Java SignedInfo類代碼示例

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
public <T extends Node> T sign(T node) {
	checkNotNull(node);
	checkArgument(node instanceof Document || node instanceof Element);
	try {
		Element element = node instanceof Document ? ((Document) node).getDocumentElement() : (Element) node;
		DOMSignContext dsc = new DOMSignContext(privateKey, element);
		XMLSignatureFactory signatureFactory = XMLSignatureFactory.getInstance("DOM");

		List<Transform> transformList = new LinkedList<>();
		transformList.add(signatureFactory.newTransform(Transform.ENVELOPED, (TransformParameterSpec) null));
		transformList.add(signatureFactory.newTransform(C14N_TRANSFORM_METHOD, (TransformParameterSpec) null));

		Node child = findFirstElementChild(element);
		((Element) child).setIdAttribute("Id", true);

		String id = child.getAttributes().getNamedItem("Id").getNodeValue();
		String uri = String.format("#%s", id);
		Reference reference = signatureFactory.newReference(uri,
				signatureFactory.newDigestMethod(DigestMethod.SHA1, null), transformList, null, null);

		SignedInfo signedInfo = signatureFactory.newSignedInfo(signatureFactory.newCanonicalizationMethod(
				CanonicalizationMethod.INCLUSIVE, (C14NMethodParameterSpec) null), signatureFactory
				.newSignatureMethod(SignatureMethod.RSA_SHA1, null), Collections.singletonList(reference));

		KeyInfoFactory kif = signatureFactory.getKeyInfoFactory();
		X509Data x509Data = kif.newX509Data(Collections.singletonList(certificateChain[0]));
		KeyInfo keyInfo = kif.newKeyInfo(Collections.singletonList(x509Data));

		XMLSignature xmlSignature = signatureFactory.newXMLSignature(signedInfo, keyInfo);

		xmlSignature.sign(dsc);

		return node;
	}
	catch (Exception ex) {
		throw new IllegalArgumentException("Erro ao assinar XML.", ex);
	}
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
public synchronized void sign()
		throws MarshalException,
		XMLSignatureException,
		KeyException {

	if (this.document == null)
		throw new RuntimeException("Can't sign a NULL document");

	Reference reference = this.signatureFactory.newReference(
			referenceUri,
			this.digestMethod,
			this.transformList,
			null,
			null);

	SignedInfo signedInfo = this.signatureFactory.newSignedInfo(
			this.canonicalizationMethod,
			this.signatureMethod,
			Collections.singletonList(reference));

	// Create the KeyInfo containing the X509Data.
	X509Data xd = this.keyInfoFactory.newX509Data(
			Collections.singletonList(this.certificateWithKey.certificate));

	KeyInfo keyInfo = this.keyInfoFactory.newKeyInfo(Collections.singletonList(xd));

	XMLSignature signature = this.signatureFactory.newXMLSignature(
			signedInfo,
			keyInfo);

	DOMSignContext signingContext = new DOMSignContext(
			this.certificateWithKey.privateKey,
			document.getDocumentElement());

	signature.sign(signingContext);
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
/**
 * Sign SAML element.
 *
 * @param element the element
 * @param privKey the priv key
 * @param pubKey  the pub key
 * @return the element
 */
private static org.jdom.Element signSamlElement(final org.jdom.Element element, final PrivateKey privKey, final PublicKey pubKey) {
    try {
        final String providerName = System.getProperty("jsr105Provider", SIGNATURE_FACTORY_PROVIDER_CLASS);

        final XMLSignatureFactory sigFactory = XMLSignatureFactory
                .getInstance("DOM", (Provider) Class.forName(providerName).newInstance());

        final List<Transform> envelopedTransform = Collections.singletonList(sigFactory.newTransform(Transform.ENVELOPED,
                (TransformParameterSpec) null));

        final Reference ref = sigFactory.newReference(StringUtils.EMPTY, sigFactory
                .newDigestMethod(DigestMethod.SHA1, null), envelopedTransform, null, null);

