protected EncryptedType ()
{
cipherData = new CipherData ();
encoding = null;
encryptionMethod = null;
encryptionProperties = new EncryptionPropertyCollection ();
id = null;
keyInfo = new KeyInfo ();
mimeType = null;
type = null;
}
//
// private methods
//
private byte[] GetCipherValue (CipherData cipherData) {
if (cipherData == null)
throw new ArgumentNullException("cipherData");
WebResponse response = null;
Stream inputStream = null;
if (cipherData.CipherValue != null) {
return cipherData.CipherValue;
} else if (cipherData.CipherReference != null) {
if (cipherData.CipherReference.CipherValue != null)
return cipherData.CipherReference.CipherValue;
Stream decInputStream = null;
// See if the CipherReference is a local URI
if (cipherData.CipherReference.Uri.Length == 0) {
// self referenced Uri
string baseUri = (m_document == null ? null : m_document.BaseURI);
TransformChain tc = cipherData.CipherReference.TransformChain;
decInputStream = tc.TransformToOctetStream(m_document, m_xmlResolver, baseUri);
} else if (cipherData.CipherReference.Uri[0] == '#') {
string idref = Utils.ExtractIdFromLocalUri(cipherData.CipherReference.Uri);
// Serialize
inputStream = new MemoryStream(m_encoding.GetBytes(GetIdElement(m_document, idref).OuterXml));
string baseUri = (m_document == null ? null : m_document.BaseURI);
TransformChain tc = cipherData.CipherReference.TransformChain;
decInputStream = tc.TransformToOctetStream(inputStream, m_xmlResolver, baseUri);
} else {
DownloadCipherValue(cipherData, out inputStream, out decInputStream, out response);
}
// read the output stream into a memory stream
byte[] cipherValue = null;
using (MemoryStream ms = new MemoryStream()) {
Utils.Pump(decInputStream, ms);
cipherValue = ms.ToArray();
// Close the stream and return
if (response != null)
response.Close();
if (inputStream != null)
inputStream.Close();
decInputStream.Close();
}
// cache the cipher value for Perf reasons in case we call this routine twice
cipherData.CipherReference.CipherValue = cipherValue;
return cipherValue;
}
// Throw a CryptographicException if we were unable to retrieve the cipher data.
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_MissingCipherData"));
}
private byte[] GetCipherValue(CipherData cipherData)
{
return (byte[])GetCipherValueMethod.Invoke(this, new object[] { cipherData });
}
protected EncryptedType ()
{
cipherData = new CipherData ();
encryptionProperties = new EncryptionPropertyCollection ();
keyInfo = new KeyInfo ();
}
private void DecryptEncryptedGrants(XmlNodeList encryptedGrantList, IRelDecryptor decryptor) {
XmlElement encryptionMethod = null;
XmlElement keyInfo = null;
XmlElement cipherData = null;
EncryptionMethod encryptionMethodObj = null;
KeyInfo keyInfoObj = null;
CipherData cipherDataObj = null;
for (int i = 0, count = encryptedGrantList.Count; i < count; i++) {
encryptionMethod = encryptedGrantList[i].SelectSingleNode("//r:encryptedGrant/enc:EncryptionMethod", namespaceManager) as XmlElement;
keyInfo = encryptedGrantList[i].SelectSingleNode("//r:encryptedGrant/dsig:KeyInfo", namespaceManager) as XmlElement;
cipherData = encryptedGrantList[i].SelectSingleNode("//r:encryptedGrant/enc:CipherData", namespaceManager) as XmlElement;
if ((encryptionMethod != null) &&
(keyInfo != null) &&
(cipherData != null)) {
encryptionMethodObj = new EncryptionMethod();
keyInfoObj = new KeyInfo();
cipherDataObj = new CipherData();
encryptionMethodObj.LoadXml(encryptionMethod);
keyInfoObj.LoadXml(keyInfo);
