class/System.Security/System.Security.Cryptography.Xml/EncryptionProperty.cs

   1 //
   2 // EncryptionProperty.cs - EncryptionProperty implementation for XML Encryption
   3 // http://www.w3.org/2001/04/xmlenc#sec-EncryptionProperty
   4 //
   5 // Author:
   6 //      Tim Coleman (tim@timcoleman.com)
   7 //
   8 // Copyright (C) Tim Coleman, 2004
   9
  10 //
  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:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  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.
  29 //
  30
  31 #if NET_2_0
  32
  33 using System.Xml;
  34
  35 namespace System.Security.Cryptography.Xml {
  36         public sealed class EncryptionProperty {
  37
  38                 #region Fields
  39
  40                 XmlElement elemProp;
  41                 string id;
  42                 string target;
  43
  44                 #endregion // Fields
  45
  46                 #region Constructors
  47
  48                 public EncryptionProperty ()
  49                 {
  50                 }
  51
  52                 public EncryptionProperty (XmlElement elemProp)
  53                 {
  54                         LoadXml (elemProp);
  55                 }
  56
  57                 #endregion // Constructors
  58
  59                 #region Properties
  60
  61                 public string Id {
  62                         get { return id; }
  63                 }
  64
  65                 public XmlElement PropertyElement {
  66                         get { return elemProp; }
  67                         set { LoadXml (value); }
  68                 }
  69
  70                 public string Target {
  71                         get { return target; }
  72                 }
  73
  74                 #endregion // Properties
  75
  76                 #region Methods
  77
  78                 public XmlElement GetXml ()
  79                 {
  80                         return GetXml (new XmlDocument ());
  81                 }
  82
  83                 internal XmlElement GetXml (XmlDocument document)
  84                 {
  85                         XmlElement xel = document.CreateElement (XmlEncryption.ElementNames.EncryptionProperty, EncryptedXml.XmlEncNamespaceUrl);
  86
  87                         if (Id != null)
  88                                 xel.SetAttribute (XmlEncryption.AttributeNames.Id, Id);
  89                         if (Target != null)
  90                                 xel.SetAttribute (XmlEncryption.AttributeNames.Target, Target);
  91
  92                         return xel;
  93                 }
  94
  95                 public void LoadXml (XmlElement value)
  96                 {
  97                         if (value == null)
  98                                 throw new ArgumentNullException ("value");
  99
 100                         if ((value.LocalName != XmlEncryption.ElementNames.EncryptionProperty) || (value.NamespaceURI != EncryptedXml.XmlEncNamespaceUrl))
 101                                 throw new CryptographicException ("Malformed EncryptionProperty element.");
 102                         else {
 103                                 if (value.HasAttribute (XmlEncryption.AttributeNames.Id))
 104                                         this.id = value.Attributes [XmlEncryption.AttributeNames.Id].Value;
 105                                 if (value.HasAttribute (XmlEncryption.AttributeNames.Target))
 106                                         this.target = value.Attributes [XmlEncryption.AttributeNames.Target].Value;
 107                         }
 108                 }
 109
 110                 #endregion // Methods
 111         }
 112 }
 113
 114 #endif