Cyber-attacks are becoming more common against Internet users due to the increasing
dependency on online communication in their daily lives. X. 509 Public-Key Infrastructure …

Today, increasing Internet of Things devices are deployed, and the field of applications for
decentralized, self-organizing networks keeps growing. The growth also makes these …

Traditional identity management (IdM) systems rely on third-party identity providers (IdPs)
and are centralised, which can make them vulnerable to data breaches and other security …

Identity Management Systems (IdMs) have complemented how users are identified,
authenticated, and authorised on e-services. Among the methods used for this purpose are …

This paper explores the critical role of Public Key Infrastructure (PKI) in ensuring the security
of electronic transactions, particularly in validating the authenticity of websites in online …

Internet security heavily depends on Transport Layer Security (TLS) and X. 509 certificates.
A Certification Authority (CA) issues these certificates so users can safely connect to verified …

Protocol flaws such as the well-known Heartbleed bug, security and privacy issues or
incomplete specifications, in general, pose risks to the direct users of a protocol and further …

Certificates are integral to the security of today's Internet. Protocols like BlockVoke allow
secure, timely and efficient revocation of certificates that need to be invalidated. ACME, a …

The modern Internet is highly dependent on trust communicated via certificates. However, in
some cases, certificates become untrusted, and it is necessary to revoke them. In practice …

The existing ADSs do not support the append-only feature and fork consistency of
transparent logs. Therefore, it is very necessary and urgent to research new types of ADSs …