A Decentralized Dynamic PKI based on Blockchain

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding


title = "A Decentralized Dynamic PKI based on Blockchain",
abstract = "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.",
author = "Mohsen Toorani and Christian Gehrmann",
year = "2021",
month = mar,
day = "22",
doi = "10.1145/3412841.3442038",
language = "English",
booktitle = "Proceedings of the 36th ACM/SIGAPP Symposium On Applied Computing (SAC'21)",
publisher = "Association for Computing Machinery (ACM)",
address = "United States",
note = "The 36th ACM/SIGAPP Symposium on Applied Computing, SAC '21 ; Conference date: 22-03-2021 Through 26-03-2021",