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Authors: Martin Schanzenbach ; Thomas Kilian ; Julian Schütte and Christian Banse

Affiliation: Fraunhofer AISEC, Parkring 4, Garching near Munich and Germany

ISBN: 978-989-758-378-0

Keyword(s): Zero-Knowledge, Attribute-based Credentials, Privacy, Identity and Access Management.

Related Ontology Subjects/Areas/Topics: Data and Application Security and Privacy ; Data Protection ; Identification, Authentication and Non-Repudiation ; Identity Management ; Information and Systems Security ; Peer-To-Peer Security ; Privacy ; Privacy Enhancing Technologies ; Security and Privacy in Web Services ; Security in Distributed Systems

Abstract: In this paper we present ZKlaims: a system that allows users to present attribute-based credentials in a privacy-preserving way. We achieve a zero-knowledge property on the basis of Succinct Non-interactive Arguments of Knowledge (SNARKs). ZKlaims allow users to prove statements on credentials issued by trusted third parties. The credential contents are never revealed to the verifier as part of the proving process. Further, ZKlaims can be presented non-interactively, mitigating the need for interactive proofs between the user and the verifier. This allows ZKlaims to be exchanged via fully decentralized services and storages such as traditional peer-to-peer networks based on distributed hash tables (DHTs) or even blockchains. To show this, we include a performance evaluation of ZKlaims and show how it can be integrated in decentralized identity provider services.

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Paper citation in several formats:
Schanzenbach, M.; Kilian, T.; Schütte, J. and Banse, C. (2019). ZKlaims: Privacy-preserving Attribute-based Credentials using Non-interactive Zero-knowledge Techniques.In Proceedings of the 16th International Joint Conference on e-Business and Telecommunications - Volume 2: SECRYPT, ISBN 978-989-758-378-0, pages 325-332. DOI: 10.5220/0007772903250332

@conference{secrypt19,
author={Martin Schanzenbach. and Thomas Kilian. and Julian Schütte. and Christian Banse.},
title={ZKlaims: Privacy-preserving Attribute-based Credentials using Non-interactive Zero-knowledge Techniques},
booktitle={Proceedings of the 16th International Joint Conference on e-Business and Telecommunications - Volume 2: SECRYPT,},
year={2019},
pages={325-332},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007772903250332},
isbn={978-989-758-378-0},
}

TY - CONF

JO - Proceedings of the 16th International Joint Conference on e-Business and Telecommunications - Volume 2: SECRYPT,
TI - ZKlaims: Privacy-preserving Attribute-based Credentials using Non-interactive Zero-knowledge Techniques
SN - 978-989-758-378-0
AU - Schanzenbach, M.
AU - Kilian, T.
AU - Schütte, J.
AU - Banse, C.
PY - 2019
SP - 325
EP - 332
DO - 10.5220/0007772903250332

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