Non-Interactive Dealer-Free Dynamic Threshold Secret Sharing Based on Standard Shamir’s SS for 5G Networks

Abstract

Wireless group communications and mobile computing have demonstrated its potential capacity in the next generation of mobile communication networks and wireless systems (5G), where devices have the particularity of being heterogeneous and so have different capabilities in terms of storage, computing, communication and energy. Conventional protocols are not suitable for 5G networks since this environment needs more flexible and simple protocols for secure group communications. Hence, how to realize the dynamical security is a big challenge for 5G networks. In data security management, the longer the system runs, the greater the attacker's capabilities become. A threshold changeable secret sharing scheme (TCSS) in which shares of a (t, n) SS generated by the dealer initially can be used to reconstruct the secret but having a larger threshold j, (i.e., t < j ≤ n), is a secure way to protect the secret for a longer period of time. A straightforward approach to design a non-interactive dealer-free TCSS is to let the dealer follow Shamir's SS to generate multiple shares for different thresholds, i, for i = t, t + 1, • • • , n. Using this approach, each shareholder needs to store n − t + 1 shares. In this article, we propose a non-interactive dealer-free TCSS in which each shareholder only needs to store n−1 t shares. