SEMAFOR: A Framework for Authentication of Aadaptive Multimedia Content and Delivery for Heterogeneous Networks

In this paper we propose SEMAFOR, a Web based platform for protecting adaptive multimedia content delivery in heterogeneous environments. It aims to deliver an end-to-end authenticity of original content exchanged in a heterogeneous network while allowing content adaptation by intermediary proxies between the content transmitter and the final users. Adaptation and authentication management are done by the intermediary proxies, transparently to connected hosts, which totally make an abstraction of these processes. SEMAFOR provides AMCA, a new content authentication framework based on a multi-hop signature scheme using a Merkle hash tree technique, and XSST, a secured transaction protocol that securely exchanges transactions using a message format to encapsulate these transactions in XML form