internal void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl);
XmlNodeList transformNodes = value.SelectNodes("ds:Transform", nsm);
if (transformNodes.Count == 0)
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Transforms");
}
_transforms.Clear();
for (int i = 0; i < transformNodes.Count; ++i)
{
XmlElement transformElement = (XmlElement)transformNodes.Item(i);
string algorithm = Utils.GetAttribute(transformElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl);
Transform transform = CryptoHelpers.CreateFromName <Transform>(algorithm);
if (transform == null)
{
throw new CryptographicException(SR.Cryptography_Xml_UnknownTransform);
}
// let the transform read the children of the transformElement for data
transform.LoadInnerXml(transformElement.ChildNodes);
_transforms.Add(transform);
}
}
public override void LoadInnerXml(XmlNodeList nodeList)
{
if (nodeList != null)
{
foreach (XmlNode n in nodeList)
{
XmlElement e = n as XmlElement;
if (e != null)
{
if (e.LocalName.Equals("InclusiveNamespaces") &&
e.NamespaceURI.Equals(SignedXml.XmlDsigExcC14NTransformUrl) &&
Utils.HasAttribute(e, "PrefixList", SignedXml.XmlDsigNamespaceUrl))
{
if (!Utils.VerifyAttributes(e, "PrefixList"))
{
throw new CryptographicException(SR.Cryptography_Xml_UnknownTransform);
}
this.InclusiveNamespacesPrefixList = Utils.GetAttribute(e, "PrefixList", SignedXml.XmlDsigNamespaceUrl);
return;
}
else
{
throw new CryptographicException(SR.Cryptography_Xml_UnknownTransform);
}
}
}
}
}
public override void LoadInnerXml(XmlNodeList nodeList)
{
if (nodeList == null)
{
throw new CryptographicException(SR.Cryptography_Xml_UnknownTransform);
}
ExceptUris.Clear();
foreach (XmlNode node in nodeList)
{
XmlElement elem = node as XmlElement;
if (elem != null)
{
if (elem.LocalName == "Except" && elem.NamespaceURI == XmlDecryptionTransformNamespaceUrl)
{
// the Uri is required
string uri = Utils.GetAttribute(elem, "URI", XmlDecryptionTransformNamespaceUrl);
if (uri == null || uri.Length == 0 || uri[0] != '#')
{
throw new CryptographicException(SR.Cryptography_Xml_UriRequired);
}
if (!Utils.VerifyAttributes(elem, "URI"))
{
throw new CryptographicException(SR.Cryptography_Xml_UnknownTransform);
}
string idref = Utils.ExtractIdFromLocalUri(uri);
ExceptUris.Add(idref);
}
else
{
throw new CryptographicException(SR.Cryptography_Xml_UnknownTransform);
}
}
}
}
public override void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
this.ReferenceType = value.LocalName;
string uri = Utils.GetAttribute(value, "URI", EncryptedXml.XmlEncNamespaceUrl);
if (!Utils.GetSkipSignatureAttributeEnforcement() && uri == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_UriRequired"));
}
this.Uri = uri;
// Transforms
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("enc", EncryptedXml.XmlEncNamespaceUrl);
XmlNode transformsNode = value.SelectSingleNode("enc:Transforms", nsm);
if (transformsNode != null)
{
this.TransformChain.LoadXml(transformsNode as XmlElement);
}
// cache the Xml
m_cachedXml = value;
}
public override void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
ReferenceType = value.LocalName;
string uri = Utils.GetAttribute(value, "URI", EncryptedXml.XmlEncNamespaceUrl);
Uri = uri ?? throw new CryptographicException(SR.Cryptography_Xml_UriRequired);
// Transforms
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("enc", EncryptedXml.XmlEncNamespaceUrl);
XmlNode transformsNode = value.SelectSingleNode("enc:Transforms", nsm);
if (transformsNode != null)
{
TransformChain.LoadXml(transformsNode as XmlElement);
}
// cache the Xml
_cachedXml = value;
}
public void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("enc", EncryptedXml.XmlEncNamespaceUrl);
XmlElement encryptionMethodElement = value;
_algorithm = Utils.GetAttribute(encryptionMethodElement, "Algorithm", EncryptedXml.XmlEncNamespaceUrl);
XmlNode keySizeNode = value.SelectSingleNode("enc:KeySize", nsm);
if (keySizeNode != null)
{
KeySize = Convert.ToInt32(Utils.DiscardWhiteSpaces(keySizeNode.InnerText), null);
}
// Save away the cached value
_cachedXml = value;
}
public void LoadXml(XmlElement value)
{
if (value is null)
{
throw new ArgumentNullException(nameof(value));
}
XmlElement keyInfoElement = value;
_id = Utils.GetAttribute(keyInfoElement, "Id", SignedXml.XmlDsigNamespaceUrl);
if (!Utils.VerifyAttributes(keyInfoElement, "Id"))
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "KeyInfo");
}
XmlNode child = keyInfoElement.FirstChild;
while (child != null)
{
XmlElement elem = child as XmlElement;
if (elem != null)
{
// Create the right type of KeyInfoClause; we use a combination of the namespace and tag name (local name)
string kicString = elem.NamespaceURI + " " + elem.LocalName;
// Special-case handling for KeyValue -- we have to go one level deeper
if (kicString == "http://www.w3.org/2000/09/xmldsig# KeyValue")
{
if (!Utils.VerifyAttributes(elem, (string[])null))
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "KeyInfo/KeyValue");
}
