2 // EncryptedKey.cs - EncryptedKey implementation for XML Encryption
3 // http://www.w3.org/2001/04/xmlenc#sec-EncryptedKey
6 // Tim Coleman (tim@timcoleman.com)
8 // Copyright (C) Tim Coleman, 2004
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 namespace System
.Security
.Cryptography
.Xml
{
36 public sealed class EncryptedKey
: EncryptedType
{
40 string carriedKeyName
;
42 ReferenceList referenceList
;
48 public EncryptedKey ()
51 CarriedKeyName
= null;
53 ReferenceList
= new ReferenceList ();
56 #endregion // Constructors
60 public string CarriedKeyName
{
61 get { return carriedKeyName; }
62 set { carriedKeyName = value; }
65 public string Recipient
{
66 get { return recipient; }
67 set { recipient = value; }
70 public ReferenceList ReferenceList
{
71 get { return referenceList; }
72 set { referenceList = value; }
75 #endregion // Properties
79 public void AddReference (DataReference dataReference
)
81 ReferenceList
.Add (dataReference
);
84 public void AddReference (KeyReference keyReference
)
86 ReferenceList
.Add (keyReference
);
89 public override XmlElement
GetXml ()
91 return GetXml (new XmlDocument ());
94 internal XmlElement
GetXml (XmlDocument document
)
96 if (CipherData
== null)
97 throw new CryptographicException ("Cipher data is not specified.");
99 XmlElement xel
= document
.CreateElement (XmlEncryption
.ElementNames
.EncryptedKey
, EncryptedXml
.XmlEncNamespaceUrl
);
101 if (EncryptionMethod
!= null)
102 xel
.AppendChild (EncryptionMethod
.GetXml (document
));
104 xel
.AppendChild (document
.ImportNode (KeyInfo
.GetXml (), true));
105 if (CipherData
!= null)
106 xel
.AppendChild (CipherData
.GetXml (document
));
108 if (EncryptionProperties
.Count
> 0) {
109 XmlElement xep
= document
.CreateElement (XmlEncryption
.ElementNames
.EncryptionProperties
, EncryptedXml
.XmlEncNamespaceUrl
);
110 foreach (EncryptionProperty p
in EncryptionProperties
)
111 xep
.AppendChild (p
.GetXml (document
));
112 xel
.AppendChild (xep
);
115 if (ReferenceList
.Count
> 0) {
116 XmlElement xrl
= document
.CreateElement (XmlEncryption
.ElementNames
.ReferenceList
, EncryptedXml
.XmlEncNamespaceUrl
);
117 foreach (EncryptedReference er
in ReferenceList
)
118 xrl
.AppendChild (er
.GetXml (document
));
119 xel
.AppendChild (xrl
);
122 if (CarriedKeyName
!= null) {
123 XmlElement xck
= document
.CreateElement (XmlEncryption
.ElementNames
.CarriedKeyName
, EncryptedXml
.XmlEncNamespaceUrl
);
124 xck
.InnerText
= CarriedKeyName
;
125 xel
.AppendChild (xck
);
129 xel
.SetAttribute (XmlEncryption
.AttributeNames
.Id
, Id
);
131 xel
.SetAttribute (XmlEncryption
.AttributeNames
.Type
, Type
);
132 if (MimeType
!= null)
133 xel
.SetAttribute (XmlEncryption
.AttributeNames
.MimeType
, MimeType
);
134 if (Encoding
!= null)
135 xel
.SetAttribute (XmlEncryption
.AttributeNames
.Encoding
, Encoding
);
136 if (Recipient
!= null)
137 xel
.SetAttribute (XmlEncryption
.AttributeNames
.Recipient
, Recipient
);
141 public override void LoadXml (XmlElement
value)
144 throw new ArgumentNullException ("value");
146 if ((value.LocalName
!= XmlEncryption
.ElementNames
.EncryptedKey
) || (value.NamespaceURI
!= EncryptedXml
.XmlEncNamespaceUrl
))
147 throw new CryptographicException ("Malformed EncryptedKey element.");
149 EncryptionMethod
= null;
150 KeyInfo keyInfo
= null;
151 CipherData cipherData
= null;
152 EncryptionMethod
= null;
153 EncryptionProperties
= new EncryptionProperties ();
154 ReferenceList
= new ReferenceList ();
155 CarriedKeyName
= null;
162 foreach (XmlNode n
in value.ChildNodes
) {
163 if (n
is XmlWhitespace
)
166 switch (n
.LocalName
) {
167 case XmlEncryption
.ElementNames
.EncryptionMethod
:
168 EncryptionMethod
= new EncryptionMethod ();
169 EncryptionMethod
.LoadXml ((XmlElement
) n
);
171 case XmlSignature
.ElementNames
.KeyInfo
:
172 KeyInfo
= new KeyInfo ();
173 KeyInfo
.LoadXml ((XmlElement
) n
);
175 case XmlEncryption
.ElementNames
.CipherData
:
176 CipherData
= new CipherData ();
177 CipherData
.LoadXml ((XmlElement
) n
);
179 case XmlEncryption
.ElementNames
.EncryptionProperties
:
180 foreach (XmlElement element
in ((XmlElement
) n
).GetElementsByTagName (XmlEncryption
.ElementNames
.EncryptionProperty
, EncryptedXml
.XmlEncNamespaceUrl
))
181 EncryptionProperties
.Add (new EncryptionProperty (element
));
183 case XmlEncryption
.ElementNames
.ReferenceList
:
184 foreach (XmlNode r
in ((XmlElement
) n
).ChildNodes
) {
185 if (r
is XmlWhitespace
)
188 switch (r
.LocalName
) {
189 case XmlEncryption
.ElementNames
.DataReference
:
190 DataReference dr
= new DataReference ();
191 dr
.LoadXml ((XmlElement
) r
);
194 case XmlEncryption
.ElementNames
.KeyReference
:
195 KeyReference kr
= new KeyReference ();
196 kr
.LoadXml ((XmlElement
) r
);
202 case XmlEncryption
.ElementNames
.CarriedKeyName
:
203 CarriedKeyName
= ((XmlElement
) n
).InnerText
;
208 if (value.HasAttribute (XmlEncryption
.AttributeNames
.Id
))
209 Id
= value.Attributes
[XmlEncryption
.AttributeNames
.Id
].Value
;
210 if (value.HasAttribute (XmlEncryption
.AttributeNames
.Type
))
211 Type
= value.Attributes
[XmlEncryption
.AttributeNames
.Type
].Value
;
212 if (value.HasAttribute (XmlEncryption
.AttributeNames
.MimeType
))
213 MimeType
= value.Attributes
[XmlEncryption
.AttributeNames
.MimeType
].Value
;
214 if (value.HasAttribute (XmlEncryption
.AttributeNames
.Encoding
))
215 Encoding
= value.Attributes
[XmlEncryption
.AttributeNames
.Encoding
].Value
;
216 if (value.HasAttribute (XmlEncryption
.AttributeNames
.Recipient
))
217 Encoding
= value.Attributes
[XmlEncryption
.AttributeNames
.Recipient
].Value
;
221 #endregion // Methods