Abstract Electronic Commodity Trading has a pivotal role in our economic activities. In the
literature, there is a classic problem called “Fair Exchange” which is fundamental to …

Reputation systems have been popular in estimating the trustworthiness and predicting the
future behavior of nodes in a large-scale distributed system where nodes may transact with …

On-line commercial transactions involve an inherent mistrust between participant parties
since, sometimes, no previous relation exists between them. Such mistrust may be a …

In many applications, wireless ad-hoc networks are formed by devices belonging to
independent users. Therefore, a challenging problem is how to provide incentives to …

Applications such as e-commerce payment protocols, electronic contract signing, and
certified e-mail delivery require that fair exchange be assured. A fair-exchange protocol …

It has been well documented that lack of trust between commercial entities and purchasers
can restrict the potential of e-commerce. This may be because the purchaser is required to …

Blockchain's benefits and advantages have been extensively studied in literature, but far
fewer works can be found on the dishonest uses of them. In this paper, we present the first …

Fair exchange stems from a daily life problem: how can two people exchange objects
(material or immaterial) fairly, that is, without anyone being hurt in the exchange? More …

In the financial services industry, many people assume blockchain to have significant
impacts. From research and practice, we observe two main paradigms of how organizations …

This paper presents hierarchical key establishment scheme (HIKES) for wireless sensor
networks. In this scheme, the base station, acting as the central trust authority, empowers …