Revisiting Privacy-aware Blockchain Public Key Infrastructure

Paul Plessing; Olamide Omolola

doi:10.5220/0008947104150423

Revisiting Privacy-aware Blockchain Public Key Infrastructure

Paul Plessing, Olamide Omolola

Institute of Applied Information Processing and Communications (7050)

Research output: Chapter in Book/Report/Conference proceeding › Conference paper

Abstract

Privacy-aware Blockchain Public Key Infrastructure (PB-PKI) is a recent proposal by Louise Axon (2017) to create a privacy-preserving Public Key Infrastructure on the Blockchain. However, PB-PKI suffers from operational problems. We found that the most important change, i.e., the key update process proposed in PB-PKI for privacy is broken. Other issues include authenticating a user during key update and ensuring proper key revocation. In this paper, we provide solutions to the problems of PB-PKI. We suggest generating fresh keys during key update. Furthermore, we use ring signatures for authenticating the user requesting key updates and use Asynchronous accumulators to handle the deletion of revoked keys. We show that the approach is feasible and implement a proof of concept.

Original language	English
Title of host publication	ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy
Editors	Steven Furnell, Paolo Mori, Edgar Weippl, Olivier Camp
Publisher	SciTePress - Science and Technology Publications
Pages	415-423
Number of pages	9
Volume	1
ISBN (Electronic)	9789897583995
ISBN (Print)	978-989-758-399-5
DOIs	https://doi.org/10.5220/0008947104150423
Publication status	Published - 1 Jan 2020
Event	6th International Conference on Information Systems Security and Privacy: ICISSP 2020 - Valletta, Malta Duration: 25 Feb 2020 → 27 Feb 2020

Publication series

Name	ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy

Conference

Conference	6th International Conference on Information Systems Security and Privacy
Abbreviated title	ICISSP 2020
Country/Territory	Malta
City	Valletta
Period	25/02/20 → 27/02/20

Keywords

Blockchain
Privacy
Public key infrastructure
RSA

ASJC Scopus subject areas

Information Systems
Safety, Risk, Reliability and Quality
Computer Networks and Communications
Computer Science Applications

Access to Document

10.5220/0008947104150423Licence: CC BY-NC-ND 4.0

https://eprint.iacr.org/2019/527

Cite this

Plessing, P., & Omolola, O. (2020). Revisiting Privacy-aware Blockchain Public Key Infrastructure. In S. Furnell, P. Mori, E. Weippl, & O. Camp (Eds.), ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy (Vol. 1, pp. 415-423). (ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy). SciTePress - Science and Technology Publications. https://doi.org/10.5220/0008947104150423

Revisiting Privacy-aware Blockchain Public Key Infrastructure. / Plessing, Paul; Omolola, Olamide.
ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy. ed. / Steven Furnell; Paolo Mori; Edgar Weippl; Olivier Camp. Vol. 1 SciTePress - Science and Technology Publications, 2020. p. 415-423 (ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy).

Research output: Chapter in Book/Report/Conference proceeding › Conference paper

Plessing, P & Omolola, O 2020, Revisiting Privacy-aware Blockchain Public Key Infrastructure. in S Furnell, P Mori, E Weippl & O Camp (eds), ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy. vol. 1, ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy, SciTePress - Science and Technology Publications, pp. 415-423, 6th International Conference on Information Systems Security and Privacy, Valletta, Malta, 25/02/20. https://doi.org/10.5220/0008947104150423

Plessing P, Omolola O. Revisiting Privacy-aware Blockchain Public Key Infrastructure. In Furnell S, Mori P, Weippl E, Camp O, editors, ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy. Vol. 1. SciTePress - Science and Technology Publications. 2020. p. 415-423. (ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy). doi: 10.5220/0008947104150423

Plessing, Paul ; Omolola, Olamide. / Revisiting Privacy-aware Blockchain Public Key Infrastructure. ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy. editor / Steven Furnell ; Paolo Mori ; Edgar Weippl ; Olivier Camp. Vol. 1 SciTePress - Science and Technology Publications, 2020. pp. 415-423 (ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy).

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abstract = "Privacy-aware Blockchain Public Key Infrastructure (PB-PKI) is a recent proposal by Louise Axon (2017) to create a privacy-preserving Public Key Infrastructure on the Blockchain. However, PB-PKI suffers from operational problems. We found that the most important change, i.e., the key update process proposed in PB-PKI for privacy is broken. Other issues include authenticating a user during key update and ensuring proper key revocation. In this paper, we provide solutions to the problems of PB-PKI. We suggest generating fresh keys during key update. Furthermore, we use ring signatures for authenticating the user requesting key updates and use Asynchronous accumulators to handle the deletion of revoked keys. We show that the approach is feasible and implement a proof of concept.",

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Revisiting Privacy-aware Blockchain Public Key Infrastructure

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

EU - LIGHTest - Lightweight Infrastructure for Global Heterogeneous Trust management in support of an open Ecosystem of Stakeholders and Trust schemes.

Cite this

Revisiting Privacy-aware Blockchain Public Key Infrastructure

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Projects

EU - LIGHTest - Lightweight Infrastructure for Global Heterogeneous Trust management in support of an open Ecosystem of Stakeholders and Trust schemes.

Cite this