XmlNodeList nodeList2 = elem.ChildNodes;
foreach (XmlNode node2 in nodeList2)
{
XmlElement elem2 = node2 as XmlElement;
if (elem2 != null)
{
kicString += "/" + elem2.LocalName;
break;
}
}
}
KeyInfoClause keyInfoClause = CryptoHelpers.CreateFromName <KeyInfoClause>(kicString);
// if we don't know what kind of KeyInfoClause we're looking at, use a generic KeyInfoNode:
if (keyInfoClause == null)
{
keyInfoClause = new KeyInfoNode();
}
// Ask the create clause to fill itself with the corresponding XML
keyInfoClause.LoadXml(elem);
// Add it to our list of KeyInfoClauses
AddClause(keyInfoClause);
}
child = child.NextSibling;
}
}
public override void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
this.m_uri = Utils.GetAttribute(value, "URI", "http://www.w3.org/2000/09/xmldsig#");
this.m_type = Utils.GetAttribute(value, "Type", "http://www.w3.org/2000/09/xmldsig#");
}
public override void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
_uri = Utils.GetAttribute(value, "URI", SignedXml.XmlDsigNamespaceUrl);
_type = Utils.GetAttribute(value, "Type", SignedXml.XmlDsigNamespaceUrl);
}
public override void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
XmlElement retrievalMethodElement = value;
m_uri = Utils.GetAttribute(value, "URI", SignedXml.XmlDsigNamespaceUrl);
m_type = Utils.GetAttribute(value, "Type", SignedXml.XmlDsigNamespaceUrl);
}
public void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
this.m_id = Utils.GetAttribute(value, "Id", "http://www.w3.org/2000/09/xmldsig#");
this.m_mimeType = Utils.GetAttribute(value, "MimeType", "http://www.w3.org/2000/09/xmldsig#");
this.m_encoding = Utils.GetAttribute(value, "Encoding", "http://www.w3.org/2000/09/xmldsig#");
foreach (XmlNode node in value.ChildNodes)
{
this.m_elData.Add(node);
}
this.m_cachedXml = value;
}
public void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
if (value.LocalName != "EncryptionProperty" || value.NamespaceURI != EncryptedXml.XmlEncNamespaceUrl)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidEncryptionProperty"));
}
// cache the Xml
_cachedXml = value;
_id = Utils.GetAttribute(value, "Id", EncryptedXml.XmlEncNamespaceUrl);
_target = Utils.GetAttribute(value, "Target", EncryptedXml.XmlEncNamespaceUrl);
_elemProp = value;
}
public override void LoadInnerXml(XmlNodeList nodeList)
{
if (nodeList != null)
{
foreach (XmlNode n in nodeList)
{
XmlElement e = n as XmlElement;
if (e != null && e.LocalName.Equals("InclusiveNamespaces") &&
e.NamespaceURI.Equals(SignedXml.XmlDsigExcC14NTransformUrl) &&
Utils.HasAttribute(e, "PrefixList", SignedXml.XmlDsigNamespaceUrl))
{
InclusiveNamespacesPrefixList = Utils.GetAttribute(e, "PrefixList", SignedXml.XmlDsigNamespaceUrl);
return;
}
}
}
}
public void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
m_id = Utils.GetAttribute(value, "Id", SignedXml.XmlDsigNamespaceUrl);
m_mimeType = Utils.GetAttribute(value, "MimeType", SignedXml.XmlDsigNamespaceUrl);
m_encoding = Utils.GetAttribute(value, "Encoding", SignedXml.XmlDsigNamespaceUrl);
foreach (XmlNode node in value.ChildNodes)
{
m_elData.Add(node);
}
// Save away the cached value
m_cachedXml = value;
}
public void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
XmlNamespaceManager nsmgr = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsmgr.AddNamespace("enc", "http://www.w3.org/2001/04/xmlenc#");
XmlElement element = value;
this.m_algorithm = Utils.GetAttribute(element, "Algorithm", "http://www.w3.org/2001/04/xmlenc#");
XmlNode node = value.SelectSingleNode("enc:KeySize", nsmgr);
if (node != null)
{
this.KeySize = Convert.ToInt32(Utils.DiscardWhiteSpaces(node.InnerText), (IFormatProvider)null);
}
this.m_cachedXml = value;
}
public override void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
this.ReferenceType = value.LocalName;
this.Uri = Utils.GetAttribute(value, "URI", EncryptedXml.XmlEncNamespaceUrl);
// Transforms
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("enc", EncryptedXml.XmlEncNamespaceUrl);
XmlNode transformsNode = value.SelectSingleNode("enc:Transforms", nsm);
if (transformsNode != null)
{
this.TransformChain.LoadXml(transformsNode as XmlElement);
}
// cache the Xml
m_cachedXml = value;
}
public virtual void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
ReferenceType = value.LocalName;
Uri = Utils.GetAttribute(value, "URI", EncryptedXml.XmlEncNamespaceUrl);
// Transforms
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl);
XmlNode transformsNode = value.SelectSingleNode("ds:Transforms", nsm);
if (transformsNode != null)
{
TransformChain.LoadXml(transformsNode as XmlElement);
}
// cache the Xml
_cachedXml = value;
}
public void LoadXml(XmlElement value)
{
// Make sure we don't get passed null
if (value == null)
{
throw new ArgumentNullException("value");
}
// Signature
XmlElement signatureElement = value;
if (!signatureElement.LocalName.Equals("Signature"))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "Signature");
}
// Attributes
m_id = Utils.GetAttribute(signatureElement, "Id", SignedXml.XmlDsigNamespaceUrl);