cipherDataObj.LoadXml(cipherData);
MemoryStream toDecrypt = null;
Stream decryptedContent = null;
StreamReader streamReader = null;
try {
toDecrypt = new MemoryStream(cipherDataObj.CipherValue);
decryptedContent = relDecryptor.Decrypt(encryptionMethodObj,
keyInfoObj, toDecrypt);
if ((decryptedContent == null) || (decryptedContent.Length == 0))
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_XrmlUnableToDecryptGrant"));
streamReader = new StreamReader(decryptedContent);
string clearContent = streamReader.ReadToEnd();
encryptedGrantList[i].ParentNode.InnerXml = clearContent;
}
finally {
if (toDecrypt != null)
toDecrypt.Close();
if (decryptedContent != null)
decryptedContent.Close();
if (streamReader != null)
streamReader.Close();
}
encryptionMethodObj = null;
keyInfoObj = null;
cipherDataObj = null;
}
encryptionMethod = null;
keyInfo = null;
cipherData = null;
}
}
public override void LoadXml (XmlElement value)
{
if (value == null)
throw new ArgumentNullException ("value");
if ((value.LocalName != XmlEncryption.ElementNames.EncryptedData) || (value.NamespaceURI != EncryptedXml.XmlEncNamespaceUrl))
throw new CryptographicException ("Malformed EncryptedData element.");
else {
EncryptionMethod = null;
EncryptionMethod = null;
EncryptionProperties.Clear ();
Id = null;
Type = null;
MimeType = null;
Encoding = null;
foreach (XmlNode n in value.ChildNodes) {
if (n is XmlWhitespace)
continue;
switch (n.LocalName) {
case XmlEncryption.ElementNames.EncryptionMethod:
EncryptionMethod = new EncryptionMethod ();
EncryptionMethod.LoadXml ((XmlElement) n);
break;
case XmlSignature.ElementNames.KeyInfo:
KeyInfo = new KeyInfo ();
KeyInfo.LoadXml ((XmlElement) n);
break;
case XmlEncryption.ElementNames.CipherData:
CipherData = new CipherData ();
CipherData.LoadXml ((XmlElement) n);
break;
case XmlEncryption.ElementNames.EncryptionProperties:
foreach (XmlElement element in ((XmlElement) n).GetElementsByTagName (XmlEncryption.ElementNames.EncryptionProperty, EncryptedXml.XmlEncNamespaceUrl))
EncryptionProperties.Add (new EncryptionProperty (element));
break;
}
}
if (value.HasAttribute (XmlEncryption.AttributeNames.Id))
Id = value.Attributes [XmlEncryption.AttributeNames.Id].Value;
if (value.HasAttribute (XmlEncryption.AttributeNames.Type))
Type = value.Attributes [XmlEncryption.AttributeNames.Type].Value;
if (value.HasAttribute (XmlEncryption.AttributeNames.MimeType))
MimeType = value.Attributes [XmlEncryption.AttributeNames.MimeType].Value;
if (value.HasAttribute (XmlEncryption.AttributeNames.Encoding))
Encoding = value.Attributes [XmlEncryption.AttributeNames.Encoding].Value;
}
}
private byte[] GetCipherValue(CipherData cipherData)
{
if (cipherData == null)
{
throw new ArgumentNullException("cipherData");
}
WebResponse response = null;
Stream input = null;
if (cipherData.CipherValue != null)
{
return cipherData.CipherValue;
}
if (cipherData.CipherReference == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_MissingCipherData"));
}
if (cipherData.CipherReference.CipherValue != null)
{
return cipherData.CipherReference.CipherValue;
}
Stream decInputStream = null;
if (cipherData.CipherReference.Uri.Length == 0)
{
string baseUri = (this.m_document == null) ? null : this.m_document.BaseURI;
decInputStream = cipherData.CipherReference.TransformChain.TransformToOctetStream(this.m_document, this.m_xmlResolver, baseUri);
}
else if (cipherData.CipherReference.Uri[0] == '#')
{
