SecurityTokenProvider 類別
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
表示安全性權杖提供者，這個提供者可處理 SOAP 訊息寄件者的安全性權杖。
public ref class SecurityTokenProvider abstractpublic abstract class SecurityTokenProvidertype SecurityTokenProvider = classPublic MustInherit Class SecurityTokenProvider- 繼承
-
SecurityTokenProvider
- 衍生
範例
using System;
using System.IdentityModel.Selectors;
using System.IdentityModel.Tokens;
using System.IO;
using System.ServiceModel.Security;
using System.Xml;
namespace Microsoft.ServiceModel.Samples
{
/// <summary>
/// class that derives from SecurityTokenProvider and returns a SecurityToken representing a SAML assertion
/// </summary>
public class SamlSecurityTokenProvider : SecurityTokenProvider
{
/// <summary>
/// The SAML assertion that the SamlSecurityTokenProvider will return as a SecurityToken
/// </summary>
SamlAssertion assertion;
/// <summary>
/// The proof token associated with the SAML assertion
/// </summary>
SecurityToken proofToken;
/// <summary>
/// Constructor
/// </summary>
/// <param name="assertion">The SAML assertion that the SamlSecurityTokenProvider will return as a SecurityToken</param>
/// <param name="proofToken">The proof token associated with the SAML assertion</param>
public SamlSecurityTokenProvider(SamlAssertion assertion, SecurityToken proofToken )
{
this.assertion = assertion;
this.proofToken = proofToken;
}
/// <summary>
/// Creates the security token
/// </summary>
/// <param name="timeout">Maximum amount of time the method is supposed to take. Ignored in this implementation.</param>
/// <returns>A SecurityToken corresponding the SAML assertion and proof key specified at construction time</returns>
protected override SecurityToken GetTokenCore(TimeSpan timeout)
{
// Create a SamlSecurityToken from the provided assertion
SamlSecurityToken samlToken = new SamlSecurityToken(assertion);
// Create a SecurityTokenSerializer that will be used to serialize the SamlSecurityToken
WSSecurityTokenSerializer ser = new WSSecurityTokenSerializer();
// Create a memory stream to write the serialized token into
// Use an initial size of 64Kb
MemoryStream s = new MemoryStream(UInt16.MaxValue);
// Create an XmlWriter over the stream
XmlWriter xw = XmlWriter.Create(s);
// Write the SamlSecurityToken into the stream
ser.WriteToken(xw, samlToken);
// Seek back to the beginning of the stream
s.Seek(0, SeekOrigin.Begin);
// Load the serialized token into a DOM
XmlDocument dom = new XmlDocument();
dom.Load(s);
// Create a KeyIdentifierClause for the SamlSecurityToken
SamlAssertionKeyIdentifierClause samlKeyIdentifierClause = samlToken.CreateKeyIdentifierClause<SamlAssertionKeyIdentifierClause>();
// Return a GenericXmlToken from the XML for the SamlSecurityToken, the proof token, the valid from
// and valid until times from the assertion and the key identifier clause created above
return new GenericXmlSecurityToken(dom.DocumentElement, proofToken, assertion.Conditions.NotBefore, assertion.Conditions.NotOnOrAfter, samlKeyIdentifierClause, samlKeyIdentifierClause, null);
}
}
}
Imports System.IdentityModel.Selectors
Imports System.IdentityModel.Tokens
Imports System.IO
Imports System.ServiceModel.Security
Imports System.Xml
'/ <summary>
