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
@@ -0,0 +1,176 @@
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/* RSASignatureFactory.java -- A Factory class to instantiate RSA Signatures
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is 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, or (at your option)
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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; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 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.sig.rsa;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Set;
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import gnu.java.security.Registry;
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import gnu.java.security.hash.HashFactory;
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import gnu.java.security.hash.IMessageDigest;
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import gnu.java.security.sig.ISignature;
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/**
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* A Factory class to instantiate RSA Signature classes.
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*/
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public class RSASignatureFactory
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{
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private static Set names;
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/**
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* Private constructor to enforce usage through Factory (class) methods.
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*/
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private RSASignatureFactory()
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{
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super();
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}
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/**
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* Returns a new instance of an RSA Signature given its name. The name of an
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* RSA Signature always starts with <code>rsa-</code>, followed by either
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* <code>pss</code> or <code>pkcs1_v1.5</code>. An optional message digest
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* name, to be used with the RSA signature may be specified by appending the
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* hyphen chanaracter <code>-</code> followed by the canonical message digest
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* algorithm name. When no message digest algorithm name is given, SHA-160 is
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* used.
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*
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* @param name the composite RSA signature name.
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* @return a new instance of an RSA Signature algorithm implementation.
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* Returns <code>null</code> if the given name does not correspond to any
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* supported RSA Signature encoding and message digest combination.
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*/
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public static final ISignature getInstance(String name)
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{
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if (name == null)
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return null;
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name = name.trim();
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if (name.length() == 0)
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return null;
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name = name.toLowerCase();
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if (! name.startsWith(Registry.RSA_SIG_PREFIX))
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return null;
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name = name.substring(Registry.RSA_SIG_PREFIX.length()).trim();
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if (name.startsWith(Registry.RSA_PSS_ENCODING))
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return getPSSSignature(name);
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else if (name.startsWith(Registry.RSA_PKCS1_V1_5_ENCODING))
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return getPKCS1Signature(name);
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else
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return null;
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}
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/**
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* Returns a {@link Set} of names of <i>RSA</i> signatures supported by this
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* <i>Factory</i>.
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*
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* @return a {@link Set} of RSA Signature algorithm names (Strings).
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*/
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public static synchronized final Set getNames()
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{
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if (names == null)
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{
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Set hashNames = HashFactory.getNames();
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HashSet hs = new HashSet();
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for (Iterator it = hashNames.iterator(); it.hasNext();)
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{
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String mdName = (String) it.next();
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hs.add(Registry.RSA_PSS_SIG + "-" + mdName);
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}
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hs.add(Registry.RSA_PKCS1_V1_5_SIG + "-" + Registry.MD2_HASH);
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hs.add(Registry.RSA_PKCS1_V1_5_SIG + "-" + Registry.MD5_HASH);
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hs.add(Registry.RSA_PKCS1_V1_5_SIG + "-" + Registry.SHA160_HASH);
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hs.add(Registry.RSA_PKCS1_V1_5_SIG + "-" + Registry.SHA256_HASH);
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hs.add(Registry.RSA_PKCS1_V1_5_SIG + "-" + Registry.SHA384_HASH);
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hs.add(Registry.RSA_PKCS1_V1_5_SIG + "-" + Registry.SHA512_HASH);
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names = Collections.unmodifiableSet(hs);
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}
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return names;
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}
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private static final ISignature getPSSSignature(String name)
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{
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name = name.substring(Registry.RSA_PSS_ENCODING.length()).trim();
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// remove the hyphen if found at the beginning
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if (name.startsWith("-"))
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name = name.substring(1).trim();
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IMessageDigest md;
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if (name.length() == 0)
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md = HashFactory.getInstance(Registry.SHA160_HASH);
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else
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{
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// check if there is such a hash
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md = HashFactory.getInstance(name);
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if (md == null)
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return null;
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}
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ISignature result = new RSAPSSSignature(md, 0);
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return result;
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}
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private static final ISignature getPKCS1Signature(String name)
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{
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name = name.substring(Registry.RSA_PKCS1_V1_5_ENCODING.length()).trim();
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// remove the hyphen if found at the beginning
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if (name.startsWith("-"))
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name = name.substring(1).trim();
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IMessageDigest md;
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if (name.length() == 0)
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md = HashFactory.getInstance(Registry.SHA160_HASH);
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else
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{
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// check if there is such a hash
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md = HashFactory.getInstance(name);
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if (md == null)
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return null;
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}
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ISignature result = new RSAPKCS1V1_5Signature(md);
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return result;
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}
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}
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