if (!Utils.VerifyAttributes(signatureElement, "Id"))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "Signature");
}
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl);
int expectedChildNodes = 0;
// SignedInfo
XmlNodeList signedInfoNodes = signatureElement.SelectNodes("ds:SignedInfo", nsm);
if (signedInfoNodes == null || signedInfoNodes.Count == 0 || (!Utils.GetAllowAdditionalSignatureNodes() && signedInfoNodes.Count > 1))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo");
}
XmlElement signedInfoElement = signedInfoNodes[0] as XmlElement;
expectedChildNodes += signedInfoNodes.Count;
this.SignedInfo = new SignedInfo();
this.SignedInfo.LoadXml(signedInfoElement);
// SignatureValue
XmlNodeList signatureValueNodes = signatureElement.SelectNodes("ds:SignatureValue", nsm);
if (signatureValueNodes == null || signatureValueNodes.Count == 0 || (!Utils.GetAllowAdditionalSignatureNodes() && signatureValueNodes.Count > 1))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignatureValue");
}
XmlElement signatureValueElement = signatureValueNodes[0] as XmlElement;
expectedChildNodes += signatureValueNodes.Count;
m_signatureValue = Convert.FromBase64String(Utils.DiscardWhiteSpaces(signatureValueElement.InnerText));
m_signatureValueId = Utils.GetAttribute(signatureValueElement, "Id", SignedXml.XmlDsigNamespaceUrl);
if (!Utils.VerifyAttributes(signatureValueElement, "Id"))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignatureValue");
}
// KeyInfo - optional single element
XmlNodeList keyInfoNodes = signatureElement.SelectNodes("ds:KeyInfo", nsm);
m_keyInfo = new KeyInfo();
if (keyInfoNodes != null)
{
if (!Utils.GetAllowAdditionalSignatureNodes() && keyInfoNodes.Count > 1)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "KeyInfo");
}
foreach (XmlNode node in keyInfoNodes)
{
XmlElement keyInfoElement = node as XmlElement;
if (keyInfoElement != null)
{
m_keyInfo.LoadXml(keyInfoElement);
}
}
expectedChildNodes += keyInfoNodes.Count;
}
// Object - zero or more elements allowed
XmlNodeList objectNodes = signatureElement.SelectNodes("ds:Object", nsm);
m_embeddedObjects.Clear();
if (objectNodes != null)
{
foreach (XmlNode node in objectNodes)
{
XmlElement objectElement = node as XmlElement;
if (objectElement != null)
{
DataObject dataObj = new DataObject();
dataObj.LoadXml(objectElement);
m_embeddedObjects.Add(dataObj);
}
}
expectedChildNodes += objectNodes.Count;
}
// Select all elements that have Id attributes
XmlNodeList nodeList = signatureElement.SelectNodes("//*[@Id]", nsm);
if (nodeList != null)
{
foreach (XmlNode node in nodeList)
{
m_referencedItems.Add(node);
}
}
// Verify that there aren't any extra nodes that aren't allowed
if (!Utils.GetAllowAdditionalSignatureNodes() && (signatureElement.SelectNodes("*").Count != expectedChildNodes))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "Signature");
}
}
// What we want to do is pump the input throug the TransformChain and then
// hash the output of the chain document is the document context for resolving relative references
internal byte[] CalculateHashValue(XmlDocument document, CanonicalXmlNodeList refList)
{
// refList is a list of elements that might be targets of references
// Now's the time to create our hashing algorithm
_hashAlgorithm = CryptoHelpers.CreateFromName <HashAlgorithm>(_digestMethod);
if (_hashAlgorithm == null)
{
throw new CryptographicException(SR.Cryptography_Xml_CreateHashAlgorithmFailed);
}
// Let's go get the target.
string baseUri = (document == null ? System.Environment.CurrentDirectory + "\\" : document.BaseURI);
Stream hashInputStream = null;
WebResponse response = null;
Stream inputStream = null;
XmlResolver resolver = null;
byte[] hashval = null;
try
{
switch (_refTargetType)
{
case ReferenceTargetType.Stream:
// This is the easiest case. We already have a stream, so just pump it through the TransformChain
resolver = (SignedXml.ResolverSet ? SignedXml._xmlResolver : new XmlSecureResolver(new XmlUrlResolver(), baseUri));
hashInputStream = TransformChain.TransformToOctetStream((Stream)_refTarget, resolver, baseUri);
break;
case ReferenceTargetType.UriReference:
// Second-easiest case -- dereference the URI & pump through the TransformChain
// handle the special cases where the URI is null (meaning whole doc)
// or the URI is just a fragment (meaning a reference to an embedded Object)
if (_uri == null)
{
// We need to create a DocumentNavigator out of the XmlElement
resolver = (SignedXml.ResolverSet ? SignedXml._xmlResolver : new XmlSecureResolver(new XmlUrlResolver(), baseUri));
// In the case of a Uri-less reference, we will simply pass null to the transform chain.
// The first transform in the chain is expected to know how to retrieve the data to hash.
hashInputStream = TransformChain.TransformToOctetStream((Stream)null, resolver, baseUri);
}
else if (_uri.Length == 0)
{
// This is the self-referential case. First, check that we have a document context.
