Measuring Anonymity Revisited
نویسندگان
چکیده
Anonymous message transmission systems are the building blocks of several high-level anonymity services (e.g. epayment, e-voting). Therefore, it is essential to give a theoretically based but also practically usable objective numerical measure for the provided level of anonymity. In this paper two entropybased anonymity measures will be analyzed and some shortcomings of these methods will be highlighted. Finally, sourceand destination-hiding properties will be introduced for so called local anonymity, an aspect reflecting the point of view of the users.
منابع مشابه
Anonymity Metrics Revisited
In 2001, two information theoretic anonymity metrics were proposed: the effective anonymity set size and the degree of anonymity. Here, we propose an abstract model for a general anonymity system which is consistent with the definition of anonymity on which the metrics are based. We revisit entropybased anonymity metrics, and we apply them to Crowds, a practical anonymity system. We discuss the...
متن کاملAnonymity in Voting Revisited
According to international law, anonymity of the voter is a fundamental precondition for democratic elections. In electronic voting, several aspects of voter anonymity have been identified. In this paper, we re-examine anonymity with respect to voting, and generalise existing notions of anonymity in e-voting. First, we identify and categorise the types of attack that can be a threat to anonymit...
متن کاملAnonymity revisited: the degree of the knowledge transfer
Anonymity has been regarded mainly as anonymity of the person who did something. We believe that the anonymity of the subject may not be a primary concern and the more important part would be the fact that the subject did some deed. We focus on the relationship of the subject and the deed. Another argument we raise here is the need of quantitative measures for the anonymity. Anonymity has been ...
متن کاملMeasuring Anonymity with Relative Entropy
Anonymity is the property of maintaining secret the identity of users performing a certain action. Anonymity protocols often use random mechanisms which can be described probabilistically. In this paper, we propose a probabilistic process calculus to describe protocols for ensuring anonymity, and we use the notion of relative entropy from information theory to measure the degree of anonymity th...
متن کاملA Case Study on Measuring Statistical Data in the Tor Anonymity Network
The Tor network is one of the largest deployed anonymity networks, consisting of 1500+ volunteer-run relays and probably hundreds of thousands of clients connecting every day. Its large user-base has made it attractive for researchers to analyze usage of a real deployed anonymity network. The recent growth of the network has also led to performance problems, as well as attempts by some governme...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2004