FIX: A hotfix that provides a method to support the token authentication without transport security or message encryption in WCF is available for the .NET Framework 3.5 SP1

In Windows Communication Foundation (WCF) token-based authentication in Microsoft .NET Framework 3.5 Service Pack 1 (SP1), the CreateIssuedTokenOverTransportBindingElement method in the SecurityBindingElement class does not work for SharePoint Shared Services, because the services do not require message integrity or confidentiality.

The hotfix that is described in the article adds a CreateIssuedTokenOverUnsecureTransportBindingElement method. This method creates a security binding element that is configured to require SOAP security-based client authentication using an issued token. This binding element does not require the transport layer to provide message integrity or confidentiality.

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

You must have .NET Framework 3.5 Service Pack 1 (SP1) installed to apply this hotfix.

Restart requirement

You do not have to restart the computer after you apply this hotfix if no instance of the .NET Framework is in use.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista SP2 and Windows Server 2008 SP2, x86-based version:

Windows Vista SP2 and Windows Server 2008 SP2, x64-based version:

Windows Server 2008 SP2, Itanium-based version

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

The CreateIssuedTokenOverTransportBindingElement method creates a security binding element that is configured to require SOAP security-based client authentication using an issued token. This binding element requires the transport layer to provide server authentication and message protection, for example, HTTPS. The current method to use issued tokens is to use the message-level security. This method provides the following options:

• Use message protection for the purposes of authentication, confidentiality and integrity.
• Use message protection for client authentication and use the transport security for confidentiality, integrity and server authentication.

The TransportCredentialOnly mode is an equivalent mode for the transport layer that SharePoint uses. It does not provide message integrity nor message confidentiality. However, this mode will not work in the future because the issued tokens in the CreateIssuedTokenOverUnsecureTransportBindingElement method cannot be used to authenticate tokens at the transport layer.