public EncryptedTypeElement(SecurityTokenSerializer keyInfoSerializer)
{
_cipherData = new CipherDataElement();
_encryptionMethod = new EncryptionMethodElement();
_keyInfo = new KeyInfo(keyInfoSerializer);
_properties = new List<string>();
_keyInfoSerializer = keyInfoSerializer;
}
/// <summary>
/// Reads an SecurityKeyIdentifier from a XML stream.
/// </summary>
/// <param name="reader">An XML reader positioned at an SecurityKeyIdentifier (ds: KeyInfo) as defined in 'http://www.w3.org/TR/xmldsig-core'.</param>
/// <returns>SecurityKeyIdentifier.</returns>
/// <exception cref="ArgumentNullException">The <paramref name="reader"/> is null.</exception>
/// <exception cref="InvalidOperationException">If the <paramref name="reader"/> is not positioned at KeyInfo element.</exception>
protected override SecurityKeyIdentifier ReadKeyIdentifierCore(XmlReader reader)
{
if (reader == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("reader");
}
if (reader.IsStartElement(XmlSignatureConstants.Elements.KeyInfo, XmlSignatureConstants.Namespace))
{
KeyInfo keyInfo = new KeyInfo(this);
keyInfo.ReadXml(XmlDictionaryReader.CreateDictionaryReader(reader));
return keyInfo.KeyIdentifier;
}
else
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperXml(reader, SR.GetString(SR.ID4192));
}
}
/// <summary>
/// Reads an "EncryptedType" xmlfragment
/// </summary>
/// <remarks>Assumes that the reader is positioned on an "EncryptedData" or "EncryptedKey" element.
/// Both of these elements extend EncryptedType</remarks>
public virtual void ReadXml(XmlDictionaryReader reader)
{
if (reader == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("reader");
}
reader.MoveToContent();
_id = reader.GetAttribute(XmlEncryptionConstants.Attributes.Id, null);
_type = reader.GetAttribute(XmlEncryptionConstants.Attributes.Type, null);
_mimeType = reader.GetAttribute(XmlEncryptionConstants.Attributes.MimeType, null);
_encoding = reader.GetAttribute(XmlEncryptionConstants.Attributes.Encoding, null);
reader.ReadStartElement();
reader.MoveToContent();
// <EncryptedMethod>? 0 - 1
if (reader.IsStartElement(XmlEncryptionConstants.Elements.EncryptionMethod, XmlEncryptionConstants.Namespace))
{
_encryptionMethod.ReadXml(reader);
}
// <KeyInfo>? 0 - 1
reader.MoveToContent();
if (reader.IsStartElement(XD.XmlSignatureDictionary.KeyInfo.Value, XD.XmlSignatureDictionary.Namespace.Value))
{
_keyInfo = new KeyInfo(_keyInfoSerializer);
// if there is a keyInfo, we need to reset the default which is
// contains a single EmptyKeyInfoClause
if (_keyInfoSerializer.CanReadKeyIdentifier(reader))
{
_keyInfo.KeyIdentifier = _keyInfoSerializer.ReadKeyIdentifier(reader);
}
else
{
_keyInfo.ReadXml(reader);
}
}
// <CipherData> 1
reader.MoveToContent();
_cipherData.ReadXml(reader);
ReadExtensions(reader);
// should be on EndElement for the extended type.
reader.MoveToContent();
reader.ReadEndElement();
}