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Imported GNU Classpath 0.90

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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
2006-03-10 21:46:48 +00:00
parent 27079765d0
commit 8aa540d2f7
1367 changed files with 188789 additions and 22762 deletions
Download Patch File Download Diff File Expand all files Collapse all files
libjava/classpath/gnu/java/security/jce/sig/DSSParameters.java
+220
View File
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/* DSSParameters.java -- DSS parameters DAO
Copyright (C) 2006 Free Software Foundation, Inc.
This file is 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, 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; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, 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.jce.sig;
import gnu.java.security.Registry;
import gnu.java.security.der.DER;
import gnu.java.security.der.DERReader;
import gnu.java.security.der.DERValue;
import gnu.java.security.der.DERWriter;
import gnu.java.security.util.DerUtil;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.AlgorithmParametersSpi;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.DSAParameterSpec;
import java.security.spec.InvalidParameterSpecException;
import java.util.ArrayList;
/**
* A JCE-specific Data Access Object (DAO) for DSS parameters.
*/
public class DSSParameters
extends AlgorithmParametersSpi
{
/**
* A prime modulus, where <code>2<sup>L-1</sup> &lt; p &lt; 2<sup>L</sup></code>
* for <code>512 &lt;= L &lt;= 1024</code> and <code>L</code> a multiple of
* <code>64</code>.
*/
private BigInteger p;
/**
* A prime divisor of <code>p - 1</code>, where <code>2<sup>159</sup> &lt; q
* &lt; 2<sup>160</sup></code>.
*/
private BigInteger q;
/**
* <code>g = h<sup>(p-1)</sup>/q mod p</code>, where <code>h</code> is any
* integer with <code>1 &lt; h &lt; p - 1</code> such that <code>h<sup>
* (p-1)</sup>/q mod p > 1</code> (<code>g</code> has order <code>q mod p
* </code>).
*/
private BigInteger g;
// default 0-arguments constructor
protected void engineInit(AlgorithmParameterSpec spec)
throws InvalidParameterSpecException
{
if (! (spec instanceof DSAParameterSpec))
throw new InvalidParameterSpecException("Wrong AlgorithmParameterSpec type: "
+ spec.getClass().getName());
DSAParameterSpec dsaSpec = (DSAParameterSpec) spec;
p = dsaSpec.getP();
q = dsaSpec.getQ();
g = dsaSpec.getG();
}
/**
* Decodes the set of DSS parameters as per RFC-2459; i.e. the DER-encoded
* form of the following ASN.1 construct:
*
* <pre>
* DssParams ::= SEQUENCE {
* p INTEGER,
* q INTEGER,
* g INTEGER
* }
* </pre>
*/
protected void engineInit(byte[] params) throws IOException
{
DERReader der = new DERReader(params);
DERValue derParams = der.read();
DerUtil.checkIsConstructed(derParams, "Wrong DSS Parameters field");
DERValue val = der.read();
DerUtil.checkIsBigInteger(val, "Wrong P field");
p = (BigInteger) val.getValue();
val = der.read();
DerUtil.checkIsBigInteger(val, "Wrong Q field");
q = (BigInteger) val.getValue();
val = der.read();
DerUtil.checkIsBigInteger(val, "Wrong G field");
g = (BigInteger) val.getValue();
}
protected void engineInit(byte[] params, String format) throws IOException
{
if (format != null)
{
format = format.trim();
if (format.length() == 0)
throw new IOException("Format MUST NOT be an empty string");
if (! format.equalsIgnoreCase(Registry.ASN1_ENCODING_SHORT_NAME))
throw new IOException("Unknown or unsupported format: " + format);
}
engineInit(params);
}
protected AlgorithmParameterSpec engineGetParameterSpec(Class paramSpec)
throws InvalidParameterSpecException
{
if (! paramSpec.isAssignableFrom(DSAParameterSpec.class))
throw new InvalidParameterSpecException("Wrong AlgorithmParameterSpec type: "
+ paramSpec.getName());
return new DSAParameterSpec(p, q, g);
}
/**
* Encodes the set of DSS parameters as per RFC-2459; i.e. as the DER-encoded
* form of the following ASN.1 construct:
*
* <pre>
* DssParams ::= SEQUENCE {
* p INTEGER,
* q INTEGER,
* g INTEGER
* }
* </pre>
*/
protected byte[] engineGetEncoded() throws IOException
{
DERValue derP = new DERValue(DER.INTEGER, p);
DERValue derQ = new DERValue(DER.INTEGER, q);
DERValue derG = new DERValue(DER.INTEGER, g);
ArrayList params = new ArrayList(3);
params.add(derP);
params.add(derQ);
params.add(derG);
DERValue derParams = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, params);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DERWriter.write(baos, derParams);
byte[] result = baos.toByteArray();
return result;
}
protected byte[] engineGetEncoded(String format) throws IOException
{
if (format != null)
{
format = format.trim();
if (format.length() == 0)
throw new IOException("Format MUST NOT be an empty string");
if (! format.equalsIgnoreCase(Registry.ASN1_ENCODING_SHORT_NAME))
throw new IOException("Unknown or unsupported format: " + format);
}
return engineGetEncoded();
}
protected String engineToString()
{
StringBuffer sb = new StringBuffer("p=");
if (p == null)
sb.append("???");
else
sb.append("0x").append(p.toString(16));
sb.append(", q=");
if (q == null)
sb.append("???");
else
sb.append("0x").append(q.toString(16));
sb.append(", g=");
if (g == null)
sb.append("???");
else
sb.append("0x").append(g.toString(16));
return sb.toString();
}
}