'/ class that derives from SecurityTokenProvider and returns a SecurityToken representing a SAML assertion
'/ </summary>
Public Class SamlSecurityTokenProvider
Inherits SecurityTokenProvider
'/ <summary>
'/ The SAML assertion that the SamlSecurityTokenProvider will return as a SecurityToken
'/ </summary>
Private assertion As SamlAssertion
'/ <summary>
'/ The proof token associated with the SAML assertion
'/ </summary>
Private proofToken As SecurityToken
'/ <summary>
'/ Constructor
'/ </summary>
'/ <param name="assertion">The SAML assertion that the SamlSecurityTokenProvider will return as a SecurityToken</param>
'/ <param name="proofToken">The proof token associated with the SAML assertion</param>
Public Sub New(ByVal assertion As SamlAssertion, ByVal proofToken As SecurityToken)
Me.assertion = assertion
Me.proofToken = proofToken
End Sub
'/ <summary>
'/ Creates the security token
'/ </summary>
'/ <param name="timeout">Maximum amount of time the method is supposed to take. Ignored in this implementation.</param>
'/ <returns>A SecurityToken corresponding the SAML assertion and proof key specified at construction time</returns>
Protected Overrides Function GetTokenCore(ByVal timeout As TimeSpan) As SecurityToken
' Create a SamlSecurityToken from the provided assertion
Dim samlToken As New SamlSecurityToken(assertion)
' Create a SecurityTokenSerializer that will be used to serialize the SamlSecurityToken
Dim ser As New WSSecurityTokenSerializer()
' Create a memory stream to write the serialized token into
' Use an initial size of 64Kb
Dim s As New MemoryStream(UInt16.MaxValue)
' Create an XmlWriter over the stream
Dim xw As XmlWriter = XmlWriter.Create(s)
' Write the SamlSecurityToken into the stream
ser.WriteToken(xw, samlToken)
' Seek back to the beginning of the stream
s.Seek(0, SeekOrigin.Begin)
' Load the serialized token into a DOM
Dim dom As New XmlDocument()
dom.Load(s)
' Create a KeyIdentifierClause for the SamlSecurityToken
Dim samlKeyIdentifierClause As SamlAssertionKeyIdentifierClause = samlToken.CreateKeyIdentifierClause(Of SamlAssertionKeyIdentifierClause)()
' Return a GenericXmlToken from the XML for the SamlSecurityToken, the proof token, the valid from
' and valid until times from the assertion and the key identifier clause created above
Return New GenericXmlSecurityToken(dom.DocumentElement, proofToken, assertion.Conditions.NotBefore, assertion.Conditions.NotOnOrAfter, samlKeyIdentifierClause, samlKeyIdentifierClause, Nothing)
End Function 'GetTokenCore
End Class
備註
在需要自訂安全性權杖的情況下使用 SecurityTokenProvider 類別。 當 SOAP 訊息是由用戶端傳送而此時要使用安全性權杖來驗證該用戶端時，安全性權杖提供者的角色就是要負責取得此安全性權杖。 具體地說，這時會呼叫 GetToken 方法來取得安全性權杖。 使用 CancelToken 和 RenewToken 方法來取消和更新安全性時，也可以呼叫安全性權杖提供者。
衍生自 SecurityTokenManager 類別的類別會實作 CreateSecurityTokenProvider 方法，判定指定之安全性權杖所需要的安全性權杖提供者。
ClientCredentialsSecurityTokenManager 和 ServiceCredentialsSecurityTokenManager 類別會提供內建安全性權杖型別的預設實作 (Implementation)。 在自訂安全性權杖案例中，您必須從 SecurityTokenManager、ClientCredentialsSecurityTokenManager 或 ServiceCredentialsSecurityTokenManager 其中一個類別衍生類別，並提供可以為自訂安全性權杖建立安全性權杖提供者、安全性權杖驗證程式和安全性權杖序列化程式的功能。 如需建立自訂權杖的詳細資訊，請參閱 如何：建立自訂權杖。
建構函式
| SecurityTokenProvider() |
初始化 SecurityTokenProvider 類別的新執行個體。 |
屬性
| SupportsTokenCancellation |
取得值，這個值表示是否可以取消安全性權杖。 |
| SupportsTokenRenewal |
取得值，這個值表示是否可以更新安全性權杖。 |