        // Create the SignatureMethod based on the type of key
        final SignatureMethod signatureMethod;
        final String algorithm = pubKey.getAlgorithm();
        switch (algorithm) {
            case "DSA":
                signatureMethod = sigFactory.newSignatureMethod(SignatureMethod.DSA_SHA1, null);
                break;
            case "RSA":
                signatureMethod = sigFactory.newSignatureMethod(SignatureMethod.RSA_SHA1, null);
                break;
            default:
                throw new RuntimeException("Error signing SAML element: Unsupported type of key");
        }

        final CanonicalizationMethod canonicalizationMethod = sigFactory
                .newCanonicalizationMethod(
                        CanonicalizationMethod.INCLUSIVE_WITH_COMMENTS,
                        (C14NMethodParameterSpec) null);

        // Create the SignedInfo
        final SignedInfo signedInfo = sigFactory.newSignedInfo(
                canonicalizationMethod, signatureMethod, Collections.singletonList(ref));

        // Create a KeyValue containing the DSA or RSA PublicKey
        final KeyInfoFactory keyInfoFactory = sigFactory.getKeyInfoFactory();
        final KeyValue keyValuePair = keyInfoFactory.newKeyValue(pubKey);

        // Create a KeyInfo and add the KeyValue to it
        final KeyInfo keyInfo = keyInfoFactory.newKeyInfo(Collections.singletonList(keyValuePair));
        // Convert the JDOM document to w3c (Java XML signature API requires w3c representation)
        final Element w3cElement = toDom(element);

        // Create a DOMSignContext and specify the DSA/RSA PrivateKey and
        // location of the resulting XMLSignature's parent element
        final DOMSignContext dsc = new DOMSignContext(privKey, w3cElement);

        final Node xmlSigInsertionPoint = getXmlSignatureInsertLocation(w3cElement);
        dsc.setNextSibling(xmlSigInsertionPoint);

        // Marshal, generate (and sign) the enveloped signature
        final XMLSignature signature = sigFactory.newXMLSignature(signedInfo, keyInfo);
        signature.sign(dsc);

        return toJdom(w3cElement);

    } catch (final Exception e) {
        throw new RuntimeException("Error signing SAML element: " + e.getMessage(), e);
    }
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
synchronized void sign ( final Key privateKey, final PublicKey publicKey, final Certificate cert, final Document doc ) throws Exception
{
    final DOMSignContext dsc = new DOMSignContext ( privateKey, doc.getDocumentElement () );

    final SignatureMethod sm = this.fac.newSignatureMethod ( fromAlg ( privateKey.getAlgorithm () ), null );

    final SignedInfo si = this.fac.newSignedInfo ( this.cm, sm, Collections.singletonList ( this.ref ) );

    final List<Object> data = new LinkedList<Object> ();

    if ( cert != null )
    {
        data.add ( this.kif.newKeyValue ( cert.getPublicKey () ) );
        data.add ( this.kif.newX509Data ( Collections.singletonList ( cert ) ) );
    }
    else
    {
        data.add ( this.kif.newKeyValue ( publicKey ) );
    }

    final KeyInfo ki = this.kif.newKeyInfo ( data );

    final XMLSignature signature = this.fac.newXMLSignature ( si, ki );

    // finally sign
    signature.sign ( dsc );
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
public Document sign(FileInputStream fileStream, KeyPair keyPair)
        throws ParserConfigurationException, SAXException, IOException,
        NoSuchAlgorithmException, InvalidAlgorithmParameterException,
        KeyException, MarshalException, XMLSignatureException {

    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setNamespaceAware(true);

    DocumentBuilder builder = factory.newDocumentBuilder();
    Document document = builder.parse(fileStream);

    DOMSignContext signContext = new DOMSignContext(keyPair.getPrivate(),
            document.getDocumentElement());
    XMLSignatureFactory signFactory = XMLSignatureFactory
            .getInstance("DOM");
    Reference ref = signFactory.newReference("", signFactory
            .newDigestMethod(digestMethod, null), Collections
            .singletonList(signFactory.newTransform(Transform.ENVELOPED,
                    (TransformParameterSpec) null)), null, null);
    SignedInfo si = signFactory.newSignedInfo(signFactory
            .newCanonicalizationMethod(
                    CanonicalizationMethod.INCLUSIVE_WITH_COMMENTS,
                    (C14NMethodParameterSpec) null), signFactory
            .newSignatureMethod(signatureMethod, null), Collections
            .singletonList(ref));

