public function decryptNode(XMLSecurityKey $objKey, $replace = TRUE)
{
if (empty($this->rawNode)) {
throw new Exception('Node to decrypt has not been set');
}
if (!$objKey instanceof XMLSecurityKey) {
throw new Exception('Invalid Key');
}
$doc = $this->rawNode->ownerDocument;
$xPath = new DOMXPath($doc);
$xPath->registerNamespace('xmlencr', XMLSecEnc::XMLENCNS);
/* Only handles embedded content right now and not a reference */
$query = "./xmlencr:CipherData/xmlencr:CipherValue";
$nodeset = $xPath->query($query, $this->rawNode);
if ($node = $nodeset->item(0)) {
$encryptedData = base64_decode($node->nodeValue);
$decrypted = $objKey->decryptData($encryptedData);
if ($replace) {
switch ($this->type) {
case XMLSecEnc::Element:
$newdoc = new DOMDocument();
$newdoc->loadXML($decrypted);
if ($this->rawNode->nodeType == XML_DOCUMENT_NODE) {
return $newdoc;
}
$importEnc = $this->rawNode->ownerDocument->importNode($newdoc->documentElement, TRUE);
$this->rawNode->parentNode->replaceChild($importEnc, $this->rawNode);
return $importEnc;
break;
case XMLSecEnc::Content:
if ($this->rawNode->nodeType == XML_DOCUMENT_NODE) {
$doc = $this->rawNode;
} else {
$doc = $this->rawNode->ownerDocument;
}
$newFrag = $doc->createDocumentFragment();
$newFrag->appendXML($decrypted);
$parent = $this->rawNode->parentNode;
$parent->replaceChild($newFrag, $this->rawNode);
return $parent;
break;
default:
return $decrypted;
}
} else {
return $decrypted;
}
} else {
throw new Exception("Cannot locate encrypted data");
}
}
