/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.picketlink.identity.xmlsec.w3.xmldsig;
import java.math.BigInteger;
import java.security.KeyFactory;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.RSAPrivateKeySpec;
import java.security.spec.RSAPublicKeySpec;
import org.picketlink.identity.federation.core.exceptions.ProcessingException;
import org.picketlink.identity.federation.core.util.Base64;
import org.picketlink.identity.federation.core.wstrust.WSTrustConstants;
/**
* <p>
* Java class for RSAKeyValueType complex type.
*
* <p>
* The following schema fragment specifies the expected content contained within this class.
*
* <pre>
* <complexType name="RSAKeyValueType">
* <complexContent>
* <restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
* <sequence>
* <element name="Modulus" type="{http://www.w3.org/2000/09/xmldsig#}CryptoBinary"/>
* <element name="Exponent" type="{http://www.w3.org/2000/09/xmldsig#}CryptoBinary"/>
* </sequence>
* </restriction>
* </complexContent>
* </complexType>
* </pre>
*
*
*/
public class RSAKeyValueType implements KeyValueType {
protected byte[] modulus;
protected byte[] exponent;
/**
* Gets the value of the modulus property.
*
* @return possible object is byte[]
*/
public byte[] getModulus() {
return modulus;
}
/**
* Sets the value of the modulus property.
*
* @param value allowed object is byte[]
*/
public void setModulus(byte[] value) {
this.modulus = ((byte[]) value);
}
/**
* Gets the value of the exponent property.
*
* @return possible object is byte[]
*/
public byte[] getExponent() {
return exponent;
}
/**
* Sets the value of the exponent property.
*
* @param value allowed object is byte[]
*/
public void setExponent(byte[] value) {
this.exponent = ((byte[]) value);
}
/**
* Convert to the JDK representation of a RSA Public Key
* @return
* @throws ProcessingException
*/
public RSAPublicKey convertToPublicKey() throws ProcessingException{
BigInteger bigModulus = new BigInteger(1, massage(Base64.decode(new String(modulus))));
BigInteger bigEx = new BigInteger(1, massage(Base64.decode(new String(exponent))));
try {
KeyFactory rsaKeyFactory = KeyFactory.getInstance("rsa");
RSAPublicKeySpec kspec = new RSAPublicKeySpec(bigModulus,bigEx);
return (RSAPublicKey) rsaKeyFactory.generatePublic(kspec);
} catch (Exception e) {
throw new ProcessingException(e);
}
}
/**
* Convert to the JDK representation of a RSA Private Key
* @return
* @throws ProcessingException
*/
public RSAPrivateKey convertToPrivateKey() throws ProcessingException{
BigInteger bigModulus = new BigInteger(1, massage(Base64.decode(new String(modulus))));
BigInteger bigEx = new BigInteger(1, massage(Base64.decode(new String(exponent))));
try {
KeyFactory rsaKeyFactory = KeyFactory.getInstance("rsa");
RSAPrivateKeySpec kspec = new RSAPrivateKeySpec(bigModulus,bigEx);
return (RSAPrivateKey) rsaKeyFactory.generatePrivate(kspec);
} catch (Exception e) {
throw new ProcessingException(e);
}
}
public String toString(){
String prefix = WSTrustConstants.XMLDSig.DSIG_PREFIX;
String colon = ":";
String left = "<";
String right = ">";
String slash = "/";
StringBuilder sb = new StringBuilder();
sb.append(left).append(prefix).append(colon).append(WSTrustConstants.XMLDSig.RSA_KEYVALUE).append(right);
sb.append(left).append(prefix).append(colon).append(WSTrustConstants.XMLDSig.MODULUS).append(right);
sb.append(new String(getModulus()));
sb.append(left).append(slash).append(prefix).append(colon).append(WSTrustConstants.XMLDSig.MODULUS).append(right);
sb.append(left).append(prefix).append(colon).append(WSTrustConstants.XMLDSig.EXPONENT).append(right);
sb.append(new String(getExponent()));
sb.append(left).append(slash).append(prefix).append(colon).append(WSTrustConstants.XMLDSig.EXPONENT).append(right);
sb.append(left).append(slash).append(prefix).append(colon).append(WSTrustConstants.XMLDSig.RSA_KEYVALUE).append(right);
return sb.toString();
}
private byte[] massage(byte[] byteArray){
if (byteArray[0] == 0){
byte[] substring = new byte[byteArray.length - 1];
System.arraycopy(byteArray, 1, substring, 0, byteArray.length - 1);
return substring;
}
return byteArray;
}
}