    KeyInfoFactory kif = signFactory.getKeyInfoFactory();
    KeyValue kv = kif.newKeyValue(keyPair.getPublic());
    KeyInfo ki = kif.newKeyInfo(Collections.singletonList(kv));

    XMLSignature signature = signFactory.newXMLSignature(si, ki);
    signature.sign(signContext);

    return document;
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
private void test_create_signature_enveloping(
    SignatureMethod sm, DigestMethod dm, KeyInfo ki, Key signingKey, KeySelector ks
) throws Exception {

    // create reference
    Reference ref = fac.newReference("#DSig.Object_1", dm, null,
                                     XMLObject.TYPE, null);

    // create SignedInfo
    SignedInfo si = fac.newSignedInfo(withoutComments, sm,
                                      Collections.singletonList(ref));

    Document doc = db.newDocument();
    // create Objects
    Element webElem = doc.createElementNS(null, "Web");
    Text text = doc.createTextNode("up up and away");
    webElem.appendChild(text);
    XMLObject obj = fac.newXMLObject(Collections.singletonList
                                     (new DOMStructure(webElem)), "DSig.Object_1", "text/xml", null);

    // create XMLSignature
    XMLSignature sig = fac.newXMLSignature
    (si, ki, Collections.singletonList(obj), null, null);

    DOMSignContext dsc = new DOMSignContext(signingKey, doc);
    dsc.setDefaultNamespacePrefix("dsig");

    sig.sign(dsc);
    TestUtils.validateSecurityOrEncryptionElement(doc.getDocumentElement());

    // XMLUtils.outputDOM(doc.getDocumentElement(), System.out);

    DOMValidateContext dvc = new DOMValidateContext
    (ks, doc.getDocumentElement());
    XMLSignature sig2 = fac.unmarshalXMLSignature(dvc);

    assertTrue(sig.equals(sig2));
    assertTrue(sig2.validate(dvc));
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
public String assinarDocumento(final String conteudoXml) throws Exception {
    final KeyStore keyStore = KeyStore.getInstance("PKCS12");
    try (InputStream certificadoStream = new ByteArrayInputStream(this.config.getCertificado())) {
        keyStore.load(certificadoStream, this.config.getCertificadoSenha().toCharArray());
    }

    final KeyStore.PrivateKeyEntry keyEntry = (KeyStore.PrivateKeyEntry) keyStore.getEntry(keyStore.aliases().nextElement(), new KeyStore.PasswordProtection(this.config.getCertificadoSenha().toCharArray()));
    final XMLSignatureFactory signatureFactory = XMLSignatureFactory.getInstance("DOM");

    final List<Transform> transforms = new ArrayList<>(2);
    transforms.add(signatureFactory.newTransform(Transform.ENVELOPED, (TransformParameterSpec) null));
    transforms.add(signatureFactory.newTransform(AssinaturaDigital.C14N_TRANSFORM_METHOD, (TransformParameterSpec) null));

    final KeyInfoFactory keyInfoFactory = signatureFactory.getKeyInfoFactory();
    final X509Data x509Data = keyInfoFactory.newX509Data(Collections.singletonList((X509Certificate) keyEntry.getCertificate()));
    final KeyInfo keyInfo = keyInfoFactory.newKeyInfo(Collections.singletonList(x509Data));

    final DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
    documentBuilderFactory.setNamespaceAware(true);

    try (StringReader stringReader = new StringReader(conteudoXml)) {
        final Document document = documentBuilderFactory.newDocumentBuilder().parse(new InputSource(stringReader));
        for (final String elementoAssinavel : AssinaturaDigital.ELEMENTOS_ASSINAVEIS) {
            final NodeList elements = document.getElementsByTagName(elementoAssinavel);
            for (int i = 0; i < elements.getLength(); i++) {
                final Element element = (Element) elements.item(i);
                final String id = element.getAttribute("Id");
                element.setIdAttribute("Id", true);