string idValue = System.Security.Cryptography.Xml.Utils.ExtractIdFromLocalUri(cipherData.CipherReference.Uri);
input = new MemoryStream(this.m_encoding.GetBytes(this.GetIdElement(this.m_document, idValue).OuterXml));
string str3 = (this.m_document == null) ? null : this.m_document.BaseURI;
decInputStream = cipherData.CipherReference.TransformChain.TransformToOctetStream(input, this.m_xmlResolver, str3);
}
else
{
this.DownloadCipherValue(cipherData, out input, out decInputStream, out response);
}
byte[] buffer = null;
using (MemoryStream stream3 = new MemoryStream())
{
System.Security.Cryptography.Xml.Utils.Pump(decInputStream, stream3);
buffer = stream3.ToArray();
if (response != null)
{
response.Close();
}
if (input != null)
{
input.Close();
}
decInputStream.Close();
}
cipherData.CipherReference.CipherValue = buffer;
return buffer;
}
private void DecryptEncryptedGrants(XmlNodeList encryptedGrantList, IRelDecryptor decryptor)
{
XmlElement encryptionMethod = null;
XmlElement keyInfo = null;
XmlElement cipherData = null;
EncryptionMethod encryptionMethodObj = null;
KeyInfo keyInfoObj = null;
CipherData cipherDataObj = null;
for (int i = 0, count = encryptedGrantList.Count; i < count; i++)
{
encryptionMethod = encryptedGrantList[i].SelectSingleNode("//r:encryptedGrant/enc:EncryptionMethod", _namespaceManager) as XmlElement;
keyInfo = encryptedGrantList[i].SelectSingleNode("//r:encryptedGrant/dsig:KeyInfo", _namespaceManager) as XmlElement;
cipherData = encryptedGrantList[i].SelectSingleNode("//r:encryptedGrant/enc:CipherData", _namespaceManager) as XmlElement;
if ((encryptionMethod != null) &&
(keyInfo != null) &&
(cipherData != null))
{
encryptionMethodObj = new EncryptionMethod();
keyInfoObj = new KeyInfo();
cipherDataObj = new CipherData();
encryptionMethodObj.LoadXml(encryptionMethod);
keyInfoObj.LoadXml(keyInfo);
cipherDataObj.LoadXml(cipherData);
MemoryStream toDecrypt = null;
Stream decryptedContent = null;
StreamReader streamReader = null;
try
{
toDecrypt = new MemoryStream(cipherDataObj.CipherValue);
decryptedContent = _relDecryptor.Decrypt(encryptionMethodObj,
keyInfoObj, toDecrypt);
if ((decryptedContent == null) || (decryptedContent.Length == 0))
{
throw new CryptographicException(SR.Cryptography_Xml_XrmlUnableToDecryptGrant);
}
streamReader = new StreamReader(decryptedContent);
string clearContent = streamReader.ReadToEnd();
encryptedGrantList[i].ParentNode.InnerXml = clearContent;
}
finally
{
if (toDecrypt != null)
{
toDecrypt.Close();
}
if (decryptedContent != null)
{
decryptedContent.Close();
}
if (streamReader != null)
{
streamReader.Close();
}
}
encryptionMethodObj = null;
keyInfoObj = null;
cipherDataObj = null;
}
encryptionMethod = null;
keyInfo = null;
cipherData = null;
}
}
//
// private methods
//
private byte[] GetCipherValue(CipherData cipherData)
{
if (cipherData == null)
{
throw new ArgumentNullException(nameof(cipherData));
}
Stream inputStream = null;
if (cipherData.CipherValue != null)
{
return(cipherData.CipherValue);
}
else if (cipherData.CipherReference != null)
{
if (cipherData.CipherReference.CipherValue != null)
{
return(cipherData.CipherReference.CipherValue);
}
Stream decInputStream = null;
if (cipherData.CipherReference.Uri == null)
{
throw new CryptographicException(SR.Cryptography_Xml_UriNotSupported);
}
// See if the CipherReference is a local URI
if (cipherData.CipherReference.Uri.Length == 0)
{
// self referenced Uri
string baseUri = (_document == null ? null : _document.BaseURI);
