Information sharing among collaborating organizations usually occurs in broad, highly dynamic network-based environments, and formally accessing the resources in a secure manner poses a dificult challenge. The mechanisms must be provided to protect the resources from adversaries. The proposed delegation framework addresses the issue of how to advocate selective information sharing among collabo...

Digital Government and Mobile Government are chiefly an issue of receiving public sector Information Technology schemes adapt to interoperability with citizen’s digital government devices furthermore mobile devices. Enhanced interoperability involving public and private organizations is of key value to formulate digital government newfangled victorious. Incidentally, expanding a sound digital g...

In recent years quantum entanglement [1] has found many exciting applications which have considerable bearing on the emerging fields of quantum information [2] and quantum computing [3]. Two such key applications are quantum teleportation [4] and quantum secret sharing [9]. Quantum teleportation involves secure transfer of an unknown qubit from one place to another and in quantum secret sharing...

Verifiable secret sharing schemes (VSS) are secret sharing schemes dealing with possible cheating by the participants. In this paper, we propose a new unconditionally secure VSS. Then we construct a new proactive secret sharing scheme based on that VSS. In a proactive scheme, the shares are periodically renewed so that an adversary cannot get any information about the secret unless he is able t...

Healthcare is characterized by close collaboration and information sharing among many distinct actors, who co-operate for the patient care in different temporal moments, also at a distance. In this context, availability to care givers of all relevant patient health data and of specific healthcare co-operative work supporting tools is fundamental for best patient treatment. We designed and imple...

Verifiable Secret-Sharing (VSS) is a fundamental primitive in secure distributed computing. It used as building block several computing tasks, such Byzantine agreement and multi-party computation. In this article, we consider VSS schemes with perfect security, tolerating computationally unbounded adversaries. We comprehensively survey the existing perfectly three different communication setting...