001package org.hl7.fhir.dstu3.utils;
002
003/*
004  Copyright (c) 2011+, HL7, Inc.
005  All rights reserved.
006  
007  Redistribution and use in source and binary forms, with or without modification, 
008  are permitted provided that the following conditions are met:
009    
010   * Redistributions of source code must retain the above copyright notice, this 
011     list of conditions and the following disclaimer.
012   * Redistributions in binary form must reproduce the above copyright notice, 
013     this list of conditions and the following disclaimer in the documentation 
014     and/or other materials provided with the distribution.
015   * Neither the name of HL7 nor the names of its contributors may be used to 
016     endorse or promote products derived from this software without specific 
017     prior written permission.
018  
019  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
020  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
021  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
022  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
023  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
024  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
025  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
026  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
027  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
028  POSSIBILITY OF SUCH DAMAGE.
029  
030 */
031
032
033
034import java.io.ByteArrayInputStream;
035import java.io.IOException;
036import java.io.OutputStream;
037import java.security.InvalidAlgorithmParameterException;
038import java.security.KeyException;
039import java.security.KeyPair;
040import java.security.KeyPairGenerator;
041import java.security.NoSuchAlgorithmException;
042import java.util.Collections;
043
044import javax.xml.crypto.MarshalException;
045import javax.xml.crypto.dsig.CanonicalizationMethod;
046import javax.xml.crypto.dsig.DigestMethod;
047import javax.xml.crypto.dsig.Reference;
048import javax.xml.crypto.dsig.SignatureMethod;
049import javax.xml.crypto.dsig.SignedInfo;
050import javax.xml.crypto.dsig.Transform;
051import javax.xml.crypto.dsig.XMLSignature;
052import javax.xml.crypto.dsig.XMLSignatureException;
053import javax.xml.crypto.dsig.XMLSignatureFactory;
054import javax.xml.crypto.dsig.dom.DOMSignContext;
055import javax.xml.crypto.dsig.keyinfo.KeyInfo;
056import javax.xml.crypto.dsig.keyinfo.KeyInfoFactory;
057import javax.xml.crypto.dsig.keyinfo.KeyValue;
058import javax.xml.crypto.dsig.spec.C14NMethodParameterSpec;
059import javax.xml.crypto.dsig.spec.TransformParameterSpec;
060import javax.xml.parsers.DocumentBuilder;
061import javax.xml.parsers.DocumentBuilderFactory;
062import javax.xml.parsers.ParserConfigurationException;
063
064import org.hl7.fhir.exceptions.FHIRException;
065import org.hl7.fhir.utilities.xml.XMLUtil;
066import org.hl7.fhir.utilities.xml.XmlGenerator;
067import org.w3c.dom.Document;
068import org.xml.sax.SAXException;
069
070@Deprecated
071public class DigitalSignatures {
072
073
074  public static void main(String[] args) throws SAXException, IOException, ParserConfigurationException, NoSuchAlgorithmException, InvalidAlgorithmParameterException, KeyException, MarshalException, XMLSignatureException, FHIRException, org.hl7.fhir.exceptions.FHIRException {
075    // http://docs.oracle.com/javase/7/docs/technotes/guides/security/xmldsig/XMLDigitalSignature.html
076    //
077    byte[] inputXml = "<Envelope xmlns=\"urn:envelope\">\r\n</Envelope>\r\n".getBytes();
078    // load the document that's going to be signed
079    DocumentBuilderFactory dbf = XMLUtil.newXXEProtectedDocumentBuilderFactory();
080    dbf.setNamespaceAware(true);
081    DocumentBuilder builder = dbf.newDocumentBuilder();  
082    Document doc = builder.parse(new ByteArrayInputStream(inputXml)); 
083    
084    // create a key pair
085    KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
086    kpg.initialize(2048);
087    KeyPair kp = kpg.generateKeyPair(); 
088    
089    // sign the document
090    DOMSignContext dsc = new DOMSignContext(kp.getPrivate(), doc.getDocumentElement()); 
091    XMLSignatureFactory fac = XMLSignatureFactory.getInstance("DOM"); 
092   
093    Reference ref = fac.newReference("", fac.newDigestMethod(DigestMethod.SHA1, null), Collections.singletonList(fac.newTransform(Transform.ENVELOPED, (TransformParameterSpec) null)), null, null);
094    SignedInfo si = fac.newSignedInfo(fac.newCanonicalizationMethod(CanonicalizationMethod.INCLUSIVE, (C14NMethodParameterSpec) null), fac.newSignatureMethod(SignatureMethod.RSA_SHA1, null), Collections.singletonList(ref));
095    
096    KeyInfoFactory kif = fac.getKeyInfoFactory(); 
097    KeyValue kv = kif.newKeyValue(kp.getPublic());
098    KeyInfo ki = kif.newKeyInfo(Collections.singletonList(kv));
099    XMLSignature signature = fac.newXMLSignature(si, ki); 
100    signature.sign(dsc);
101    
102    OutputStream os = System.out;
103    new XmlGenerator().generate(doc.getDocumentElement(), os);
104  }
105}