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

Institut für Angewandte Informationsverarbeitung und Kommunikationstechnologie (7050)

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband

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.

Originalsprache	englisch
Titel	ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy
Redakteure/-innen	Steven Furnell, Paolo Mori, Edgar Weippl, Olivier Camp
Herausgeber (Verlag)	SciTePress - Science and Technology Publications
Seiten	415-423
Seitenumfang	9
Band	1
ISBN (elektronisch)	9789897583995
ISBN (Print)	978-989-758-399-5
DOIs	https://doi.org/10.5220/0008947104150423
Publikationsstatus	Veröffentlicht - 1 Jan. 2020
Veranstaltung	6th International Conference on Information Systems Security and Privacy: ICISSP 2020 - Valletta, Malta Dauer: 25 Feb. 2020 → 27 Feb. 2020

Publikationsreihe

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

Konferenz

Konferenz	6th International Conference on Information Systems Security and Privacy
Kurztitel	ICISSP 2020
Land/Gebiet	Malta
Ort	Valletta
Zeitraum	25/02/20 → 27/02/20

ASJC Scopus subject areas

Information systems
Sicherheit, Risiko, Zuverlässigkeit und Qualität
Computernetzwerke und -kommunikation
Angewandte Informatik

Zugriff auf Dokument

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

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

Andere Dateien und Links

http://www.scopus.com/inward/record.url?scp=85083030530&partnerID=8YFLogxK

EU - LIGHTest - Leichtgewichtige Infrastruktur für globales, heterogenes Vertrauens-Management, die ein offenes Ökosystem für verschiedene Akteure und Vertrauens-Modelle bietet
Lipp, P.
1/09/16 → 30/08/19
Projekt: Forschungsprojekt

Dieses zitieren

Plessing, P., & Omolola, O. (2020). Revisiting Privacy-aware Blockchain Public Key Infrastructure. in S. Furnell, P. Mori, E. Weippl, & O. Camp (Hrsg.), ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy (Band 1, S. 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. Hrsg. / Steven Furnell; Paolo Mori; Edgar Weippl; Olivier Camp. Band 1 SciTePress - Science and Technology Publications, 2020. S. 415-423 (ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy).

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband

Plessing, P & Omolola, O 2020, Revisiting Privacy-aware Blockchain Public Key Infrastructure. in S Furnell, P Mori, E Weippl & O Camp (Hrsg.), ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy. Bd. 1, ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy, SciTePress - Science and Technology Publications, S. 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, Hrsg., ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy. Band 1. SciTePress - Science and Technology Publications. 2020. S. 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. Hrsg. / Steven Furnell ; Paolo Mori ; Edgar Weippl ; Olivier Camp. Band 1 SciTePress - Science and Technology Publications, 2020. S. 415-423 (ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy).

@inproceedings{3e36f41a9b2245458279ada2deb86e30,

title = "Revisiting Privacy-aware Blockchain Public Key Infrastructure",

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.",

keywords = "Blockchain, Privacy, Public key infrastructure, RSA",

author = "Paul Plessing and Olamide Omolola",

year = "2020",

month = jan,

day = "1",

doi = "10.5220/0008947104150423",

language = "English",

isbn = "978-989-758-399-5",

volume = "1",

series = "ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy",

publisher = "SciTePress - Science and Technology Publications",

pages = "415--423",

editor = "Steven Furnell and Paolo Mori and Edgar Weippl and Olivier Camp",

booktitle = "ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy",

note = "6th International Conference on Information Systems Security and Privacy : ICISSP 2020, ICISSP 2020 ; Conference date: 25-02-2020 Through 27-02-2020",

}

TY - GEN

T1 - Revisiting Privacy-aware Blockchain Public Key Infrastructure

AU - Plessing, Paul

AU - Omolola, Olamide

PY - 2020/1/1

Y1 - 2020/1/1

N2 - 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.

AB - 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.

KW - Blockchain

KW - Privacy

KW - Public key infrastructure

KW - RSA

UR - http://www.scopus.com/inward/record.url?scp=85083030530&partnerID=8YFLogxK

U2 - 10.5220/0008947104150423

DO - 10.5220/0008947104150423

M3 - Conference paper

SN - 978-989-758-399-5

VL - 1

T3 - ICISSP 2020 - Proceedings of the 6th International Conference on Information Systems Security and Privacy

SP - 415

EP - 423

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

A2 - Furnell, Steven

A2 - Mori, Paolo

A2 - Weippl, Edgar

A2 - Camp, Olivier

PB - SciTePress - Science and Technology Publications

T2 - 6th International Conference on Information Systems Security and Privacy

Y2 - 25 February 2020 through 27 February 2020

ER -

Revisiting Privacy-aware Blockchain Public Key Infrastructure

Abstract

Publikationsreihe

Konferenz

ASJC Scopus subject areas

Zugriff auf Dokument

Andere Dateien und Links

Fingerprint

Projekte

EU - LIGHTest - Leichtgewichtige Infrastruktur für globales, heterogenes Vertrauens-Management, die ein offenes Ökosystem für verschiedene Akteure und Vertrauens-Modelle bietet

Dieses zitieren