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Authors: Vijayakrishnan Pasupathinathan 1 ; Josef Pieprzyk 1 and Huaxiong Wang 2

Affiliations: 1 Macquarie University, Australia ; 2 Nanyang Technological University, Singapore

Keyword(s): Anonymity, Identification, Colligated pseudonyms, TPM.

Related Ontology Subjects/Areas/Topics: Cryptographic Techniques and Key Management ; Data and Systems Security ; Information and Systems Security ; Public Key Crypto Applications

Abstract: A pseudonym provides anonymity by protecting the identity of a legitimate user. A user with a pseudonym can interact with an unknown entity and be confident that his/her identity is secret even if the other entity is dishonest. In this work, we present a system that allows users to create pseudonyms from a trusted master public-secret key pair. The proposed system is based on the intractability of factoring and finding square roots of a quadratic residue modulo a composite number, where the composite number is a product of two large primes. Our proposal is different from previously published pseudonym systems, as in addition to standard notion of protecting privacy of an user, our system offers colligation between seemingly independent pseudonyms. This new property when combined with a trusted platform that stores a master secret key is extremely beneficial to an user as it offers a convenient way to generate a large number of pseudonyms using relatively small storage.

CC BY-NC-ND 4.0

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Paper citation in several formats:
Pasupathinathan, V.; Pieprzyk, J. and Wang, H. (2009). CERTIFIED PSEUDONYMS COLLIGATED WITH MASTER SECRET KEY. In Proceedings of the International Conference on Security and Cryptography (ICETE 2009) - SECRYPT; ISBN 978-989-674-005-4; ISSN 2184-3236, SciTePress, pages 190-197. DOI: 10.5220/0002226501900197

@conference{secrypt09,
author={Vijayakrishnan Pasupathinathan. and Josef Pieprzyk. and Huaxiong Wang.},
title={CERTIFIED PSEUDONYMS COLLIGATED WITH MASTER SECRET KEY},
booktitle={Proceedings of the International Conference on Security and Cryptography (ICETE 2009) - SECRYPT},
year={2009},
pages={190-197},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002226501900197},
isbn={978-989-674-005-4},
issn={2184-3236},
}

TY - CONF

JO - Proceedings of the International Conference on Security and Cryptography (ICETE 2009) - SECRYPT
TI - CERTIFIED PSEUDONYMS COLLIGATED WITH MASTER SECRET KEY
SN - 978-989-674-005-4
IS - 2184-3236
AU - Pasupathinathan, V.
AU - Pieprzyk, J.
AU - Wang, H.
PY - 2009
SP - 190
EP - 197
DO - 10.5220/0002226501900197
PB - SciTePress