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// Create a DOM XMLSignatureFactory that will be used to
// generate the enveloped signature.
XMLSignatureFactory fac = XMLSignatureFactory.getInstance("DOM"); //$NON-NLS-1$
// Create a Reference to the enveloped document (in this case,
// you are signing the whole document, so a URI of "" signifies
// that, and also specify the SHA1 digest algorithm and
// the ENVELOPED Transform.
Reference ref = fac.newReference("", fac.newDigestMethod(DigestMethod.SHA256, null), //$NON-NLS-1$
Collections.singletonList(fac.newTransform(Transform.ENVELOPED, (TransformParameterSpec) null)), null, null);
// Create the SignedInfo.
SignedInfo si = fac.newSignedInfo(
fac.newCanonicalizationMethod(CanonicalizationMethod.INCLUSIVE, (C14NMethodParameterSpec) null),
fac.newSignatureMethod(SignatureMethod.RSA_SHA1, null),
Collections.singletonList(ref));
// Load the KeyStore and get the signing key and certificate.
KeyStore ks = KeyStore.getInstance("JKS"); //$NON-NLS-1$
ks.load(new FileInputStream(keyStorePath), keyStorePassword.toCharArray());
KeyStore.PrivateKeyEntry keyEntry = (KeyStore.PrivateKeyEntry) ks.getEntry(signKeysAlias,
new KeyStore.PasswordProtection(signKeysAliasPassword.toCharArray()));
X509Certificate cert = (X509Certificate) keyEntry.getCertificate();
// Create the KeyInfo containing the X509Data.
KeyInfoFactory kif = fac.getKeyInfoFactory();
List<Object> x509Content = new ArrayList<Object>();
x509Content.add(cert.getSubjectX500Principal().getName());
x509Content.add(cert);
X509Data xd = kif.newX509Data(x509Content);
KeyInfo ki = kif.newKeyInfo(Collections.singletonList(xd));
// Instantiate the document to be signed.
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
Document doc = dbf.newDocumentBuilder().parse(new FileInputStream(tmpXML));
// Create a DOMSignContext and specify the RSA PrivateKey and
// location of the resulting XMLSignature's parent element.
DOMSignContext dsc = new DOMSignContext(keyEntry.getPrivateKey(), doc.getDocumentElement());
// Create the XMLSignature, but don't sign it yet.
XMLSignature signature = fac.newXMLSignature(si, ki);
// Marshal, generate, and sign the enveloped signature.
signature.sign(dsc); |
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