TransformChain tc = cipherData.CipherReference.TransformChain;
if (tc == null)
{
throw new CryptographicException(SR.Cryptography_Xml_UriNotSupported);
}
decInputStream = tc.TransformToOctetStream(_document, _xmlResolver, baseUri);
}
else if (cipherData.CipherReference.Uri[0] == '#')
{
string idref = Utils.ExtractIdFromLocalUri(cipherData.CipherReference.Uri);
// Serialize
XmlElement idElem = GetIdElement(_document, idref);
if (idElem == null || idElem.OuterXml == null)
{
throw new CryptographicException(SR.Cryptography_Xml_UriNotSupported);
}
inputStream = new MemoryStream(_encoding.GetBytes(idElem.OuterXml));
string baseUri = (_document == null ? null : _document.BaseURI);
TransformChain tc = cipherData.CipherReference.TransformChain;
if (tc == null)
{
throw new CryptographicException(SR.Cryptography_Xml_UriNotSupported);
}
decInputStream = tc.TransformToOctetStream(inputStream, _xmlResolver, baseUri);
}
else
{
throw new CryptographicException(SR.Cryptography_Xml_UriNotResolved, cipherData.CipherReference.Uri);
}
// read the output stream into a memory stream
byte[] cipherValue = null;
using (MemoryStream ms = new MemoryStream())
{
Utils.Pump(decInputStream, ms);
cipherValue = ms.ToArray();
// Close the stream and return
if (inputStream != null)
{
inputStream.Close();
}
decInputStream.Close();
}
// cache the cipher value for Perf reasons in case we call this routine twice
cipherData.CipherReference.CipherValue = cipherValue;
return(cipherValue);
}
// Throw a CryptographicException if we were unable to retrieve the cipher data.
throw new CryptographicException(SR.Cryptography_Xml_MissingCipherData);
}
private void DownloadCipherValue(CipherData cipherData, out Stream inputStream, out Stream decInputStream, out WebResponse response)
{
SecurityManager.GetStandardSandbox(this.m_evidence).PermitOnly();
WebRequest request = WebRequest.Create(cipherData.CipherReference.Uri);
if (request == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_UriNotResolved"), cipherData.CipherReference.Uri);
}
response = request.GetResponse();
if (response == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_UriNotResolved"), cipherData.CipherReference.Uri);
}
inputStream = response.GetResponseStream();
if (inputStream == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_UriNotResolved"), cipherData.CipherReference.Uri);
}
decInputStream = cipherData.CipherReference.TransformChain.TransformToOctetStream(inputStream, this.m_xmlResolver, cipherData.CipherReference.Uri);
}
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);
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(SecurityResources.GetResourceString("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;
}
internal XmlElement GetXml(XmlDocument document)
{
// Create the EncryptedKey element
XmlElement encryptedKeyElement = (XmlElement)document.CreateElement("EncryptedKey", EncryptedXml.XmlEncNamespaceUrl);
// Deal with attributes
if (!string.IsNullOrEmpty(Id))
{
encryptedKeyElement.SetAttribute("Id", Id);
}
if (!string.IsNullOrEmpty(Type))
{
encryptedKeyElement.SetAttribute("Type", Type);
}
if (!string.IsNullOrEmpty(MimeType))
{
encryptedKeyElement.SetAttribute("MimeType", MimeType);
}
if (!string.IsNullOrEmpty(Encoding))
{
encryptedKeyElement.SetAttribute("Encoding", Encoding);
}
if (!string.IsNullOrEmpty(Recipient))
{
encryptedKeyElement.SetAttribute("Recipient", Recipient);
}
// EncryptionMethod
if (EncryptionMethod != null)
{
encryptedKeyElement.AppendChild(EncryptionMethod.GetXml(document));