// The Enveloped Signature does not discard comments as per spec; those will be omitted during the transform chain process
if (document == null)
{
throw new CryptographicException(SR.Format(SR.Cryptography_Xml_SelfReferenceRequiresContext, _uri));
}
// Normalize the containing document
resolver = (SignedXml.ResolverSet ? SignedXml._xmlResolver : new XmlSecureResolver(new XmlUrlResolver(), baseUri));
XmlDocument docWithNoComments = Utils.DiscardComments(Utils.PreProcessDocumentInput(document, resolver, baseUri));
hashInputStream = TransformChain.TransformToOctetStream(docWithNoComments, resolver, baseUri);
}
else if (_uri[0] == '#')
{
// If we get here, then we are constructing a Reference to an embedded DataObject
// referenced by an Id = attribute. Go find the relevant object
bool discardComments = true;
string idref = Utils.GetIdFromLocalUri(_uri, out discardComments);
if (idref == "xpointer(/)")
{
// This is a self referencial case
if (document == null)
{
throw new CryptographicException(SR.Format(SR.Cryptography_Xml_SelfReferenceRequiresContext, _uri));
}
// We should not discard comments here!!!
resolver = (SignedXml.ResolverSet ? SignedXml._xmlResolver : new XmlSecureResolver(new XmlUrlResolver(), baseUri));
hashInputStream = TransformChain.TransformToOctetStream(Utils.PreProcessDocumentInput(document, resolver, baseUri), resolver, baseUri);
break;
}
XmlElement elem = SignedXml.GetIdElement(document, idref);
if (elem != null)
{
_namespaces = Utils.GetPropagatedAttributes(elem.ParentNode as XmlElement);
}
if (elem == null)
{
// Go throw the referenced items passed in
if (refList != null)
{
foreach (XmlNode node in refList)
{
XmlElement tempElem = node as XmlElement;
if ((tempElem != null) && (Utils.HasAttribute(tempElem, "Id", SignedXml.XmlDsigNamespaceUrl)) &&
(Utils.GetAttribute(tempElem, "Id", SignedXml.XmlDsigNamespaceUrl).Equals(idref)))
{
elem = tempElem;
if (_signedXml._context != null)
{
_namespaces = Utils.GetPropagatedAttributes(_signedXml._context);
}
break;
}
}
}
}
if (elem == null)
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidReference);
}
XmlDocument normDocument = Utils.PreProcessElementInput(elem, resolver, baseUri);
// Add the propagated attributes
Utils.AddNamespaces(normDocument.DocumentElement, _namespaces);
resolver = (SignedXml.ResolverSet ? SignedXml._xmlResolver : new XmlSecureResolver(new XmlUrlResolver(), baseUri));
if (discardComments)
{
// We should discard comments before going into the transform chain
XmlDocument docWithNoComments = Utils.DiscardComments(normDocument);
hashInputStream = TransformChain.TransformToOctetStream(docWithNoComments, resolver, baseUri);
}
else
{
// This is an XPointer reference, do not discard comments!!!
hashInputStream = TransformChain.TransformToOctetStream(normDocument, resolver, baseUri);
}
}
else
{
throw new CryptographicException(SR.Cryptography_Xml_UriNotResolved, _uri);
}
break;
case ReferenceTargetType.XmlElement:
// We need to create a DocumentNavigator out of the XmlElement
resolver = (SignedXml.ResolverSet ? SignedXml._xmlResolver : new XmlSecureResolver(new XmlUrlResolver(), baseUri));
hashInputStream = TransformChain.TransformToOctetStream(Utils.PreProcessElementInput((XmlElement)_refTarget, resolver, baseUri), resolver, baseUri);
break;
default:
throw new CryptographicException(SR.Cryptography_Xml_UriNotResolved, _uri);
}
// Compute the new hash value
hashInputStream = SignedXmlDebugLog.LogReferenceData(this, hashInputStream);
hashval = _hashAlgorithm.ComputeHash(hashInputStream);
}
finally
{
if (hashInputStream != null)
{
hashInputStream.Close();
}
if (response != null)
{
response.Close();
}
if (inputStream != null)
{
inputStream.Close();
}
}
return(hashval);
}
public override void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("enc", EncryptedXml.XmlEncNamespaceUrl);
nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl);
this.Id = Utils.GetAttribute(value, "Id", EncryptedXml.XmlEncNamespaceUrl);
this.Type = Utils.GetAttribute(value, "Type", EncryptedXml.XmlEncNamespaceUrl);
this.MimeType = Utils.GetAttribute(value, "MimeType", EncryptedXml.XmlEncNamespaceUrl);
this.Encoding = Utils.GetAttribute(value, "Encoding", EncryptedXml.XmlEncNamespaceUrl);
XmlNode encryptionMethodNode = value.SelectSingleNode("enc:EncryptionMethod", nsm);
// EncryptionMethod
this.EncryptionMethod = new EncryptionMethod();
if (encryptionMethodNode != null)
{
this.EncryptionMethod.LoadXml(encryptionMethodNode as XmlElement);
}
// Key Info
this.KeyInfo = new KeyInfo();
XmlNode keyInfoNode = value.SelectSingleNode("ds:KeyInfo", nsm);
if (keyInfoNode != null)
{
this.KeyInfo.LoadXml(keyInfoNode as XmlElement);
}
// CipherData
XmlNode cipherDataNode = value.SelectSingleNode("enc:CipherData", nsm);
if (cipherDataNode == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_MissingCipherData"));
}
this.CipherData = new CipherData();
this.CipherData.LoadXml(cipherDataNode as XmlElement);
// EncryptionProperties
XmlNode encryptionPropertiesNode = value.SelectSingleNode("enc:EncryptionProperties", nsm);
if (encryptionPropertiesNode != null)
{
// Select the EncryptionProperty elements inside the EncryptionProperties element
XmlNodeList encryptionPropertyNodes = encryptionPropertiesNode.SelectNodes("enc:EncryptionProperty", nsm);
if (encryptionPropertyNodes != null)
