Anon_Terminology_v0.32

Anon_Terminology_v0.32 - A terminology for talking about...

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Unformatted text preview: A terminology for talking about privacy by data minimization: Anonymity, Unlinkability, Undetectability, Unobservability, Pseudonymity, and Identity Management (Version v0.32 December 18, 2009) Andreas Pfitzmann Marit Hansen TU Dresden ULD Kiel pfitza@inf.tu-dresden.de marit.hansen@datenschutzzentrum.de Archive of this Document http://dud.inf.tu-dresden.de/Anon_Terminology.shtml (v0.5 and all succeeding versions) Starting with v0.20, color is essential to understand the figures and part of the translations. Abstract Based on the nomenclature of the early papers in the field privacy by data minimization , we propose a terminology which is both expressive and precise. More particularly, we define anonymity , unlinkability , linkability , undetectability , unobservability , pseudonymity ( pseudonyms and digital pseudonyms , and their attributes), identifiability , identity , partial identity , digital identity and identity management . In addition, we describe the relationships between these terms, give a rationale why we define them as we do, and sketch the main mechanisms to provide for the properties defined. Table of contents 1 Introduction...................................................................................................................................6 2 Setting ..........................................................................................................................................6 3 Anonymity.....................................................................................................................................9 4 Unlinkability ................................................................................................................................12 5 Anonymity in terms of unlinkability .............................................................................................14 6 Undetectability and unobservability............................................................................................15 7 Relationships between terms .....................................................................................................18 8 Known mechanisms for anonymity, undetectability, and unobservability...................................19 9 Pseudonymity.............................................................................................................................20 10 Pseudonymity with respect to accountability and authorization ...............................................23 10.1 Digital pseudonyms to authenticate messages .................................................................23 10.2 Accountability for digital pseudonyms................................................................................23 10.3 Transferring authenticated attributes and authorizations between pseudonyms...............23 11 Pseudonymity with respect to linkability ...................................................................................24 11.1 Knowledge of the linking between the pseudonym and its holder.....................................2411....
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This note was uploaded on 01/18/2012 for the course CIS 4930 taught by Professor Staff during the Fall '08 term at University of Florida.

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Anon_Terminology_v0.32 - A terminology for talking about...

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