8aa540d2f7
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
113 lines
3.6 KiB
Java
113 lines
3.6 KiB
Java
/* 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;
|
|
}
|
|
}
|