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  1. Proceedings of the 7th ACM workshop on Digital identity management (DIM '11)
  2. A comprehensive framework enabling data-minimizing authentication
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Identity management tools for protecting online privacy
GISL: a generalized identity specification language based on XML schema
Who needs Facebook or Google+ anyway: privacy and sociality in social network sites
Johnny in internet café: user study and exploration of password autocomplete in web browsers
Anonymous credentials from (indexed) aggregate signatures
Behavioral biometrics for persistent single sign-on
A comprehensive framework enabling data-minimizing authentication
Leveraging social networks to gain access to organisational resources
The power of recognition: secure single sign-on using TLS channel bindings
Client-based authentication technology: user-centric authentication using secure containers
Digital identity security architecture in Ethos

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A comprehensive framework enabling data-minimizing authentication

Content Provider ACM Digital Library
Author Preiss, Franz-Stefan Bichsel, Patrik Camenisch, Jan
Abstract Classical authentication mechanisms have various drawbacks such as the weak security properties they achieve, users' privacy, service providers' data quality, and the necessary protection of the collected data. Credential-based authentication is a first step towards overcoming these drawbacks. When used with anonymous credentials, the personal data disclosed can be reduced to the minimum with respect to a business purpose while improving the assurance of the communicated data. However, this privacy-preserving combination of technologies is not used today. One reason for this lack of adoption is that a comprehensive framework for privacy-enhancing credential-based authentication is not available. In this paper we review the different components of such an authentication framework and show that one remaining missing piece is a translation between high-level authentication policies and the cryptographic token specification level. We close this gap by (1) proposing an adequate claim language specifying which certified data a user wants to reveal to satisfy a policy and by (2) providing translation algorithms for generating the anonymous credentials (cryptographic tokens) providing the data to be revealed. For the latter we consider the Identity Mixer and the U-Prove technologies, where we provide detailed translation instructions for the former.
Starting Page 13
Ending Page 22
Page Count 10
File Format PDF
ISBN 9781450310062
DOI 10.1145/2046642.2046647
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2011-10-21
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Access control Privacy Anonymous credentials Digital credentials Policy languages
Content Type Text
Resource Type Article
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