                final Reference reference = signatureFactory.newReference("#" + id, signatureFactory.newDigestMethod(DigestMethod.SHA1, null), transforms, null, null);
                final SignedInfo signedInfo = signatureFactory.newSignedInfo(signatureFactory.newCanonicalizationMethod(CanonicalizationMethod.INCLUSIVE, (C14NMethodParameterSpec) null), signatureFactory.newSignatureMethod(SignatureMethod.RSA_SHA1, null), Collections.singletonList(reference));

                final XMLSignature signature = signatureFactory.newXMLSignature(signedInfo, keyInfo);
                signature.sign(new DOMSignContext(keyEntry.getPrivateKey(), element.getParentNode()));
            }
        }
        return this.converteDocumentParaXml(document);
    }
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
private Element signSignature(String id, Element env, KeyInfoFactory keyInfoFactory, X509Credential credential) throws NoSuchAlgorithmException, InvalidAlgorithmParameterException, MarshalException, XMLSignatureException {
	if (endorsingToken == null) return env;
	
	NodeList nl = env.getElementsByTagNameNS(XMLSignature.XMLNS, "Signature");
	for (int i = 0; i < nl.getLength(); i++) {
		Element e = (Element) nl.item(i);
		if (e.hasAttributeNS(null, "Id")) {
			e.setAttributeNS(WSSecurityConstants.WSU_NS, "Id", e.getAttribute("Id"));
			e.setIdAttributeNS(WSSecurityConstants.WSU_NS, "Id", true);
		}
	}
	env = SAMLUtil.loadElementFromString(XMLHelper.nodeToString(env));
	
	
	DigestMethod digestMethod = xsf.newDigestMethod(DigestMethod.SHA1, null);
	List<Transform> transforms = new ArrayList<Transform>(2);
	transforms.add(xsf.newTransform("http://www.w3.org/2001/10/xml-exc-c14n#",new ExcC14NParameterSpec(Collections.singletonList("xsd"))));


   	List<Reference> refs = new ArrayList<Reference>();
   	Reference r = xsf.newReference("#"+id, digestMethod, transforms, null, null);
   	refs.add(r);
   	
	CanonicalizationMethod canonicalizationMethod = xsf.newCanonicalizationMethod(CanonicalizationMethod.EXCLUSIVE, (C14NMethodParameterSpec) null);
	SignatureMethod signatureMethod = xsf.newSignatureMethod(SignatureMethod.RSA_SHA1, null);
   	SignedInfo signedInfo = xsf.newSignedInfo(canonicalizationMethod, signatureMethod, refs);
   	
   	KeyInfo ki = generateKeyInfo(credential, keyInfoFactory, false);
	XMLSignature signature = xsf.newXMLSignature(signedInfo, ki);

       Node security = env.getElementsByTagNameNS(WSSecurityConstants.WSSE_NS, "Security").item(0);
       
       DOMSignContext signContext = new DOMSignContext(credential.getPrivateKey(), security); 
       signContext.putNamespacePrefix(SAMLConstants.XMLSIG_NS, SAMLConstants.XMLSIG_PREFIX);
       signContext.putNamespacePrefix(SAMLConstants.XMLENC_NS, SAMLConstants.XMLENC_PREFIX);
       
       signature.sign(signContext);
       
       return env;
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
private void sign(KeyStore keyStore, KeyPair keyPair, String alias, Document document, List<EbMSDataSource> dataSources) throws NoSuchAlgorithmException, InvalidAlgorithmParameterException, IOException, KeyException, MarshalException, XMLSignatureException, KeyStoreException
{
	//XMLSignatureFactory signFactory = XMLSignatureFactory.getInstance("DOM");
	XMLSignatureFactory signFactory = XMLSignatureFactory.getInstance();
	DigestMethod sha1DigestMethod = signFactory.newDigestMethod(DigestMethod.SHA1,null);
	
