17th International Workshop on Database and Expert Systems Applications (DEXA'06) (2006)
Sept. 4, 2006 to Sept. 8, 2006
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/DEXA.2006.17
Esther Palomar , Carlos III University of Madrid, Spain
Juan M. Estevez-Tapiador , Carlos III University of Madrid, Spain
Julio C. Hernandez-Castro , Carlos III University of Madrid, Spain
Arturo Ribagorda , Carlos III University of Madrid, Spain
A significant challenge for Peer-to-Peer (P2P) systems is maintaining the correctness and consistency of their global data structures and shared contents as peers independently and unpredictably join and leave the system. In such networks, it is necessary that some security mechanisms will be applied with the aim of avoiding attacks based on nonauthorized content modifications. In this paper, we propose a content authentication protocol for pure P2P networks. The scheme also incorporates a rational content access procedure based on proofs of computational effort. Our proposal relies on a set of peers playing the role of a certification authority, since it is unrealistic to assume that appropriate trusted third parties can be deployed in such environments.
J. M. Estevez-Tapiador, J. C. Hernandez-Castro, E. Palomar and A. Ribagorda, "A Protocol for Secure Content Distribution in Pure P2P Networks," 17th International Workshop on Database and Expert Systems Applications (DEXA'06)(DEXA), Krakow, Poland, 2006, pp. 712-716.