} catch (NoSuchAlgorithmException nsae) {
throw new XMLSignatureException(nsae);
}
}
md.reset();
DigesterOutputStream dos;
Boolean cache = (Boolean)
context.getProperty("javax.xml.crypto.dsig.cacheReference");
if (cache != null && cache) {
this.derefData = copyDerefData(dereferencedData);
dos = new DigesterOutputStream(md, true);
} else {
dos = new DigesterOutputStream(md);
}
OutputStream os = null;
Data data = dereferencedData;
try {
os = new UnsyncBufferedOutputStream(dos);
for (int i = 0, size = transforms.size(); i < size; i++) {
DOMTransform transform = (DOMTransform)transforms.get(i);
if (i < size - 1) {
data = transform.transform(data, context);
} else {
data = transform.transform(data, context, os);
}
}
if (data != null) {
XMLSignatureInput xi;
// explicitly use C14N 1.1 when generating signature
// first check system property, then context property
boolean c14n11 = useC14N11;
String c14nalg = CanonicalizationMethod.INCLUSIVE;
if (context instanceof XMLSignContext) {
if (!c14n11) {
Boolean prop = (Boolean)context.getProperty
("org.apache.xml.security.useC14N11");
c14n11 = prop != null && prop;
if (c14n11) {
c14nalg = "http://www.w3.org/2006/12/xml-c14n11";
}
} else {
c14nalg = "http://www.w3.org/2006/12/xml-c14n11";
}
}
if (data instanceof ApacheData) {
xi = ((ApacheData)data).getXMLSignatureInput();
} else if (data instanceof OctetStreamData) {
xi = new XMLSignatureInput
(((OctetStreamData)data).getOctetStream());
} else if (data instanceof NodeSetData) {
TransformService spi = null;
if (provider == null) {
spi = TransformService.getInstance(c14nalg, "DOM");
} else {
try {
spi = TransformService.getInstance(c14nalg, "DOM", provider);
} catch (NoSuchAlgorithmException nsae) {
spi = TransformService.getInstance(c14nalg, "DOM");
}
}
data = spi.transform(data, context);
xi = new XMLSignatureInput
(((OctetStreamData)data).getOctetStream());
} else {
throw new XMLSignatureException("unrecognized Data type");
}
boolean secVal = Utils.secureValidation(context);
xi.setSecureValidation(secVal);
if (context instanceof XMLSignContext && c14n11
&& !xi.isOctetStream() && !xi.isOutputStreamSet()) {
TransformService spi = null;
if (provider == null) {
spi = TransformService.getInstance(c14nalg, "DOM");
} else {
try {
spi = TransformService.getInstance(c14nalg, "DOM", provider);
} catch (NoSuchAlgorithmException nsae) {
spi = TransformService.getInstance(c14nalg, "DOM");
}
}
DOMTransform t = new DOMTransform(spi);
Element transformsElem = null;
String dsPrefix = DOMUtils.getSignaturePrefix(context);
if (allTransforms.isEmpty()) {
transformsElem = DOMUtils.createElement(
refElem.getOwnerDocument(),
"Transforms", XMLSignature.XMLNS, dsPrefix);
refElem.insertBefore(transformsElem,
DOMUtils.getFirstChildElement(refElem));
} else {
transformsElem = DOMUtils.getFirstChildElement(refElem);
}
XmlWriter xwriter = new XmlWriterToTree(Marshaller.getMarshallers(), transformsElem);
t.marshal(xwriter, dsPrefix, context);
allTransforms.add(t);
xi.updateOutputStream(os, true);
} else {
xi.updateOutputStream(os);
}
}
os.flush();
if (cache != null && cache) {
this.dis = dos.getInputStream();
}
return dos.getDigestValue();
} catch (NoSuchAlgorithmException e) {
throw new XMLSignatureException(e);
} catch (TransformException e) {
throw new XMLSignatureException(e);
} catch (MarshalException e) {
throw new XMLSignatureException(e);
} catch (IOException e) {
throw new XMLSignatureException(e);
} catch (org.apache.xml.security.c14n.CanonicalizationException e) {
throw new XMLSignatureException(e);
} finally {
if (os != null) {
try {
os.close();
} catch (IOException e) {
throw new XMLSignatureException(e);
}
}
if (dos != null) {
try {
dos.close();
} catch (IOException e) {
throw new XMLSignatureException(e);
}
}
}