}
// KeyInfo
if (KeyInfo.Count > 0)
{
encryptedKeyElement.AppendChild(KeyInfo.GetXml(document));
}
// CipherData
if (CipherData == null)
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_MissingCipherData"));
}
encryptedKeyElement.AppendChild(CipherData.GetXml(document));
// EncryptionProperties
if (EncryptionProperties.Count > 0)
{
XmlElement encryptionPropertiesElement = document.CreateElement("EncryptionProperties", EncryptedXml.XmlEncNamespaceUrl);
for (int index = 0; index < EncryptionProperties.Count; index++)
{
EncryptionProperty ep = EncryptionProperties.Item(index);
encryptionPropertiesElement.AppendChild(ep.GetXml(document));
}
encryptedKeyElement.AppendChild(encryptionPropertiesElement);
}
// ReferenceList
if (ReferenceList.Count > 0)
{
XmlElement referenceListElement = document.CreateElement("ReferenceList", EncryptedXml.XmlEncNamespaceUrl);
for (int index = 0; index < ReferenceList.Count; index++)
{
referenceListElement.AppendChild(ReferenceList[index].GetXml(document));
}
encryptedKeyElement.AppendChild(referenceListElement);
}
// CarriedKeyName
if (CarriedKeyName != null)
{
XmlElement carriedKeyNameElement = (XmlElement)document.CreateElement("CarriedKeyName", EncryptedXml.XmlEncNamespaceUrl);
XmlText carriedKeyNameText = document.CreateTextNode(CarriedKeyName);
carriedKeyNameElement.AppendChild(carriedKeyNameText);
encryptedKeyElement.AppendChild(carriedKeyNameElement);
}
return(encryptedKeyElement);
}
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);
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);
}
}
}
// Save away the cached value
_cachedXml = value;
}
private void DownloadCipherValue (CipherData cipherData, out Stream inputStream, out Stream decInputStream, out WebResponse response) {
// maybe a network stream, make sure we allow just what is needed!!
PermissionSet ps = SecurityManager.GetStandardSandbox(m_evidence);
ps.PermitOnly();
WebRequest request = WebRequest.Create(cipherData.CipherReference.Uri);
if (request == null)
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_UriNotResolved"), cipherData.CipherReference.Uri);
response = request.GetResponse();
if (response == null)
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_UriNotResolved"), cipherData.CipherReference.Uri);
inputStream = response.GetResponseStream();
if (inputStream == null)
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_UriNotResolved"), cipherData.CipherReference.Uri);
TransformChain tc = cipherData.CipherReference.TransformChain;
decInputStream = tc.TransformToOctetStream(inputStream, m_xmlResolver, cipherData.CipherReference.Uri);
}
private void DecryptEncryptedGrants(XmlNodeList encryptedGrantList, IRelDecryptor decryptor)
{
XmlElement element = null;
XmlElement element2 = null;
XmlElement element3 = null;
EncryptionMethod encryptionMethod = null;
KeyInfo keyInfo = null;
CipherData data = null;
int num = 0;
int count = encryptedGrantList.Count;
while (num < count)
{
element = encryptedGrantList[num].SelectSingleNode("//r:encryptedGrant/enc:EncryptionMethod", this.namespaceManager) as XmlElement;
element2 = encryptedGrantList[num].SelectSingleNode("//r:encryptedGrant/dsig:KeyInfo", this.namespaceManager) as XmlElement;
element3 = encryptedGrantList[num].SelectSingleNode("//r:encryptedGrant/enc:CipherData", this.namespaceManager) as XmlElement;
if (((element != null) && (element2 != null)) && (element3 != null))
{
encryptionMethod = new EncryptionMethod();
keyInfo = new KeyInfo();
