Anonymity Metrics Revisited

Anonymous Communication and its Applications

计算机科学;物理学

Claudia Díaz

Others  :  http://drops.dagstuhl.de/opus/volltexte/2006/483/pdf/05411.DiazClaudia.ExtAbstract.483.pdf
PID  :  6720

学科分类：计算机科学（综合）

来源: CEUR

【 摘 要 】

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 entropy-based anonymity metrics, and we apply them to Crowds, a practical anonymity system. We discuss the differences between the two metrics and the results obtained in the example.