Purpose Technological development has been a cornerstone of any emerging economy in
the past few years. Blockchain has emerged as a promising technology in the past few …

Electronically signing contracts is fundamental for e-commerce transactions. The main
property that contract signing protocols must achieve is fairness of the exchange. The …

A fair contract signing scheme ensures that contract signing participants can fairly exchange
the digital signatures of the contract, which has a wide range of applications on the Internet …

The emergence of electric vehicles promotes the development of Internet of Vehicle (IoV).
However, there are a series of security problems to be solved in the IoV. Firstly, how to allow …

With the advancement of information technology, electronic contracts are gradually
replacing paper contracts. Blockchain can serve as a decentralized trusted third party to help …

In this paper, a delegate contract signing solution is proposed to eliminate the potential risk
of contract fraud caused by information and interest asymmetry. By utilizing the functional …

Fair digital signature of contracts and agreements is an essential process in any electronic
commerce scenario, and therefore also in data marketplaces, where the relationships and …

The certified mail is a value-added service that is widely used in the paper world. However,
the scientific community has not yet provided a solution for certified e-mail that has achieved …

In this article, we present the first solution for multi-party certified email that achieves fairness
and confidentiality without the intervention of a TTP but with blockchain support when …

In this paper, we present two proposals for multi-two-party contract signing with blockchain
support. In the scenario in this paper, a customer wants to purchase products/services from …