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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Security
{
using System.IO;
using System.ServiceModel.Channels;
using System.ServiceModel;
using System.IdentityModel.Tokens;
using System.IdentityModel.Selectors;
using System.Security.Cryptography;
using System.Xml;
using DictionaryManager = System.IdentityModel.DictionaryManager;
using ISecurityElement = System.IdentityModel.ISecurityElement;
sealed class EncryptedHeaderXml
{
internal static readonly XmlDictionaryString ElementName = XD.SecurityXXX2005Dictionary.EncryptedHeader;
internal static readonly XmlDictionaryString NamespaceUri = XD.SecurityXXX2005Dictionary.Namespace;
const string Prefix = SecurityXXX2005Strings.Prefix;
string id;
bool mustUnderstand;
bool relay;
string actor;
MessageVersion version;
EncryptedData encryptedData;
public EncryptedHeaderXml(MessageVersion version, bool shouldReadXmlReferenceKeyInfoClause)
{
this.version = version;
encryptedData = new EncryptedData();
// This is for the case when the service send an EncryptedHeader to the client where the KeyInfo clause contains referenceXml clause.
encryptedData.ShouldReadXmlReferenceKeyInfoClause = shouldReadXmlReferenceKeyInfoClause;
}
public string Actor
{
get
{
return this.actor;
}
set
{
this.actor = value;
}
}
public string EncryptionMethod
{
get
{
return encryptedData.EncryptionMethod;
}
set
{
encryptedData.EncryptionMethod = value;
}
}
public XmlDictionaryString EncryptionMethodDictionaryString
{
get
{
return encryptedData.EncryptionMethodDictionaryString;
}
set
{
encryptedData.EncryptionMethodDictionaryString = value;
}
}
public bool HasId
{
get
{
return true;
}
}
public string Id
{
get
{
return id;
}
set
{
id = value;
}
}
public SecurityKeyIdentifier KeyIdentifier
{
get
{
return encryptedData.KeyIdentifier;
}
set
{
encryptedData.KeyIdentifier = value;
}
}
public bool MustUnderstand
{
get
{
return this.mustUnderstand;
}
set
{
this.mustUnderstand = value;
}
}
public bool Relay
{
get
{
return this.relay;
}
set
{
this.relay = value;
}
}
public SecurityTokenSerializer SecurityTokenSerializer
{
get
{
return encryptedData.SecurityTokenSerializer;
}
set
{
encryptedData.SecurityTokenSerializer = value;
}
}
public byte[] GetDecryptedBuffer()
{
return encryptedData.GetDecryptedBuffer();
}
public void ReadFrom(XmlDictionaryReader reader, long maxBufferSize)
{
reader.MoveToStartElement(ElementName, NamespaceUri);
bool isReferenceParameter;
MessageHeader.GetHeaderAttributes(reader, version, out this.actor, out this.mustUnderstand, out this.relay, out isReferenceParameter);
this.id = reader.GetAttribute(XD.UtilityDictionary.IdAttribute, XD.UtilityDictionary.Namespace);
reader.ReadStartElement();
encryptedData.ReadFrom(reader, maxBufferSize);
reader.ReadEndElement();
}
public void SetUpDecryption(SymmetricAlgorithm algorithm)
{
encryptedData.SetUpDecryption(algorithm);
}
public void SetUpEncryption(SymmetricAlgorithm algorithm, MemoryStream source)
{
encryptedData.SetUpEncryption(algorithm, new ArraySegment<byte>(source.GetBuffer(), 0, (int) source.Length));
}
public void WriteHeaderElement(XmlDictionaryWriter writer)
{
writer.WriteStartElement(Prefix, ElementName, NamespaceUri);
}
public void WriteHeaderId(XmlDictionaryWriter writer)
{
writer.WriteAttributeString(XD.UtilityDictionary.Prefix.Value, XD.UtilityDictionary.IdAttribute, XD.UtilityDictionary.Namespace, id);
}
public void WriteHeaderContents(XmlDictionaryWriter writer)
{
this.encryptedData.WriteTo(writer, ServiceModelDictionaryManager.Instance);
}
}
}
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