This paper proposes an encoder-decoder network to disentangle shape features during 3D
face shape reconstruction from single 2D images, such that the tasks of learning …

Nonrepudiation is a security service that plays an important role in many Internet
applications. Traditional two-party nonrepudiation has been studied intensively in the …

Recently several proposals of blockchain-based solutions for traditional e-commerce
applications have been presented, taking advantage of the fact that blockchain is a …

European Regulation (EU) 910/2014 lays down the rules for electronic identification and
trust services for electronic transactions. Qualified Electronic Registered Delivery is one of …

In this paper we consider the optimistic approach of the non-repudiation protocols. We study
a non-repudiation protocol with off-line trusted third party and we keep on with the definition …

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 …

A non-repudiation protocol enables the fair exchange of an electronic message and an
irrefutable digital receipt between two mistrusting parties over the Internet. That is, at the end …

Security of information has become of increasing importance in today's information society.
Sensitive information such as credit card numbers is sent over the Internet every day …

Blockchain can be the base for an evolution in several digital services. Fair Certified
Notification is one of these and requires a fair exchange of values: a message and a non …

Research oriented non-repudiation protocols have been active since the beginning of this
millennium. It is time to take a step forward and realize that in many applications there are …