{
foreach (XmlNode node in encryptionPropertyNodes)
{
EncryptionProperty ep = new EncryptionProperty();
ep.LoadXml(node as XmlElement);
this.EncryptionProperties.Add(ep);
}
}
}
// Save away the cached value
m_cachedXml = value;
}
public void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
// SignedInfo
XmlElement signedInfoElement = value;
if (!signedInfoElement.LocalName.Equals("SignedInfo"))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo");
}
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl);
int expectedChildNodes = 0;
// Id attribute -- optional
m_id = Utils.GetAttribute(signedInfoElement, "Id", SignedXml.XmlDsigNamespaceUrl);
if (!Utils.VerifyAttributes(signedInfoElement, "Id"))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo");
}
// CanonicalizationMethod -- must be present
XmlNodeList canonicalizationMethodNodes = signedInfoElement.SelectNodes("ds:CanonicalizationMethod", nsm);
if (canonicalizationMethodNodes == null || canonicalizationMethodNodes.Count == 0 || (!Utils.GetAllowAdditionalSignatureNodes() && canonicalizationMethodNodes.Count > 1))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo/CanonicalizationMethod");
}
XmlElement canonicalizationMethodElement = canonicalizationMethodNodes.Item(0) as XmlElement;
expectedChildNodes += canonicalizationMethodNodes.Count;
m_canonicalizationMethod = Utils.GetAttribute(canonicalizationMethodElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl);
if ((m_canonicalizationMethod == null && !Utils.GetSkipSignatureAttributeEnforcement()) || !Utils.VerifyAttributes(canonicalizationMethodElement, "Algorithm"))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo/CanonicalizationMethod");
}
m_canonicalizationMethodTransform = null;
if (canonicalizationMethodElement.ChildNodes.Count > 0)
{
this.CanonicalizationMethodObject.LoadInnerXml(canonicalizationMethodElement.ChildNodes);
}
// SignatureMethod -- must be present
XmlNodeList signatureMethodNodes = signedInfoElement.SelectNodes("ds:SignatureMethod", nsm);
if (signatureMethodNodes == null || signatureMethodNodes.Count == 0 || (!Utils.GetAllowAdditionalSignatureNodes() && signatureMethodNodes.Count > 1))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo/SignatureMethod");
}
XmlElement signatureMethodElement = signatureMethodNodes.Item(0) as XmlElement;
expectedChildNodes += signatureMethodNodes.Count;
m_signatureMethod = Utils.GetAttribute(signatureMethodElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl);
if ((m_signatureMethod == null && !Utils.GetSkipSignatureAttributeEnforcement()) || !Utils.VerifyAttributes(signatureMethodElement, "Algorithm"))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo/SignatureMethod");
}
// Now get the output length if we are using a MAC algorithm
XmlElement signatureLengthElement = signatureMethodElement.SelectSingleNode("ds:HMACOutputLength", nsm) as XmlElement;
if (signatureLengthElement != null)
{
m_signatureLength = signatureLengthElement.InnerXml;
}
// flush out any reference that was there
m_references.Clear();
// Reference - 0 or more
XmlNodeList referenceNodes = signedInfoElement.SelectNodes("ds:Reference", nsm);
if (referenceNodes != null)
{
if (referenceNodes.Count > Utils.GetMaxReferencesPerSignedInfo())
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo/Reference");
}
foreach (XmlNode node in referenceNodes)
{
XmlElement referenceElement = node as XmlElement;
Reference reference = new Reference();
AddReference(reference);
reference.LoadXml(referenceElement);
}
expectedChildNodes += referenceNodes.Count;
}
// Verify that there aren't any extra nodes that aren't allowed
if (!Utils.GetAllowAdditionalSignatureNodes() && (signedInfoElement.SelectNodes("*").Count != expectedChildNodes))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo");
}
// Save away the cached value
m_cachedXml = signedInfoElement;
}
public void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
_id = Utils.GetAttribute(value, "Id", SignedXml.XmlDsigNamespaceUrl);
_uri = Utils.GetAttribute(value, "URI", SignedXml.XmlDsigNamespaceUrl);
_type = Utils.GetAttribute(value, "Type", SignedXml.XmlDsigNamespaceUrl);
if (!Utils.VerifyAttributes(value, new string[] { "Id", "URI", "Type" }))
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference");
}
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl);
// Transforms
bool hasTransforms = false;
TransformChain = new TransformChain();
XmlNodeList transformsNodes = value.SelectNodes("ds:Transforms", nsm);
if (transformsNodes != null && transformsNodes.Count != 0)
{
if (transformsNodes.Count > 1)
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/Transforms");
}
hasTransforms = true;
XmlElement transformsElement = transformsNodes[0] as XmlElement;
if (!Utils.VerifyAttributes(transformsElement, (string[])null))
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/Transforms");
}
XmlNodeList transformNodes = transformsElement.SelectNodes("ds:Transform", nsm);
if (transformNodes != null)
{
if (transformNodes.Count != transformsElement.SelectNodes("*").Count)
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/Transforms");
}
if (transformNodes.Count > Utils.MaxTransformsPerReference)
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/Transforms");
}
foreach (XmlNode transformNode in transformNodes)
{
