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  1. Proceedings of the 2005 workshop on Digital identity management (DIM '05)
  2. Establishing and protecting digital identity in federation systems
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Pseudonym management using mediated identity-based cryptography
Privacy and identity management for everyone
Cryptographic alias e-mail addresses for privacy enforcement in business outsourcing
Federated identity management for protecting users from ID theft
Establishing and protecting digital identity in federation systems
Managing privacy preferences for federated identity management
Authentication using multiple communication channels
Privacy enhancing identity management: protection against re-identification and profiling
DECIDE: a scheme for decentralized identity escrow
An authentication method for interaction between personal servers based on the exchange of addresses
A delegation framework for federated identity management
Usable presentation of secure pseudonyms
Access control management in a distributed environment supporting dynamic collaboration

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Notes

Establishing and protecting digital identity in federation systems

Content Provider ACM Digital Library
Author Bertino, Elisa Bhargav-Spantzel, Abhilasha Squicciarini, Anna C.
Abstract We develop solutions for the security and privacy of user identity information in a federation. By federation we mean a group of organizations or service providers which have built trust among each other and enable sharing of user identity information amongst themselves. We first propose a flexible approach to establish a single sign-on (SSO) ID in the federation. Then we show how a user can leverage this SSO ID to establish certified and un-certified user identity attributes without the dependence on PKI for user authentication. This makes the process more usable and privacy preserving. Our major contribution in this paper is a novel solution for protection against identity theft of these identity attributes. We provide protocols based on cryptographic techniques, namely zero knowledge proofs and distributed hash tables. We show how we can preserve privacy of the user identity without jeopardizing security. We formally prove correctness and provide complexity results for our protocols. The complexity results show that our approach is efficient. In the paper we also show that the protocol is robust enough even in case semi-trusted "honest-yet curious" service providers thus preventing against insider threat. In our analysis we give the desired properties of the cryptographic tools used and identify open problems. We believe that the approach represents a precursor to new and innovative cryptographic techniques which can provide solutions for the security and privacy problems in federated identity management.
Starting Page 11
Ending Page 19
Page Count 9
File Format PDF
ISBN 1595932321
DOI 10.1145/1102486.1102489
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2005-11-11
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Single sign-on Identity theft Federation Zero knowledge proof Identity management
Content Type Text
Resource Type Article
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