data = new CipherData();
encryptionMethod.LoadXml(element);
keyInfo.LoadXml(element2);
data.LoadXml(element3);
MemoryStream toDecrypt = null;
Stream stream = null;
StreamReader reader = null;
try
{
toDecrypt = new MemoryStream(data.CipherValue);
stream = this.relDecryptor.Decrypt(encryptionMethod, keyInfo, toDecrypt);
if ((stream == null) || (stream.Length == 0L))
{
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Xml_XrmlUnableToDecryptGrant"));
}
reader = new StreamReader(stream);
string str = reader.ReadToEnd();
encryptedGrantList[num].ParentNode.InnerXml = str;
}
finally
{
if (toDecrypt != null)
{
toDecrypt.Close();
}
if (stream != null)
{
stream.Close();
}
if (reader != null)
{
reader.Close();
}
}
encryptionMethod = null;
keyInfo = null;
data = null;
}
element = null;
element2 = null;
element3 = null;
num++;
}
}
public override void LoadXml (XmlElement value)
{
if (value == null)
throw new ArgumentNullException ("value");
if ((value.LocalName != XmlEncryption.ElementNames.EncryptedKey) || (value.NamespaceURI != EncryptedXml.XmlEncNamespaceUrl))
throw new CryptographicException ("Malformed EncryptedKey element.");
else {
EncryptionMethod = null;
EncryptionMethod = null;
EncryptionProperties.Clear ();
ReferenceList.Clear ();
CarriedKeyName = null;
Id = null;
Type = null;
MimeType = null;
Encoding = null;
Recipient = null;
foreach (XmlNode n in value.ChildNodes) {
if (n is XmlWhitespace)
continue;
switch (n.LocalName) {
case XmlEncryption.ElementNames.EncryptionMethod:
EncryptionMethod = new EncryptionMethod ();
EncryptionMethod.LoadXml ((XmlElement) n);
break;
case XmlSignature.ElementNames.KeyInfo:
KeyInfo = new KeyInfo ();
KeyInfo.LoadXml ((XmlElement) n);
break;
case XmlEncryption.ElementNames.CipherData:
CipherData = new CipherData ();
CipherData.LoadXml ((XmlElement) n);
break;
case XmlEncryption.ElementNames.EncryptionProperties:
foreach (XmlElement element in ((XmlElement) n).GetElementsByTagName (XmlEncryption.ElementNames.EncryptionProperty, EncryptedXml.XmlEncNamespaceUrl))
EncryptionProperties.Add (new EncryptionProperty (element));
break;
case XmlEncryption.ElementNames.ReferenceList:
foreach (XmlNode r in ((XmlElement) n).ChildNodes) {
if (r is XmlWhitespace)
continue;
switch (r.LocalName) {
case XmlEncryption.ElementNames.DataReference:
DataReference dr = new DataReference ();
dr.LoadXml ((XmlElement) r);
AddReference (dr);
break;
case XmlEncryption.ElementNames.KeyReference:
KeyReference kr = new KeyReference ();
kr.LoadXml ((XmlElement) r);
AddReference (kr);
break;
}
}
break;
case XmlEncryption.ElementNames.CarriedKeyName:
CarriedKeyName = ((XmlElement) n).InnerText;
break;
}
}
if (value.HasAttribute (XmlEncryption.AttributeNames.Id))
Id = value.Attributes [XmlEncryption.AttributeNames.Id].Value;
if (value.HasAttribute (XmlEncryption.AttributeNames.Type))
Type = value.Attributes [XmlEncryption.AttributeNames.Type].Value;
if (value.HasAttribute (XmlEncryption.AttributeNames.MimeType))
MimeType = value.Attributes [XmlEncryption.AttributeNames.MimeType].Value;
if (value.HasAttribute (XmlEncryption.AttributeNames.Encoding))
Encoding = value.Attributes [XmlEncryption.AttributeNames.Encoding].Value;
if (value.HasAttribute (XmlEncryption.AttributeNames.Recipient))
Encoding = value.Attributes [XmlEncryption.AttributeNames.Recipient].Value;
}
}
protected EncryptedType()
{
cipherData = new CipherData();
encryptionProperties = new EncryptionPropertyCollection();
keyInfo = new KeyInfo();
}