XmlElement transformElement = transformNode as XmlElement;
string algorithm = Utils.GetAttribute(transformElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl);
if (algorithm == null || !Utils.VerifyAttributes(transformElement, "Algorithm"))
{
throw new CryptographicException(SR.Cryptography_Xml_UnknownTransform);
}
Transform transform = CryptoHelpers.CreateFromName <Transform>(algorithm);
if (transform == null)
{
throw new CryptographicException(SR.Cryptography_Xml_UnknownTransform);
}
AddTransform(transform);
// let the transform read the children of the transformElement for data
transform.LoadInnerXml(transformElement.ChildNodes);
// Hack! this is done to get around the lack of here() function support in XPath
if (transform is XmlDsigEnvelopedSignatureTransform)
{
// Walk back to the Signature tag. Find the nearest signature ancestor
// Signature-->SignedInfo-->Reference-->Transforms-->Transform
XmlNode signatureTag = transformElement.SelectSingleNode("ancestor::ds:Signature[1]", nsm);
XmlNodeList signatureList = transformElement.SelectNodes("//ds:Signature", nsm);
if (signatureList != null)
{
int position = 0;
foreach (XmlNode node in signatureList)
{
position++;
if (node == signatureTag)
{
((XmlDsigEnvelopedSignatureTransform)transform).SignaturePosition = position;
break;
}
}
}
}
}
}
}
// DigestMethod
XmlNodeList digestMethodNodes = value.SelectNodes("ds:DigestMethod", nsm);
if (digestMethodNodes == null || digestMethodNodes.Count == 0 || digestMethodNodes.Count > 1)
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/DigestMethod");
}
XmlElement digestMethodElement = digestMethodNodes[0] as XmlElement;
_digestMethod = Utils.GetAttribute(digestMethodElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl);
if (_digestMethod == null || !Utils.VerifyAttributes(digestMethodElement, "Algorithm"))
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/DigestMethod");
}
// DigestValue
XmlNodeList digestValueNodes = value.SelectNodes("ds:DigestValue", nsm);
if (digestValueNodes == null || digestValueNodes.Count == 0 || digestValueNodes.Count > 1)
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/DigestValue");
}
XmlElement digestValueElement = digestValueNodes[0] as XmlElement;
_digestValue = Convert.FromBase64String(Utils.DiscardWhiteSpaces(digestValueElement.InnerText));
if (!Utils.VerifyAttributes(digestValueElement, (string[])null))
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference/DigestValue");
}
// Verify that there aren't any extra nodes that aren't allowed
int expectedChildNodeCount = hasTransforms ? 3 : 2;
if (value.SelectNodes("*").Count != expectedChildNodeCount)
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "Reference");
}
// cache the Xml
_cachedXml = value;
}
public void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
// SignedInfo
XmlElement signedInfoElement = value;
if (!signedInfoElement.LocalName.Equals("SignedInfo"))
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "SignedInfo");
}
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl);
// Id attribute -- optional
_id = Utils.GetAttribute(signedInfoElement, "Id", SignedXml.XmlDsigNamespaceUrl);
// CanonicalizationMethod -- must be present
XmlElement canonicalizationMethodElement = signedInfoElement.SelectSingleNode("ds:CanonicalizationMethod", nsm) as XmlElement;
if (canonicalizationMethodElement == null)
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "SignedInfo/CanonicalizationMethod");
}
_canonicalizationMethod = Utils.GetAttribute(canonicalizationMethodElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl);
_canonicalizationMethodTransform = null;
if (canonicalizationMethodElement.ChildNodes.Count > 0)
{
CanonicalizationMethodObject.LoadInnerXml(canonicalizationMethodElement.ChildNodes);
}
// SignatureMethod -- must be present
XmlElement signatureMethodElement = signedInfoElement.SelectSingleNode("ds:SignatureMethod", nsm) as XmlElement;
if (signatureMethodElement == null)
{
throw new CryptographicException(SR.Cryptography_Xml_InvalidElement, "SignedInfo/SignatureMethod");
}
_signatureMethod = Utils.GetAttribute(signatureMethodElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl);
// Now get the output length if we are using a MAC algorithm
XmlElement signatureLengthElement = signatureMethodElement.SelectSingleNode("ds:HMACOutputLength", nsm) as XmlElement;
if (signatureLengthElement != null)
{
_signatureLength = signatureLengthElement.InnerXml;
}
// flush out any reference that was there
_references.Clear();
XmlNodeList referenceNodes = signedInfoElement.SelectNodes("ds:Reference", nsm);
if (referenceNodes != null)
{
foreach (XmlNode node in referenceNodes)
{
XmlElement referenceElement = node as XmlElement;
Reference reference = new Reference();
AddReference(reference);
reference.LoadXml(referenceElement);
}
}
// Save away the cached value
_cachedXml = signedInfoElement;
}
// What we want to do is pump the input throug the TransformChain and then
// hash the output of the chain document is the document context for resolving relative references
internal void UpdateHashValue(XmlDocument document, CanonicalXmlNodeList refList)
{
// refList is a list of elements that might be targets of references
// Now's the time to create our hashing algorithm
_hashAlgorithm = SHA1.Create();
// Let's go get the target.
