Electronic contract signing requires the design of protocols that guarantee that the exchange
is fair. In the past 5 years, we have observed that trusted third parties (TTPs) can be replaced …

In this article, we present the first proposal for contract signing based on blockchain that
meets the requirements of fairness, hard-timeliness, and bc-optimism. The proposal, thanks …

We indicate two problems with the specifications of fairness that are currently used for the
verification of non-repudiation and other fair-exchange protocols. The first of these problems …

We give an explicit, general construction for optimistic multi-party contract signing protocols.
Our construction converts a sequence over any finite set of signers into a protocol …

This paper presents an efficiency study of fair exchange protocols for Multi-Party Contract
Signing (MPCS) from their architecture point of view, an approach that has not been …

In certified email (CEM) protocols, trusted third party (TTP) transparency is an important
security requirement which helps to avoid bad publicity as well as protecting individual …

A multi-party contract signing (MPCS) protocol is used for a group of signers to sign a digital
contract over a network. We analyse the protocols of Mauw, Radomirović and Torabi Dashti …

Research in security has traditionally focused on preventing all possible attacks, without
focusing on the attacker and defender, and their incentives, abilities, and knowledge …

In certified email (CEM) protocols, TTP transparency is an important security requirement
which helps to avoid bad publicity as well as protecting individual usersʼ privacy. Recently …

In this thesis we initiates the analysis of twin specific or particular or especially security
threats (means of declaration of an intention or a determination to inflict harm on another) on …