (Strings). + */ + public static Set getNames() + { + HashSet hs = new HashSet(gnu.java.security.prng.PRNGFactory.getNames()); + hs.add(ICM_PRNG); + hs.add(UMAC_PRNG); + // add all hmac implementations as candidate PBKDF2 ones too + for (Iterator it = HMacFactory.getNames().iterator(); it.hasNext();) + hs.add(PBKDF2_PRNG_PREFIX + ((String) it.next())); + return Collections.unmodifiableSet(hs); + } +} -- cgit v1.2.3