	List<Transform> transforms = new ArrayList<Transform>();
	transforms.add(signFactory.newTransform(Transform.ENVELOPED,(TransformParameterSpec)null));
	Map<String,String> m = new HashMap<String,String>();
	m.put("soap","http://schemas.xmlsoap.org/soap/envelope/");
	transforms.add(signFactory.newTransform(Transform.XPATH,new XPathFilterParameterSpec("not(ancestor-or-self::node()[@soap:actor=\"urn:oasis:names:tc:ebxml-msg:service:nextMSH\"]|ancestor-or-self::node()[@soap:actor=\"http://schemas.xmlsoap.org/soap/actor/next\"])",m)));
	transforms.add(signFactory.newTransform(CanonicalizationMethod.INCLUSIVE,(TransformParameterSpec)null));
	
	List<Reference> references = new ArrayList<Reference>();
	references.add(signFactory.newReference("",sha1DigestMethod,transforms,null,null));
	
	for (EbMSDataSource dataSource : dataSources)
		references.add(signFactory.newReference("cid:" + dataSource.getContentId(),sha1DigestMethod,Collections.emptyList(),null,null,DigestUtils.sha(IOUtils.toByteArray(dataSource.getInputStream()))));
	
	SignedInfo signedInfo = signFactory.newSignedInfo(signFactory.newCanonicalizationMethod(CanonicalizationMethod.INCLUSIVE,(C14NMethodParameterSpec)null),signFactory.newSignatureMethod(SignatureMethod.RSA_SHA1,null),references);
	
	List<XMLStructure> keyInfoElements = new ArrayList<XMLStructure>();
	KeyInfoFactory keyInfoFactory = signFactory.getKeyInfoFactory();
	keyInfoElements.add(keyInfoFactory.newKeyValue(keyPair.getPublic()));
	
	Certificate[] certificates = keyStore.getCertificateChain(alias);
	//keyInfoElements.add(keyInfoFactory.newX509Data(Arrays.asList(certificates)));
	keyInfoElements.add(keyInfoFactory.newX509Data(Collections.singletonList(certificates[0])));
	
	KeyInfo keyInfo = keyInfoFactory.newKeyInfo(keyInfoElements);
	
	XMLSignature signature = signFactory.newXMLSignature(signedInfo,keyInfo);
	
	Element soapHeader = getFirstChildElement(document.getDocumentElement());
	DOMSignContext signContext = new DOMSignContext(keyPair.getPrivate(),soapHeader);
	signContext.putNamespacePrefix(XMLSignature.XMLNS,"ds");
	signature.sign(signContext);
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
private void signRequest(Element requestElement, PrivateKey privateKey,
		X509Certificate certificate) throws NoSuchAlgorithmException,
		InvalidAlgorithmParameterException, MarshalException,
		XMLSignatureException {
	DOMSignContext domSignContext = new DOMSignContext(privateKey,
			requestElement, requestElement.getFirstChild());
	XMLSignatureFactory xmlSignatureFactory = XMLSignatureFactory
			.getInstance("DOM");

	String requestId = requestElement.getAttribute("RequestID");
	requestElement.setIdAttribute("RequestID", true);

	List<Transform> transforms = new LinkedList<>();
	transforms.add(xmlSignatureFactory.newTransform(Transform.ENVELOPED,
			(TransformParameterSpec) null));
	transforms.add(xmlSignatureFactory.newTransform(
			CanonicalizationMethod.EXCLUSIVE,
			(C14NMethodParameterSpec) null));
	Reference reference = xmlSignatureFactory.newReference("#" + requestId,
			xmlSignatureFactory.newDigestMethod(DigestMethod.SHA1, null),
			transforms, null, null);

	SignedInfo signedInfo = xmlSignatureFactory.newSignedInfo(
			xmlSignatureFactory.newCanonicalizationMethod(
					CanonicalizationMethod.EXCLUSIVE,
					(C14NMethodParameterSpec) null), xmlSignatureFactory
					.newSignatureMethod(SignatureMethod.RSA_SHA1, null),
			Collections.singletonList(reference));

	KeyInfoFactory keyInfoFactory = xmlSignatureFactory.getKeyInfoFactory();
	KeyInfo keyInfo = keyInfoFactory.newKeyInfo(Collections
			.singletonList(keyInfoFactory.newX509Data(Collections
					.singletonList(certificate))));

