public static SmtpAddress Decrypt(XmlElement encryptedSharingKey, SymmetricSecurityKey symmetricSecurityKey)
{
XmlDocument xmlDocument = new SafeXmlDocument();
try
{
xmlDocument.AppendChild(xmlDocument.ImportNode(encryptedSharingKey, true));
}
catch (XmlException)
{
SharingKeyHandler.Tracer.TraceError <string>(0L, "Unable to import XML element of sharing key: {0}", encryptedSharingKey.OuterXml);
return(SmtpAddress.Empty);
}
EncryptedXml encryptedXml = new EncryptedXml(xmlDocument);
encryptedXml.AddKeyNameMapping("key", symmetricSecurityKey.GetSymmetricAlgorithm("http://www.w3.org/2001/04/xmlenc#tripledes-cbc"));
try
{
encryptedXml.DecryptDocument();
}
catch (CryptographicException)
{
SharingKeyHandler.Tracer.TraceError <string>(0L, "Unable to decrypt XML element sharing key: {0}", encryptedSharingKey.OuterXml);
return(SmtpAddress.Empty);
}
return(new SmtpAddress(xmlDocument.DocumentElement.InnerText));
}
public static XmlElement Decrypt(XmlElement xmlElement, SymmetricSecurityKey symmetricSecurityKey)
{
XmlDocument xmlDocument = new SafeXmlDocument();
XmlNode newChild = xmlDocument.ImportNode(xmlElement, true);
xmlDocument.AppendChild(newChild);
EncryptedXml encryptedXml = new EncryptedXml(xmlDocument);
encryptedXml.AddKeyNameMapping("key", symmetricSecurityKey.GetSymmetricAlgorithm("http://www.w3.org/2001/04/xmlenc#tripledes-cbc"));
encryptedXml.DecryptDocument();
return(xmlDocument.DocumentElement);
}
