Fajardo Portillo, Jose Oscar

Personal information

Fajardo Portillo, Jose Oscar

Address: Alda. de Urquijo s/n. C.P.: 48013. Bilbao
Email: joseoscar.fajardo@ehu.es
Telephone: +34 94 601 7361


Academic degrees

University Degree

Career: Engineering in Telecommunications
Intensificación: Telematics
Center: University of The Basque Country
Date of achievement: 2003


Program title: Tecnologías de la Información y Comunicaciones en Redes Móviles
DEA date of achievement: 2005
Thesis title: Adaptación de los mecanismos de provisión de calidad de servicio a las preferencias de los usuarios (Adaptation of QoS provisioning mechanisms to user requirements)
Date of achievement: (In progress)


End-to-middle-to-end solution for IMS media plane security [accepted]

Jose Oscar Fajardo, Fidel Liberal, Fudong Li, Nathan Clarke, Is-Haka Mkwawa
Electronic Commerce Research (Springer)

IP Multimedia Subsystem (IMS) is becoming the prevailing candidate for managing future mobile multimedia communications, including critical communications such as public safety, emergency professionals and corporate networks. IMS security and privacy has gained much attention in the few last years. The review of recent IMS security activities stresses the inclusion of intermediate nodes in the media path of secured communications as an open issue. This paper presents an end-to-middle-to-end solution which enables the usage of IMS media plane elements such as recorders, transcoders and novel cross-ciphering functions in a secure way. The proposed solution, which is fully compliant with IMS, includes the network architecture, the signaling plane for session signaling and key management, and the media-plane security characteristics. Experimental results demonstrate that the proposed solution can provide media interoperability (both transcoding and cross-ciphering) with a cost of 17% overhead to a standard IMS call setup in the signaling plane.

Conference Papers