public void digest(XMLSignContext signContext) throws XMLSignatureException {
Data data = null;
if (appliedTransformData == null) {
data = dereference(signContext);
} else {
data = appliedTransformData;
}
digestValue = transform(data, signContext);
// insert digestValue into DigestValue element
String encodedDV = Base64.encode(digestValue);
if (log.isLoggable(Level.FINE)) {
log.log(Level.FINE, "Reference object uri = " + uri);
}
Element digestElem = DOMUtils.getLastChildElement(refElem);
if (digestElem == null) {
throw new XMLSignatureException("DigestValue element expected");
}
DOMUtils.removeAllChildren(digestElem);
digestElem.appendChild(refElem.getOwnerDocument().createTextNode(encodedDV));
digested = true;
if (log.isLoggable(Level.FINE)) {
log.log(Level.FINE, "Reference digesting completed");
}
}
