Untraceability and Profiling Are Not Mutually Exclusive
In this paper, we study the concept of privacy-preserving multi-service subscription systems. With such system, service providers can propose to their customers, by the way of a subscription, several distinct services that users can access while being anonymous. We moreover study how users can be untraceable w.r.t. the service provider during the subscription process, in such a way that it is additionally possible to make profiling on the users’ customs. This permits the service provider to propose some advertisements to users while protecting the privacy of the latter, even this may be seen as contradictory. We also propose concrete instantiations, based on signature schemes with extensions from Camenisch and Lysyanskaya.
KeywordsService Provider Group Signature Signature Scheme Discrete Logarithm Commitment Scheme
Unable to display preview. Download preview PDF.
- 4.Brickell, E.F., Camenisch, J., Chen, L.: Direct anonymous attestation. In: ACM Conference on Computer and Communications Security - ACM CCS 2004, pp. 132–145. ACM Press, New York (2004)Google Scholar
- 10.Canard, S., Traoré, J.: List Signature Schemes and Application to Electronic Voting. In: WCC 2003, pp. 81–90 (2003)Google Scholar
- 16.Mastercard and VIsa: Secure Electronic Transaction (SET) (1996)Google Scholar
- 19.Schnorr, C.P.: Efficient identification and signatures for smart cards. In: Brassard, G. (ed.) CRYPTO 1989. LNCS, vol. 435, pp. 239–252. Springer, Heidelberg (1990)Google Scholar