Mark Wielaard
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
333 lines
11 KiB
Java
333 lines
11 KiB
Java
/* RSAKeyPairRawCodec.java --
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Copyright 2001, 2002, 2003, 2006 Free Software Foundation, Inc.
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This file is a 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 of the License, or (at
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your option) 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; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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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.key.rsa;
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import gnu.java.security.Registry;
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import gnu.java.security.key.IKeyPairCodec;
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import java.io.ByteArrayOutputStream;
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import java.math.BigInteger;
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import java.security.PrivateKey;
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import java.security.PublicKey;
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/**
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* <p>An object that implements the {@link IKeyPairCodec} interface for the
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* <i>Raw</i> format to use with RSA keypairs.</p>
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*
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* @version $Revision: 1.1 $
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*/
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public class RSAKeyPairRawCodec implements IKeyPairCodec
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{
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// Constants and variables
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// -------------------------------------------------------------------------
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// Constructor(s)
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// -------------------------------------------------------------------------
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// implicit 0-arguments constructor
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// Class methods
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// -------------------------------------------------------------------------
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// Instance methods
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// -------------------------------------------------------------------------
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// gnu.crypto.key.IKeyPairCodec interface implementation -------------------
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public int getFormatID()
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{
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return RAW_FORMAT;
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}
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/**
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* <p>Returns the encoded form of the designated RSA public key according to
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* the <i>Raw</i> format supported by this library.</p>
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*
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* <p>The <i>Raw</i> format for an RSA public key, in this implementation, is
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* a byte sequence consisting of the following:</p>
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*
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* <ol>
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* <li>4-byte magic consisting of the value of the literal
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* {@link Registry#MAGIC_RAW_RSA_PUBLIC_KEY},<li>
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* <li>1-byte version consisting of the constant: 0x01,</li>
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* <li>4-byte count of following bytes representing the RSA parameter
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* <code>n</code> (the modulus) in internet order,</li>
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* <li>n-bytes representation of a {@link BigInteger} obtained by invoking
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* the <code>toByteArray()</code> method on the RSA parameter <code>n</code>,</li>
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* <li>4-byte count of following bytes representing the RSA parameter
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* <code>e</code> (the public exponent) in internet order,</li>
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* <li>n-bytes representation of a {@link BigInteger} obtained by invoking
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* the <code>toByteArray()</code> method on the RSA parameter <code>e</code>.</li>
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* </ol>
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*
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* @param key the key to encode.
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* @return the <i>Raw</i> format encoding of the designated key.
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* @exception IllegalArgumentException if the designated key is not an RSA
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* one.
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*/
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public byte[] encodePublicKey(PublicKey key)
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{
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if (!(key instanceof GnuRSAPublicKey))
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{
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throw new IllegalArgumentException("key");
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}
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GnuRSAPublicKey rsaKey = (GnuRSAPublicKey) key;
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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// magic
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baos.write(Registry.MAGIC_RAW_RSA_PUBLIC_KEY[0]);
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baos.write(Registry.MAGIC_RAW_RSA_PUBLIC_KEY[1]);
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baos.write(Registry.MAGIC_RAW_RSA_PUBLIC_KEY[2]);
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baos.write(Registry.MAGIC_RAW_RSA_PUBLIC_KEY[3]);
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// version
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baos.write(0x01);
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// n
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byte[] buffer = rsaKey.getModulus().toByteArray();
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int length = buffer.length;
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baos.write(length >>> 24);
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baos.write((length >>> 16) & 0xFF);
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baos.write((length >>> 8) & 0xFF);
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baos.write(length & 0xFF);
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baos.write(buffer, 0, length);
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// e
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buffer = rsaKey.getPublicExponent().toByteArray();
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length = buffer.length;
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baos.write(length >>> 24);
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baos.write((length >>> 16) & 0xFF);
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baos.write((length >>> 8) & 0xFF);
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baos.write(length & 0xFF);
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baos.write(buffer, 0, length);
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return baos.toByteArray();
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}
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public PublicKey decodePublicKey(byte[] k)
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{
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// magic
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if (k[0] != Registry.MAGIC_RAW_RSA_PUBLIC_KEY[0]
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|| k[1] != Registry.MAGIC_RAW_RSA_PUBLIC_KEY[1]
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|| k[2] != Registry.MAGIC_RAW_RSA_PUBLIC_KEY[2]
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|| k[3] != Registry.MAGIC_RAW_RSA_PUBLIC_KEY[3])
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{
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throw new IllegalArgumentException("magic");
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}
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// version
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if (k[4] != 0x01)
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{
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throw new IllegalArgumentException("version");
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}
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int i = 5;
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int l;
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byte[] buffer;
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// n
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l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8
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| (k[i++] & 0xFF);
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buffer = new byte[l];
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System.arraycopy(k, i, buffer, 0, l);
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i += l;
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BigInteger n = new BigInteger(1, buffer);
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// e
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l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8
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| (k[i++] & 0xFF);
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buffer = new byte[l];
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System.arraycopy(k, i, buffer, 0, l);
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i += l;
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BigInteger e = new BigInteger(1, buffer);
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return new GnuRSAPublicKey(n, e);
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}
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/**
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* <p>Returns the encoded form of the designated RSA private key according to
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* the <i>Raw</i> format supported by this library.</p>
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*
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* <p>The <i>Raw</i> format for an RSA private key, in this implementation,
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* is a byte sequence consisting of the following:</p>
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*
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* <ol>
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* <li>4-byte magic consisting of the value of the literal
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* {@link Registry#MAGIC_RAW_RSA_PRIVATE_KEY},<li>
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* <li>1-byte version consisting of the constant: 0x01,</li>
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* <li>4-byte count of following bytes representing the RSA parameter
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* <code>p</code> (the first prime factor of the modulus) in internet
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* order,</li>
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* <li>n-bytes representation of a {@link BigInteger} obtained by invoking
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* the <code>toByteArray()</code> method on the RSA parameter <code>p</code>,</li>
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* <li>4-byte count of following bytes representing the RSA parameter
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* <code>q</code> (the second prime factor of the modulus) in internet
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* order,</li>
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* <li>n-bytes representation of a {@link BigInteger} obtained by invoking
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* the <code>toByteArray()</code> method on the RSA parameter <code>q</code>,</li>
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* <li>4-byte count of following bytes representing the RSA parameter
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* <code>e</code> (the public exponent) in internet order,</li>
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* <li>n-bytes representation of a {@link BigInteger} obtained by invoking
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* the <code>toByteArray()</code> method on the RSA parameter <code>e</code>,</li>
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* <li>4-byte count of following bytes representing the RSA parameter
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* <code>d</code> (the private exponent) in internet order,</li>
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* <li>n-bytes representation of a {@link BigInteger} obtained by invoking
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* the <code>toByteArray()</code> method on the RSA parameter <code>d</code>,</li>
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* </ol>
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*
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* @param key the key to encode.
