Methods include establishing a transport layer security connection between the client and a server that provides the web service, identifying at least one cryptographic key for communication with the web service in the connection, closing the connection and communicating between the client and the web service using a web service token that is signed and encrypted according to the identified at least one cryptographic key. Communicating between the client and the web service using a web service token may not require creation of a new transport layer security connection. Further embodiments provide a computer configured to perform operations as described above and computer-readable medium storing instructions that, when executed by a computer, perform operations as described above.