System.ServiceModel 4.0.0.0 System.Enum This enumeration specifies the signing and encrypting relationships between a message and its signature. An enumeration that lists the ways in which security tokens are attached. Field 4.0.0.0 System.ServiceModel.Security.SecurityTokenAttachmentMode The token is used to sign the message signature. Field 4.0.0.0 System.ServiceModel.Security.SecurityTokenAttachmentMode The token is included in the message signature. Field 4.0.0.0 System.ServiceModel.Security.SecurityTokenAttachmentMode The token is included in the message signature and is encrypted. Field 4.0.0.0 System.ServiceModel.Security.SecurityTokenAttachmentMode The token is included in and signs the message signature.