Methods of content-centric networking, a client, a server and a non-transitory computer-readable storage device storing a computer program product are disclosed. A method of establishing a secure session for transfer of a stream of data packets between a client and a server of a content-centric network is performed by exchanging information in such a way that the namespace of each data packet changes and is related to the previous data packets. The namespaces daisy-chain from one to the other, without the need for any additional authentication needing to take place between the two nodes when transferring a subsequent data packet. As long as both the client and the server derives the correct namespace for each subsequent data packet, it can be assumed that the session between the client and the server is still secure, which significantly improves performance while maintaining security.