Abstract
Self-protecting access control mechanisms can be described as an approach to enforcing security in a manner that automatically protects against violations of access control rules. In this chapter, we present a comparative analysis of standard Cryptographic Access Control (CAC) schemes in relation to privacy enforcement on the Web. We postulate that to mitigate privacy violations, self-protecting CAC mechanisms need to be supported by fault-tolerance. As an example of how one might to do this, we present two solutions that are inspired by the autonomic computing paradigm1. Our solutions are centered on how CAC schemes can be extended to protect against privacy violations that might arise from key updates and collusion attacks.
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