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//
// EncryptedKey.cs - EncryptedKey implementation for XML Encryption
// http://www.w3.org/2001/04/xmlenc#sec-EncryptedKey
//
// Author:
// Tim Coleman (tim@timcoleman.com)
//
// Copyright (C) Tim Coleman, 2004
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if NET_2_0
using System.Xml;
namespace System.Security.Cryptography.Xml {
public sealed class EncryptedKey : EncryptedType {
#region Fields
string carriedKeyName;
string recipient;
ReferenceList referenceList;
#endregion // Fields
#region Constructors
public EncryptedKey ()
{
referenceList = new ReferenceList ();
}
#endregion // Constructors
#region Properties
public string CarriedKeyName {
get { return carriedKeyName; }
set { carriedKeyName = value; }
}
public string Recipient {
get { return recipient; }
set { recipient = value; }
}
public ReferenceList ReferenceList {
get { return referenceList; }
}
#endregion // Properties
#region Methods
public void AddReference (DataReference dataReference)
{
ReferenceList.Add (dataReference);
}
public void AddReference (KeyReference keyReference)
{
ReferenceList.Add (keyReference);
}
public override XmlElement GetXml ()
{
return GetXml (new XmlDocument ());
}
internal XmlElement GetXml (XmlDocument document)
{
if (CipherData == null)
throw new CryptographicException ("Cipher data is not specified.");
XmlElement xel = document.CreateElement (XmlEncryption.ElementNames.EncryptedKey, EncryptedXml.XmlEncNamespaceUrl);
if (EncryptionMethod != null)
xel.AppendChild (EncryptionMethod.GetXml (document));
if (KeyInfo != null)
xel.AppendChild (document.ImportNode (KeyInfo.GetXml (), true));
if (CipherData != null)
xel.AppendChild (CipherData.GetXml (document));
if (EncryptionProperties.Count > 0) {
XmlElement xep = document.CreateElement (XmlEncryption.ElementNames.EncryptionProperties, EncryptedXml.XmlEncNamespaceUrl);
foreach (EncryptionProperty p in EncryptionProperties)
xep.AppendChild (p.GetXml (document));
xel.AppendChild (xep);
}
if (ReferenceList.Count > 0) {
XmlElement xrl = document.CreateElement (XmlEncryption.ElementNames.ReferenceList, EncryptedXml.XmlEncNamespaceUrl);
foreach (EncryptedReference er in ReferenceList)
xrl.AppendChild (er.GetXml (document));
xel.AppendChild (xrl);
}
if (CarriedKeyName != null) {
XmlElement xck = document.CreateElement (XmlEncryption.ElementNames.CarriedKeyName, EncryptedXml.XmlEncNamespaceUrl);
xck.InnerText = CarriedKeyName;
xel.AppendChild (xck);
}
if (Id != null)
xel.SetAttribute (XmlEncryption.AttributeNames.Id, Id);
if (Type != null)
xel.SetAttribute (XmlEncryption.AttributeNames.Type, Type);
if (MimeType != null)
xel.SetAttribute (XmlEncryption.AttributeNames.MimeType, MimeType);
if (Encoding != null)
xel.SetAttribute (XmlEncryption.AttributeNames.Encoding, Encoding);
if (Recipient != null)
xel.SetAttribute (XmlEncryption.AttributeNames.Recipient, Recipient);
return xel;
}
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;
}
}
#endregion // Methods
}
}
#endif
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