Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: IResearch Article HOP: Achieving Efficient Anonymity in MANETs by Combining HIP, OLSR, and Pseudonyms | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2011 Article ID 437868 14 pages doi 2011 437868 Research Article HOP Achieving Efficient Anonymity in MANETs by Combining HIP OLSR and Pseudonyms Javier Campos Carlos T. Calafate Marga Nacher Pietro Manzoni and Juan-Carlos Cano DISCA Universidad Politecnica de Valencia Camino de Vera s n 46022 Valencia Spain Correspondence should be addressed to Carlos T. Calafate calafate@ Received 19 May 2010 Revised 31 July 2010 Accepted 1 September 2010 Academic Editor Damien Sauveron Copyright 2011 Javier Campos et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Offering secure and anonymous communications in mobile ad hoc networking environments is essential to achieve confidence and privacy thus promoting widespread adoption of this kind of networks. In addition some minimum performance levels must be achieved for any solution to be practical and become widely adopted. In this paper we propose and implement HOP a novel solution based on cryptographic Host Identity Protocol HIP that offers security and user-level anonymity in MANET environments while maintaining good performance levels. In particular we introduce enhancements to the authentication process to achieve Host Identity Tag HIT relationship anonymity along with source destination HIT anonymity when combined with multihoming. Afterward we detail how we integrate our improved version of HIP with the OLSR routing protocol to achieve efficient support for pseudonyms. We implemented our proposal in an experimental testbed and the results obtained show that performance levels achieved are quite good and that the integration with OLSR is achieved with a low overhead. 1. Introduction In the last decade mobile ad hoc networks MANETs have been one