	XMLSignature xmlSignature = xmlSignatureFactory.newXMLSignature(
			signedInfo, keyInfo);
	xmlSignature.sign(domSignContext);
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
private void addSignature(Element parentElement)
		throws NoSuchAlgorithmException,
		InvalidAlgorithmParameterException, MarshalException,
		XMLSignatureException {
	DOMSignContext domSignContext = new DOMSignContext(
			this.sessionKey.getPrivate(), parentElement);
	XMLSignatureFactory xmlSignatureFactory = XMLSignatureFactory
			.getInstance("DOM");

	Reference reference = xmlSignatureFactory.newReference("#"
			+ this.prototypeKeyBindingId, xmlSignatureFactory
			.newDigestMethod(DigestMethod.SHA1, null), Collections
			.singletonList(xmlSignatureFactory.newTransform(
					CanonicalizationMethod.EXCLUSIVE,
					(TransformParameterSpec) null)), null, null);

	SignedInfo signedInfo = xmlSignatureFactory.newSignedInfo(
			xmlSignatureFactory.newCanonicalizationMethod(
					CanonicalizationMethod.EXCLUSIVE,
					(C14NMethodParameterSpec) null), xmlSignatureFactory
					.newSignatureMethod(SignatureMethod.RSA_SHA1, null),
			Collections.singletonList(reference));

	XMLSignature xmlSignature = xmlSignatureFactory.newXMLSignature(
			signedInfo, null);
	xmlSignature.sign(domSignContext);
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
private void addSignature(Element parentElement)
		throws NoSuchAlgorithmException,
		InvalidAlgorithmParameterException, MarshalException,
		XMLSignatureException {
	DOMSignContext domSignContext = new DOMSignContext(
			this.authnPrivateKey, parentElement);
	XMLSignatureFactory xmlSignatureFactory = XMLSignatureFactory
			.getInstance("DOM");

	Reference reference = xmlSignatureFactory.newReference(
			this.referenceUri, xmlSignatureFactory.newDigestMethod(
					DigestMethod.SHA1, null), Collections
					.singletonList(xmlSignatureFactory.newTransform(
							CanonicalizationMethod.EXCLUSIVE,
							(TransformParameterSpec) null)), null, null);

	SignedInfo signedInfo = xmlSignatureFactory.newSignedInfo(
			xmlSignatureFactory.newCanonicalizationMethod(
					CanonicalizationMethod.EXCLUSIVE,
					(C14NMethodParameterSpec) null), xmlSignatureFactory
					.newSignatureMethod(SignatureMethod.RSA_SHA1, null),
			Collections.singletonList(reference));

	KeyInfoFactory keyInfoFactory = xmlSignatureFactory.getKeyInfoFactory();
	KeyInfo keyInfo = keyInfoFactory.newKeyInfo(Collections
			.singletonList(keyInfoFactory.newX509Data(Collections
					.singletonList(this.authnCertificate))));

	XMLSignature xmlSignature = xmlSignatureFactory.newXMLSignature(
			signedInfo, keyInfo);
	xmlSignature.sign(domSignContext);
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
public static void main(String[] args) throws SAXException, IOException, ParserConfigurationException, NoSuchAlgorithmException, InvalidAlgorithmParameterException, KeyException, MarshalException, XMLSignatureException, FHIRException, org.hl7.fhir.exceptions.FHIRException {
  // http://docs.oracle.com/javase/7/docs/technotes/guides/security/xmldsig/XMLDigitalSignature.html
  //
  byte[] inputXml = "<Envelope xmlns=\"urn:envelope\">\r\n</Envelope>\r\n".getBytes();
  // load the document that's going to be signed
  DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); 
  dbf.setNamespaceAware(true);
  DocumentBuilder builder = dbf.newDocumentBuilder();  
  Document doc = builder.parse(new ByteArrayInputStream(inputXml)); 
  
  // create a key pair
  KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
  kpg.initialize(512);
  KeyPair kp = kpg.generateKeyPair(); 
  
  // sign the document
  DOMSignContext dsc = new DOMSignContext(kp.getPrivate(), doc.getDocumentElement()); 
  XMLSignatureFactory fac = XMLSignatureFactory.getInstance("DOM"); 
 