string baseUri = document.BaseURI;
Stream hashInputStream = null;
byte[] hashval = null;
try
{
// Second-easiest case -- dereference the URI & pump through the TransformChain
// handle the special cases where the URI is null (meaning whole doc)
// or the URI is just a fragment (meaning a reference to an embedded Object)
if (_uri[0] == '#')
{
// If we get here, then we are constructing a Reference to an embedded DataObject
// referenced by an Id = attribute. Go find the relevant object
bool discardComments = true;
string idref = Utils.GetIdFromLocalUri(_uri, out discardComments);
XmlElement elem = document.GetElementsByTagName(tag)[0] as XmlElement;
if (elem != null)
{
_namespaces = Utils.GetPropagatedAttributes(elem.ParentNode as XmlElement);
}
if (elem == null)
{
// Go throw the referenced items passed in
if (refList != null)
{
foreach (XmlNode node in refList)
{
XmlElement tempElem = node as XmlElement;
if ((tempElem != null) && (Utils.HasAttribute(tempElem, "Id", SignedXml.XmlDsigNamespaceUrl)) &&
(Utils.GetAttribute(tempElem, "Id", SignedXml.XmlDsigNamespaceUrl).Equals(idref)))
{
elem = tempElem;
if (_signedXml._context != null)
{
_namespaces = Utils.GetPropagatedAttributes(_signedXml._context);
}
break;
}
}
}
}
XmlDocument normDocument = Utils.PreProcessElementInput(elem);
// Add the propagated attributes
Utils.AddNamespaces(normDocument.DocumentElement, _namespaces);
if (discardComments)
{
// We should discard comments before going into the transform chain
hashInputStream = TransformChain.TransformToOctetStream(normDocument);
}
else
{
// This is an XPointer reference, do not discard comments!!!
hashInputStream = TransformChain.TransformToOctetStream(normDocument);
}
}
// Compute the new hash value
hashval = _hashAlgorithm.ComputeHash(hashInputStream);
}
finally
{
if (hashInputStream != null)
{
hashInputStream.Dispose();
}
}
DigestValue = hashval;
}
public void LoadXml(XmlElement value)
{
// Make sure we don't get passed null
if (value == null)
{
throw new ArgumentNullException("value");
}
// Signature
XmlElement signatureElement = value;
if (!signatureElement.LocalName.Equals("Signature"))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "Signature");
}
// Id attribute -- optional
m_id = Utils.GetAttribute(signatureElement, "Id", SignedXml.XmlDsigNamespaceUrl);
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl);
// SignedInfo
XmlElement signedInfoElement = signatureElement.SelectSingleNode("ds:SignedInfo", nsm) as XmlElement;
if (signedInfoElement == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo");
}
this.SignedInfo = new SignedInfo();
this.SignedInfo.LoadXml(signedInfoElement);
// SignatureValue
XmlElement signatureValueElement = signatureElement.SelectSingleNode("ds:SignatureValue", nsm) as XmlElement;
if (signatureValueElement == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "SignedInfo/SignatureValue");
}
m_signatureValue = Convert.FromBase64String(Utils.DiscardWhiteSpaces(signatureValueElement.InnerText));
m_signatureValueId = Utils.GetAttribute(signatureValueElement, "Id", SignedXml.XmlDsigNamespaceUrl);
XmlNodeList keyInfoNodes = signatureElement.SelectNodes("ds:KeyInfo", nsm);
m_keyInfo = new KeyInfo();
if (keyInfoNodes != null)
{
foreach (XmlNode node in keyInfoNodes)
{
XmlElement keyInfoElement = node as XmlElement;
if (keyInfoElement != null)
{
m_keyInfo.LoadXml(keyInfoElement);
}
}
}
XmlNodeList objectNodes = signatureElement.SelectNodes("ds:Object", nsm);
m_embeddedObjects.Clear();
if (objectNodes != null)
{
foreach (XmlNode node in objectNodes)
{
XmlElement objectElement = node as XmlElement;
if (objectElement != null)
{
DataObject dataObj = new DataObject();
dataObj.LoadXml(objectElement);
m_embeddedObjects.Add(dataObj);
}
}
}
// Select all elements that have Id attributes
XmlNodeList nodeList = signatureElement.SelectNodes("//*[@Id]", nsm);
if (nodeList != null)
{
foreach (XmlNode node in nodeList)
{
m_referencedItems.Add(node);
}
}
}
public void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
m_id = Utils.GetAttribute(value, "Id", SignedXml.XmlDsigNamespaceUrl);
m_uri = Utils.GetAttribute(value, "URI", SignedXml.XmlDsigNamespaceUrl);
m_type = Utils.GetAttribute(value, "Type", SignedXml.XmlDsigNamespaceUrl);
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl);
// Transforms
this.TransformChain = new TransformChain();
XmlElement transformsElement = value.SelectSingleNode("ds:Transforms", nsm) as XmlElement;
if (transformsElement != null)
{
XmlNodeList transformNodes = transformsElement.SelectNodes("ds:Transform", nsm);
if (transformNodes != null)
{
foreach (XmlNode transformNode in transformNodes)
{
XmlElement transformElement = transformNode as XmlElement;