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* @return the <i>Raw</i> format encoding of the designated key.
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*/
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public byte[] encodePrivateKey(PrivateKey key)
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{
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if (!(key instanceof GnuRSAPrivateKey))
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{
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throw new IllegalArgumentException("key");
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}
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GnuRSAPrivateKey rsaKey = (GnuRSAPrivateKey) key;
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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// magic
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baos.write(Registry.MAGIC_RAW_RSA_PRIVATE_KEY[0]);
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baos.write(Registry.MAGIC_RAW_RSA_PRIVATE_KEY[1]);
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baos.write(Registry.MAGIC_RAW_RSA_PRIVATE_KEY[2]);
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baos.write(Registry.MAGIC_RAW_RSA_PRIVATE_KEY[3]);
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// version
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baos.write(0x01);
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// p
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byte[] buffer = rsaKey.getPrimeP().toByteArray();
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int length = buffer.length;
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baos.write(length >>> 24);
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baos.write((length >>> 16) & 0xFF);
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baos.write((length >>> 8) & 0xFF);
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baos.write(length & 0xFF);
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baos.write(buffer, 0, length);
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// q
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buffer = rsaKey.getPrimeQ().toByteArray();
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length = buffer.length;
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baos.write(length >>> 24);
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baos.write((length >>> 16) & 0xFF);
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baos.write((length >>> 8) & 0xFF);
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baos.write(length & 0xFF);
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baos.write(buffer, 0, length);
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// e
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buffer = rsaKey.getPublicExponent().toByteArray();
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length = buffer.length;
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baos.write(length >>> 24);
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baos.write((length >>> 16) & 0xFF);
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baos.write((length >>> 8) & 0xFF);
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baos.write(length & 0xFF);
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baos.write(buffer, 0, length);
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// d
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buffer = rsaKey.getPrivateExponent().toByteArray();
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length = buffer.length;
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baos.write(length >>> 24);
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baos.write((length >>> 16) & 0xFF);
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baos.write((length >>> 8) & 0xFF);
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baos.write(length & 0xFF);
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baos.write(buffer, 0, length);
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return baos.toByteArray();
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}
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public PrivateKey decodePrivateKey(byte[] k)
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{
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// magic
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if (k[0] != Registry.MAGIC_RAW_RSA_PRIVATE_KEY[0]
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|| k[1] != Registry.MAGIC_RAW_RSA_PRIVATE_KEY[1]
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|| k[2] != Registry.MAGIC_RAW_RSA_PRIVATE_KEY[2]
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|| k[3] != Registry.MAGIC_RAW_RSA_PRIVATE_KEY[3])
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{
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throw new IllegalArgumentException("magic");
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}
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// version
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if (k[4] != 0x01)
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{
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throw new IllegalArgumentException("version");
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}
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int i = 5;
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int l;
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byte[] buffer;
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// p
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l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8
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| (k[i++] & 0xFF);
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buffer = new byte[l];
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System.arraycopy(k, i, buffer, 0, l);
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i += l;
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BigInteger p = new BigInteger(1, buffer);
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// q
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l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8
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| (k[i++] & 0xFF);
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buffer = new byte[l];
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System.arraycopy(k, i, buffer, 0, l);
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i += l;
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BigInteger q = new BigInteger(1, buffer);
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// e
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l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8
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| (k[i++] & 0xFF);
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buffer = new byte[l];
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System.arraycopy(k, i, buffer, 0, l);
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i += l;
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BigInteger e = new BigInteger(1, buffer);
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// d
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l = k[i++] << 24 | (k[i++] & 0xFF) << 16 | (k[i++] & 0xFF) << 8
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| (k[i++] & 0xFF);
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buffer = new byte[l];
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System.arraycopy(k, i, buffer, 0, l);
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i += l;
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BigInteger d = new BigInteger(1, buffer);
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return new GnuRSAPrivateKey(p, q, e, d);
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}
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}
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