  Reference ref = fac.newReference("", fac.newDigestMethod(DigestMethod.SHA1, null), Collections.singletonList(fac.newTransform(Transform.ENVELOPED, (TransformParameterSpec) null)), null, null);
  SignedInfo si = fac.newSignedInfo(fac.newCanonicalizationMethod(CanonicalizationMethod.INCLUSIVE, (C14NMethodParameterSpec) null), fac.newSignatureMethod(SignatureMethod.RSA_SHA1, null), Collections.singletonList(ref));
  
  KeyInfoFactory kif = fac.getKeyInfoFactory(); 
  KeyValue kv = kif.newKeyValue(kp.getPublic());
  KeyInfo ki = kif.newKeyInfo(Collections.singletonList(kv));
  XMLSignature signature = fac.newXMLSignature(si, ki); 
  signature.sign(dsc);
  
  OutputStream os = System.out;
  new XmlGenerator().generate(doc.getDocumentElement(), os);
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
private static void sign(Document document, DigitalSignatureServiceSession session) throws NoSuchAlgorithmException,
		InvalidAlgorithmParameterException, MarshalException, XMLSignatureException {
	Key key = new SecretKeySpec(session.getKey(), "HMACSHA1");
	Node parentElement = document.getElementsByTagNameNS("urn:oasis:names:tc:dss:1.0:core:schema", "OptionalInputs")
			.item(0);
	DOMSignContext domSignContext = new DOMSignContext(key, parentElement);
	domSignContext.setDefaultNamespacePrefix("ds");
	// XMLDSigRI Websphere work-around
	XMLSignatureFactory xmlSignatureFactory = XMLSignatureFactory.getInstance("DOM", new XMLDSigRI());

	List<Transform> transforms = new LinkedList<Transform>();
	transforms.add(xmlSignatureFactory.newTransform(Transform.ENVELOPED, (TransformParameterSpec) null));
	transforms.add(
			xmlSignatureFactory.newTransform(CanonicalizationMethod.EXCLUSIVE, (C14NMethodParameterSpec) null));
	Reference reference = xmlSignatureFactory.newReference("",
			xmlSignatureFactory.newDigestMethod(DigestMethod.SHA1, null), transforms, null, null);

	SignedInfo signedInfo = xmlSignatureFactory.newSignedInfo(
			xmlSignatureFactory.newCanonicalizationMethod(CanonicalizationMethod.EXCLUSIVE,
					(C14NMethodParameterSpec) null),
			xmlSignatureFactory.newSignatureMethod(SignatureMethod.HMAC_SHA1, null),
			Collections.singletonList(reference));

	Element securityTokenReferenceElement = getSecurityTokenReference(session);

	KeyInfoFactory keyInfoFactory = xmlSignatureFactory.getKeyInfoFactory();
	DOMStructure securityTokenReferenceDOMStructure = new DOMStructure(securityTokenReferenceElement);
	KeyInfo keyInfo = keyInfoFactory.newKeyInfo(Collections.singletonList(securityTokenReferenceDOMStructure));

	XMLSignature xmlSignature = xmlSignatureFactory.newXMLSignature(signedInfo, keyInfo);
	xmlSignature.sign(domSignContext);
}
 

import javax.xml.crypto.dsig.SignedInfo; //導入依賴的package包/類
private SignedInfo initSignedInfo(XMLSignatureFactory fac) throws Exception {
        Reference ref = initReference(fac);
        String cm = null;
        cm = map.getProperty(CANONICALIZATIONMETHOD);
        String sigmethod = null;
        sigmethod = map.getProperty(SIGNATURE_METHOD);
        if (sigmethod == null) {
                sigmethod = SignatureMethod.RSA_SHA1;
        }
        if (cm == null) {
                cm = CanonicalizationMethod.EXCLUSIVE;
        }
        SignedInfo si = fac.newSignedInfo(fac.newCanonicalizationMethod(
                cm,
                (C14NMethodParameterSpec) null),
                fac.newSignatureMethod(sigmethod,
                        null), Collections.singletonList(ref));
        return si;
}