string algorithm = Utils.GetAttribute(transformElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl);
Transform transform = CryptoConfig.CreateFromName(algorithm) as Transform;
if (transform == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_UnknownTransform"));
}
AddTransform(transform);
// let the transform read the children of the transformElement for data
transform.LoadInnerXml(transformElement.ChildNodes);
// Hack! this is done to get around the lack of here() function support in XPath
if (transform is XmlDsigEnvelopedSignatureTransform)
{
// Walk back to the Signature tag. Find the nearest signature ancestor
// Signature-->SignedInfo-->Reference-->Transforms-->Transform
XmlNode signatureTag = transformElement.SelectSingleNode("ancestor::ds:Signature[1]", nsm);
XmlNodeList signatureList = transformElement.SelectNodes("//ds:Signature", nsm);
if (signatureList != null)
{
int position = 0;
foreach (XmlNode node in signatureList)
{
position++;
if (node == signatureTag)
{
((XmlDsigEnvelopedSignatureTransform)transform).SignaturePosition = position;
break;
}
}
}
}
}
}
}
// DigestMethod
XmlElement digestMethodElement = value.SelectSingleNode("ds:DigestMethod", nsm) as XmlElement;
if (digestMethodElement == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "Reference/DigestMethod");
}
m_digestMethod = Utils.GetAttribute(digestMethodElement, "Algorithm", SignedXml.XmlDsigNamespaceUrl);
// DigestValue
XmlElement digestValueElement = value.SelectSingleNode("ds:DigestValue", nsm) as XmlElement;
if (digestValueElement == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_InvalidElement"), "Reference/DigestValue");
}
m_digestValue = Convert.FromBase64String(Utils.DiscardWhiteSpaces(digestValueElement.InnerText));
// cache the Xml
m_cachedXml = value;
}
public override void LoadXml(XmlElement value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
XmlNamespaceManager nsm = new XmlNamespaceManager(value.OwnerDocument.NameTable);
nsm.AddNamespace("enc", EncryptedXml.XmlEncNamespaceUrl);
nsm.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl);
Id = Utils.GetAttribute(value, "Id", EncryptedXml.XmlEncNamespaceUrl);
Type = Utils.GetAttribute(value, "Type", EncryptedXml.XmlEncNamespaceUrl);
MimeType = Utils.GetAttribute(value, "MimeType", EncryptedXml.XmlEncNamespaceUrl);
Encoding = Utils.GetAttribute(value, "Encoding", EncryptedXml.XmlEncNamespaceUrl);
Recipient = Utils.GetAttribute(value, "Recipient", EncryptedXml.XmlEncNamespaceUrl);
XmlNode encryptionMethodNode = value.SelectSingleNode("enc:EncryptionMethod", nsm);
// EncryptionMethod
EncryptionMethod = new EncryptionMethod();
if (encryptionMethodNode != null)
{
EncryptionMethod.LoadXml(encryptionMethodNode as XmlElement);
}
// Key Info
KeyInfo = new KeyInfo();
XmlNode keyInfoNode = value.SelectSingleNode("ds:KeyInfo", nsm);
if (keyInfoNode != null)
{
KeyInfo.LoadXml(keyInfoNode as XmlElement);
}
// CipherData
XmlNode cipherDataNode = value.SelectSingleNode("enc:CipherData", nsm);
if (cipherDataNode == null)
{
throw new CryptographicException(SR.Cryptography_Xml_MissingCipherData);
}
CipherData = new CipherData();
CipherData.LoadXml(cipherDataNode as XmlElement);
// EncryptionProperties
XmlNode encryptionPropertiesNode = value.SelectSingleNode("enc:EncryptionProperties", nsm);
if (encryptionPropertiesNode != null)
{
// Select the EncryptionProperty elements inside the EncryptionProperties element
XmlNodeList encryptionPropertyNodes = encryptionPropertiesNode.SelectNodes("enc:EncryptionProperty", nsm);
if (encryptionPropertyNodes != null)
{
foreach (XmlNode node in encryptionPropertyNodes)
{
EncryptionProperty ep = new EncryptionProperty();
ep.LoadXml(node as XmlElement);
EncryptionProperties.Add(ep);
}
}
}
// CarriedKeyName
XmlNode carriedKeyNameNode = value.SelectSingleNode("enc:CarriedKeyName", nsm);
if (carriedKeyNameNode != null)
{
CarriedKeyName = carriedKeyNameNode.InnerText;
}
// ReferenceList
XmlNode referenceListNode = value.SelectSingleNode("enc:ReferenceList", nsm);
if (referenceListNode != null)
{
// Select the DataReference elements inside the ReferenceList element
XmlNodeList dataReferenceNodes = referenceListNode.SelectNodes("enc:DataReference", nsm);
if (dataReferenceNodes != null)
{
foreach (XmlNode node in dataReferenceNodes)
{
DataReference dr = new DataReference();
dr.LoadXml(node as XmlElement);
ReferenceList.Add(dr);
}
}
// Select the KeyReference elements inside the ReferenceList element
XmlNodeList keyReferenceNodes = referenceListNode.SelectNodes("enc:KeyReference", nsm);
if (keyReferenceNodes != null)
{
foreach (XmlNode node in keyReferenceNodes)
{
KeyReference kr = new KeyReference();
kr.LoadXml(node as XmlElement);
ReferenceList.Add(kr);
}
}
}
// Save away the cached value
_cachedXml = value;
}
