As one of the most important and famous applications of blockchain technology,
cryptocurrency has attracted extensive attention recently. Empowered by blockchain …

Cryptography, in particular public-key cryptography, has emerged in the last 20 years as an
important discipline that is not only the subject of an enormous amount of research, but …

A credential system is a system in which users can obtain credentials from organizations
and demonstrate possession of these credentials. Such a system is anonymous when …

Thanks to their anonymity (pseudonymity) and elimination of trusted intermediaries,
cryptocurrencies such as Bitcoin have created or stimulated growth in many businesses and …

A secret sharing scheme allows to share a secret among sev-eral participants such that only
certain groups of them can recover it. Verifiable secret sharing has been proposed to …

This paper presents efficient off-line anonymous e-cash schemes where a user can
withdraw a wallet containing 2 ℓ coins each of which she can spend unlinkably. Our first …

Traditionally, cryptography and its applications are defensive in nature, and provide privacy,
authentication, and security to users. In this paper we present the idea of Cryptovirology …

As we move into a new decade, the global world of Intelligent Infrastructure (II) services
integrated into the Internet of Things (IoT) are at the forefront of technological advancements …

We present new results on a distributable change-detection method inspired by the natural
immune system. A weakness in the original algorithm was the exponential cost of generating …

Anonymity of the participants is an important requirement for some applications in electronic
commerce, in particular for payment systems. Because anonymity could be in conflict with …