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authormark <mark@138bc75d-0d04-0410-961f-82ee72b054a4>2006-03-10 21:46:48 +0000
committermark <mark@138bc75d-0d04-0410-961f-82ee72b054a4>2006-03-10 21:46:48 +0000
commitce57ab760f69de6db452def7ffbf5b114a2d8694 (patch)
treeea38c56431c5d4528fb54254c3f8e50f517bede3 /libjava/classpath/gnu/java/security/sig/SignatureFactory.java
parent50996fe55769882de3f410896032c887f0ff0d04 (diff)
downloadppe42-gcc-ce57ab760f69de6db452def7ffbf5b114a2d8694.tar.gz
ppe42-gcc-ce57ab760f69de6db452def7ffbf5b114a2d8694.zip
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. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@111942 138bc75d-0d04-0410-961f-82ee72b054a4
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+/* SignatureFactory.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.sig;
+
+import gnu.java.security.Registry;
+import gnu.java.security.sig.dss.DSSSignature;
+import gnu.java.security.sig.rsa.RSASignatureFactory;
+
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * A Factory to instantiate signature-with-appendix handlers.
+ */
+public class SignatureFactory
+{
+ private static Set names;
+
+ // Constructor(s)
+ // -------------------------------------------------------------------------
+
+ /** Trivial constructor to enforce Singleton pattern. */
+ private SignatureFactory()
+ {
+ super();
+ }
+
+ // Class methods
+ // -------------------------------------------------------------------------
+
+ /**
+ * Returns an instance of a signature-with-appendix scheme given its name.
+ *
+ * @param ssa the case-insensitive signature-with-appendix scheme name.
+ * @return an instance of the scheme, or <code>null</code> if none found.
+ */
+ public static final ISignature getInstance(String ssa)
+ {
+ if (ssa == null)
+ {
+ return null;
+ }
+
+ ssa = ssa.trim();
+ ssa = ssa.toLowerCase();
+ ISignature result = null;
+ if (ssa.equalsIgnoreCase(Registry.DSA_SIG) || ssa.equals(Registry.DSS_SIG))
+ {
+ result = new DSSSignature();
+ }
+ else if (ssa.startsWith(Registry.RSA_SIG_PREFIX))
+ result = RSASignatureFactory.getInstance(ssa);
+
+ return result;
+ }
+
+ /**
+ * Returns a {@link Set} of signature-with-appendix scheme names supported
+ * by this <i>Factory</i>.
+ *
+ * @return a {@link Set} of signature-with-appendix scheme names (Strings).
+ */
+ public static synchronized final Set getNames()
+ {
+ if (names == null)
+ {
+ HashSet hs = new HashSet();
+ hs.add(Registry.DSS_SIG);
+ hs.addAll(RSASignatureFactory.getNames());
+
+ names = Collections.unmodifiableSet(hs);
+ }
+
+ return names;
+ }
+}
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