System.ServiceModel 4.0.0.0 System.Enum This mode describes how the client and server compute a shared symmetric key to use with a token issued by the server. Describes the source of entropy used for key generation. Field 4.0.0.0 System.ServiceModel.Security.SecurityKeyEntropyMode The client provides the key used for the issued token. Field 4.0.0.0 System.ServiceModel.Security.SecurityKeyEntropyMode The client and server both provide entropy that is combined using the P-SHA1 function to derive the key of the issued token. Field 4.0.0.0 System.ServiceModel.Security.SecurityKeyEntropyMode The server provides the key for the issued token.