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diff --git a/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/key/dh/DHKeyPairPKCS8Codec.java b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/key/dh/DHKeyPairPKCS8Codec.java
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+/* DHKeyPairPKCS8Codec.java -- PKCS#8 encoder/decoder for DH keys
+ 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.javax.crypto.key.dh;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.math.BigInteger;
+import java.security.InvalidParameterException;
+import java.security.PrivateKey;
+import java.security.PublicKey;
+import java.util.ArrayList;
+
+import gnu.java.security.OID;
+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.key.IKeyPairCodec;
+import gnu.java.security.util.DerUtil;
+import gnu.java.security.util.Util;
+
+public class DHKeyPairPKCS8Codec
+ implements IKeyPairCodec
+{
+ private static final OID DH_ALG_OID = new OID(Registry.DH_OID_STRING);
+
+ // implicit 0-arguments constructor
+
+ public int getFormatID()
+ {
+ return PKCS8_FORMAT;
+ }
+
+ /**
+ * @throws InvalidParameterException ALWAYS.
+ */
+ public byte[] encodePublicKey(PublicKey key)
+ {
+ throw new InvalidParameterException("Wrong format for public keys");
+ }
+
+ /**
+ * Returns the DER-encoded form of the PKCS#8 ASN.1 <i>PrivateKeyInfo</i>
+ * representation of a DH private key. The ASN.1 specification is as follows:
+ *
+ * <pre>
+ * PrivateKeyInfo ::= SEQUENCE {
+ * version INTEGER, -- MUST be 0
+ * privateKeyAlgorithm AlgorithmIdentifier,
+ * privateKey OCTET STRING
+ * }
+ *
+ * AlgorithmIdentifier ::= SEQUENCE {
+ * algorithm OBJECT IDENTIFIER,
+ * parameters ANY DEFINED BY algorithm OPTIONAL
+ * }
+ *
+ * DhParams ::= SEQUENCE {
+ * p INTEGER, -- odd prime, p=jq +1
+ * g INTEGER, -- generator, g
+ * q INTEGER -- factor of p-1
+ * }
+ * </pre>
+ * <p>
+ * <b>IMPORTANT</b>: with RI's {@link javax.crypto.spec.DHGenParameterSpec}
+ * and {@link javax.crypto.spec.DHParameterSpec} classes, we may end up with
+ * Diffie-Hellman keys that have a <code>null</code> for the <code>q</code>
+ * parameter. RFC-2631 DOES NOT allow for an <i>optional</i> value for that
+ * parameter, hence we replace such null values with <code>0</code>, and do
+ * the reverse in the corresponding decode method.
+ *
+ * @return the DER encoded form of the ASN.1 representation of the
+ * <i>PrivateKeyInfo</i> field in an X.509 certificate.
+ * @throw InvalidParameterException if an error occurs during the marshalling
+ * process.
+ */
+ public byte[] encodePrivateKey(PrivateKey key)
+ {
+ if (! (key instanceof GnuDHPrivateKey))
+ throw new InvalidParameterException("Wrong key type");
+
+ DERValue derVersion = new DERValue(DER.INTEGER, BigInteger.ZERO);
+
+ DERValue derOID = new DERValue(DER.OBJECT_IDENTIFIER, DH_ALG_OID);
+
+ GnuDHPrivateKey pk = (GnuDHPrivateKey) key;
+ BigInteger p = pk.getParams().getP();
+ BigInteger g = pk.getParams().getG();
+ BigInteger q = pk.getQ();
+ if (q == null)
+ q = BigInteger.ZERO;
+ BigInteger x = pk.getX();
+
+ ArrayList params = new ArrayList(3);
+ params.add(new DERValue(DER.INTEGER, p));
+ params.add(new DERValue(DER.INTEGER, g));
+ params.add(new DERValue(DER.INTEGER, q));
+ DERValue derParams = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, params);
+
+ ArrayList algorithmID = new ArrayList(2);
+ algorithmID.add(derOID);
+ algorithmID.add(derParams);
+ DERValue derAlgorithmID = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE,
+ algorithmID);
+
+ DERValue derPrivateKey = new DERValue(DER.OCTET_STRING, Util.trim(x));
+
+ ArrayList pki = new ArrayList(3);
+ pki.add(derVersion);
+ pki.add(derAlgorithmID);
+ pki.add(derPrivateKey);
+ DERValue derPKI = new DERValue(DER.CONSTRUCTED | DER.SEQUENCE, pki);
+
+ byte[] result;
+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ try
+ {
+ DERWriter.write(baos, derPKI);
+ result = baos.toByteArray();
+ }
+ catch (IOException e)
+ {
+ InvalidParameterException y = new InvalidParameterException();
+ y.initCause(e);
+ throw y;
+ }
+
+ return result;
+ }
+
+ /**
+ * @throws InvalidParameterException ALWAYS.
+ */
+ public PublicKey decodePublicKey(byte[] input)
+ {
+ throw new InvalidParameterException("Wrong format for public keys");
+ }
+
+ /**
+ * @param input the byte array to unmarshall into a valid DH
+ * {@link PrivateKey} instance. MUST NOT be null.
+ * @return a new instance of a {@link GnuDHPrivateKey} decoded from the
+ * <i>PrivateKeyInfo</i> material fed as <code>input</code>.
+ * @throw InvalidParameterException if an exception occurs during the
+ * unmarshalling process.
+ */
+ public PrivateKey decodePrivateKey(byte[] input)
+ {
+ if (input == null)
+ throw new InvalidParameterException("Input bytes MUST NOT be null");
+
+ BigInteger version, p, q, g, x;
+ DERReader der = new DERReader(input);
+ try
+ {
+ DERValue derPKI = der.read();
+ DerUtil.checkIsConstructed(derPKI, "Wrong PrivateKeyInfo field");
+
+ DERValue derVersion = der.read();
+ if (! (derVersion.getValue() instanceof BigInteger))
+ throw new InvalidParameterException("Wrong Version field");
+
+ version = (BigInteger) derVersion.getValue();
+ if (version.compareTo(BigInteger.ZERO) != 0)
+ throw new InvalidParameterException("Unexpected Version: " + version);
+
+ DERValue derAlgoritmID = der.read();
+ DerUtil.checkIsConstructed(derAlgoritmID, "Wrong AlgorithmIdentifier field");
+
+ DERValue derOID = der.read();
+ OID algOID = (OID) derOID.getValue();
+ if (! algOID.equals(DH_ALG_OID))
+ throw new InvalidParameterException("Unexpected OID: " + algOID);
+
+ 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 G field");
+ g = (BigInteger) val.getValue();
+ val = der.read();
+ DerUtil.checkIsBigInteger(val, "Wrong Q field");
+ q = (BigInteger) val.getValue();
+ if (q.compareTo(BigInteger.ZERO) == 0)
+ q = null;
+
+ val = der.read();
+ byte[] xBytes = (byte[]) val.getValue();
+ x = new BigInteger(1, xBytes);
+ }
+ catch (IOException e)
+ {
+ InvalidParameterException y = new InvalidParameterException();
+ y.initCause(e);
+ throw y;
+ }
+
+ return new GnuDHPrivateKey(Registry.PKCS8_ENCODING_ID, q, p, g, x);
+ }
+}
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