A Decentralized Dynamic PKI based on Blockchain

Mohsen Toorani, Christian Gehrmann

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceedingPeer review

201 Nedladdningar (Pure)


The central role of the certificate authority (CA) in traditional public key infrastructure (PKI) makes it fragile and prone to compromises and operational failures. Maintaining CAs and revocation lists is demanding especially in loosely-connected and large systems. Log-based PKIs have been proposed as a remedy but they do not solve the problem effectively. We provide a general model and a solution for decentralized and dynamic PKI based on a blockchain and web of trust model where the traditional CA and digital certificates are removed and instead, everything is registered on the blockchain. Registration, revocation, and update of public keys are based on a consensus mechanism between a certain number of entities that are already part of the system. Any node which is part of the system can be an auditor and initiate the revocation procedure once it finds out malicious activities. Revocation lists are no longer required as any node can efficiently verify the public keys through witnesses.
Titel på värdpublikationProceedings of the 36th ACM/SIGAPP Symposium On Applied Computing (SAC'21)
FörlagAssociation for Computing Machinery (ACM)
Antal sidor10
ISBN (elektroniskt)978-1-4503-8104-8
StatusPublished - 2021
EvenemangThe 36th ACM/SIGAPP Symposium on Applied Computing, SAC '21 - Virtual Event, Sydkorea, Republiken Korea
Varaktighet: 2021 mars 222021 mars 26


KonferensThe 36th ACM/SIGAPP Symposium on Applied Computing, SAC '21
Land/TerritoriumSydkorea, Republiken Korea
OrtVirtual Event

Ämnesklassifikation (UKÄ)

  • Systemvetenskap, informationssystem och informatik


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