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.XmlGenerator; 066import org.w3c.dom.Document; 067import org.xml.sax.SAXException; 068 069public class DigitalSignatures { 070 071 072 public static void main(String[] args) throws SAXException, IOException, ParserConfigurationException, NoSuchAlgorithmException, InvalidAlgorithmParameterException, KeyException, MarshalException, XMLSignatureException, FHIRException, org.hl7.fhir.exceptions.FHIRException { 073 // http://docs.oracle.com/javase/7/docs/technotes/guides/security/xmldsig/XMLDigitalSignature.html 074 // 075 byte[] inputXml = "<Envelope xmlns=\"urn:envelope\">\r\n</Envelope>\r\n".getBytes(); 076 // load the document that's going to be signed 077 DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); 078 dbf.setNamespaceAware(true); 079 DocumentBuilder builder = dbf.newDocumentBuilder(); 080 Document doc = builder.parse(new ByteArrayInputStream(inputXml)); 081 082 // create a key pair 083 KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA"); 084 kpg.initialize(2048); 085 KeyPair kp = kpg.generateKeyPair(); 086 087 // sign the document 088 DOMSignContext dsc = new DOMSignContext(kp.getPrivate(), doc.getDocumentElement()); 089 XMLSignatureFactory fac = XMLSignatureFactory.getInstance("DOM"); 090 091 Reference ref = fac.newReference("", fac.newDigestMethod(DigestMethod.SHA1, null), Collections.singletonList(fac.newTransform(Transform.ENVELOPED, (TransformParameterSpec) null)), null, null); 092 SignedInfo si = fac.newSignedInfo(fac.newCanonicalizationMethod(CanonicalizationMethod.INCLUSIVE, (C14NMethodParameterSpec) null), fac.newSignatureMethod(SignatureMethod.RSA_SHA1, null), Collections.singletonList(ref)); 093 094 KeyInfoFactory kif = fac.getKeyInfoFactory(); 095 KeyValue kv = kif.newKeyValue(kp.getPublic()); 096 KeyInfo ki = kif.newKeyInfo(Collections.singletonList(kv)); 097 XMLSignature signature = fac.newXMLSignature(si, ki); 098 signature.sign(dsc); 099 100 OutputStream os = System.out; 101 new XmlGenerator().generate(doc.getDocumentElement(), os); 102 } 103}