| /* ClientKeyExchange.java -- SSL ClientKeyExchange message. |
| Copyright (C) 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.javax.net.ssl.provider; |
| |
| import java.io.BufferedReader; |
| import java.io.DataInputStream; |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.PrintWriter; |
| import java.io.StringReader; |
| import java.io.StringWriter; |
| |
| import java.math.BigInteger; |
| |
| import java.security.PublicKey; |
| import java.security.interfaces.RSAKey; |
| import javax.crypto.interfaces.DHPublicKey; |
| |
| final class ClientKeyExchange implements Handshake.Body |
| { |
| |
| // Fields. |
| // ------------------------------------------------------------------------- |
| |
| private final Object exObject; |
| |
| // Constructors. |
| // ------------------------------------------------------------------------- |
| |
| ClientKeyExchange(byte[] encryptedSecret) |
| { |
| exObject = encryptedSecret; |
| } |
| |
| ClientKeyExchange(BigInteger bigint) |
| { |
| exObject = bigint; |
| } |
| |
| // Class method. |
| // ------------------------------------------------------------------------- |
| |
| static ClientKeyExchange read(InputStream in, CipherSuite suite, |
| PublicKey key) |
| throws IOException |
| { |
| DataInputStream din = new DataInputStream(in); |
| if (suite.getKeyExchange().equals("RSA")) |
| { |
| int len = 0; |
| if (suite.getVersion() == ProtocolVersion.SSL_3) |
| { |
| len = (((RSAKey) key).getModulus().bitLength()+7) / 8; |
| } |
| else |
| { |
| len = din.readUnsignedShort(); |
| } |
| byte[] buf = new byte[len]; |
| din.readFully(buf); |
| return new ClientKeyExchange(buf); |
| } |
| else if (suite.getKeyExchange().equals("SRP")) |
| { |
| byte[] buf = new byte[din.readUnsignedShort()]; |
| din.readFully(buf); |
| return new ClientKeyExchange(new BigInteger(1, buf)); |
| } |
| else if (key == null || !(key instanceof DHPublicKey)) // explicit. |
| { |
| byte[] buf = new byte[din.readUnsignedShort()]; |
| din.readFully(buf); |
| return new ClientKeyExchange(new BigInteger(1, buf)); |
| } |
| else |
| { |
| return new ClientKeyExchange(new byte[0]); |
| } |
| } |
| |
| // Instance methods. |
| // ------------------------------------------------------------------------- |
| |
| public void write(OutputStream out) throws IOException |
| { |
| throw new UnsupportedOperationException("use write(java.io.OutputStream,ProtocolVersion) instead"); |
| } |
| |
| public void write(OutputStream out, ProtocolVersion version) throws IOException |
| { |
| if (exObject instanceof byte[]) |
| { |
| byte[] b = (byte[]) exObject; |
| if (b.length > 0) |
| { |
| if (version != ProtocolVersion.SSL_3) |
| { |
| out.write(b.length >>> 8 & 0xFF); |
| out.write(b.length & 0xFF); |
| } |
| out.write(b); |
| } |
| } |
| else |
| { |
| byte[] bigint = ((BigInteger) exObject).toByteArray(); |
| if (bigint[0] == 0x00) |
| { |
| out.write(bigint.length - 1 >>> 8 & 0xFF); |
| out.write(bigint.length - 1 & 0xFF); |
| out.write(bigint, 1, bigint.length - 1); |
| } |
| else |
| { |
| out.write(bigint.length >>> 8 & 0xFF); |
| out.write(bigint.length & 0xFF); |
| out.write(bigint); |
| } |
| } |
| } |
| |
| Object getExchangeObject() |
| { |
| return exObject; |
| } |
| |
| public String toString() |
| { |
| StringWriter str = new StringWriter(); |
| PrintWriter out = new PrintWriter(str); |
| out.println("struct {"); |
| if (exObject instanceof byte[] && ((byte[]) exObject).length > 0) |
| { |
| out.println(" encryptedPreMasterSecret ="); |
| out.print(Util.hexDump((byte[]) exObject, " ")); |
| } |
| else if (exObject instanceof BigInteger) |
| { |
| out.println(" clientPublic = " + ((BigInteger) exObject).toString(16) + ";"); |
| } |
| out.println("} ClientKeyExchange;"); |
| return str.toString(); |
| } |
| } |