| /* Signature.java -- SSL signature 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.ByteArrayInputStream; |
| import java.io.DataInputStream; |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| |
| import java.math.BigInteger; |
| |
| import java.security.PublicKey; |
| import java.security.interfaces.RSAKey; |
| |
| import java.util.Arrays; |
| |
| import gnu.java.security.der.*; |
| |
| class Signature implements Constructed |
| { |
| |
| // Fields. |
| // ------------------------------------------------------------------------- |
| |
| private final Object sigValue; |
| private final String sigAlg; |
| |
| // Constructor. |
| // ------------------------------------------------------------------------- |
| |
| Signature(Object sigValue, String sigAlg) |
| { |
| this.sigValue = sigValue; |
| this.sigAlg = sigAlg; |
| } |
| |
| // Class method. |
| // ------------------------------------------------------------------------- |
| |
| static Signature read(InputStream in, CipherSuite suite, PublicKey key) |
| throws IOException |
| { |
| Object sigValue = null; |
| DataInputStream din = new DataInputStream(in); |
| int len = din.readUnsignedShort(); |
| sigValue = new byte[len]; |
| din.readFully((byte[]) sigValue); |
| if (suite.getSignature() == "DSS") |
| { |
| DERReader der = new DERReader(new ByteArrayInputStream((byte[]) sigValue)); |
| if (der.read().getTag() != DER.SEQUENCE) |
| { |
| throw new IOException("expecting DER SEQUENCE"); |
| } |
| BigInteger r = (BigInteger) der.read().getValue(); |
| BigInteger s = (BigInteger) der.read().getValue(); |
| sigValue = new BigInteger[] { r, s }; |
| } |
| return new Signature(sigValue, suite.getSignature()); |
| } |
| |
| // Instance methods. |
| // ------------------------------------------------------------------------- |
| |
| public void write(OutputStream out) throws IOException |
| { |
| write(out, ProtocolVersion.TLS_1); |
| } |
| |
| public void write(OutputStream out, ProtocolVersion version) |
| throws IOException |
| { |
| byte[] result = null; |
| if (sigValue instanceof byte[]) |
| { |
| result = (byte[]) sigValue; |
| } |
| else |
| { |
| DERValue r = new DERValue(DER.INTEGER, ((BigInteger[]) sigValue)[0]); |
| DERValue s = new DERValue(DER.INTEGER, ((BigInteger[]) sigValue)[1]); |
| DERValue sig = new DERValue(DER.SEQUENCE|DER.CONSTRUCTED, |
| Arrays.asList(new Object[] { r, s })); |
| result = sig.getEncoded(); |
| } |
| out.write(result.length >>> 8 & 0xFF); |
| out.write(result.length & 0xFF); |
| out.write(result); |
| } |
| |
| Object getSigValue() |
| { |
| return sigValue; |
| } |
| |
| String getSigAlg() |
| { |
| return sigAlg; |
| } |
| |
| public String toString() |
| { |
| StringWriter str = new StringWriter(); |
| PrintWriter out = new PrintWriter(str); |
| out.println("struct {"); |
| if (sigAlg.equals("RSA")) |
| { |
| out.print(Util.hexDump((byte[]) sigValue, " ")); |
| } |
| else |
| { |
| out.println(" r = " + ((BigInteger[]) sigValue)[0].toString(16) + ";"); |
| out.println(" s = " + ((BigInteger[]) sigValue)[1].toString(16) + ";"); |
| } |
| out.println("} Signature;"); |
| return str.toString(); |
| } |
| } |