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<messageSenderAuthentication> element

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Specifies authentication options for peer-to-peer message senders.

For more information about peer-to-peer programming, see Peer-to-Peer Networking.

<configuration>
  <system.serviceModel>
    <behaviors>
      <endpointBehaviors>
        <behavior>
          <clientCredentials>
            <peer>
              <messageSenderAuthentication>

Syntax

<messageSenderAuthentication customCertificateValidatorType= "namespace.typeName, [,AssemblyName] [,Version=version number] [,Culture=culture] [,PublicKeyToken=token]"
                             certificateValidationMode = "ChainTrust/None/PeerTrust/PeerOrChainTrust/Custom"
                             revocationMode="NoCheck/Online/Offline"
                             trustedStoreLocation="CurrentUser/LocalMachine" />

Attributes and Elements

The following sections describe attributes, child elements, and parent elements

Attributes

Attribute Description
customCertificateValidatorType A type and assembly used to validate a custom type. This attribute must be set when certificateValidationMode is set to Custom.
certificateValidationMode Specifies one of three modes used to validate credentials. If set to Custom, then a customCertificateValidator must also be supplied.
revocationMode One of the modes used to check for a revoked certificate lists (CRL).
trustedStoreLocation One of the two system store locations: LocalMachine or CurrentUser. This value is used when a service certificate is negotiated to the client. Validation is performed against the Trusted People store in the specified store location.

customCertificateValidatorType Attribute

Value Description
String Optional. Specifies the type name and assembly and other data used to find the type. At minimum, a namespace and type name are required. Optional information includes: assembly name, version number, culture, and public key token.

certificateValidationMode Attribute

Value Description
Enumeration Optional. One of the following values: None, PeerTrust, ChainTrust, PeerOrChainTrust, Custom. The default is ChainTrust. The default is ChainTrust.

For more information, see Working with Certificates.

revocationMode Attribute

Value Description
Enumeration One of the following values: NoCheck, Online, Offline. The default is Online.

For more information, see Working with Certificates.

trustedStoreLocation Attribute

Value Description
Enumeration One of the following values: LocalMachine or CurrentUser. The default is CurrentUser. If the client application is running under a system account then the certificate is typically under LocalMachine. If the client application is running under a user account then the certificate is typically in CurrentUser. The default is CurrentUser.

Child Elements

None.

Parent Elements

Element Description
<peer> Specifies a credential used for authenticating the client to a peer service.

Remarks

This element must be configured if message authentication is chosen. For output channels, each message is signed using the certificate provided by <certificate>. All messages, before delivered to the application, are checked against the message credential using the validator specified by the customCertificateValidatorType attribute of this element. The validator can either accept or reject the credential.

Example

The following code sets the message sender validation mode to PeerOrChainTrust.

<behaviors>
  <endpointBehaviors>
    <behavior name="MyEndpointBehavior">
      <clientCredentials>
        <peer>
          <certificate findValue="www.contoso.com"
                       storeLocation="LocalMachine"
                       x509FindType="FindByIssuerName" />
          <messageSenderAuthentication certificateValidationMode="PeerOrChainTrust" />
          <messageSenderAuthentication certificateValidationMode="None" />
        </peer>
      </clientCredentials>
    </behavior>
  </endpointBehaviors>
</behaviors>

See also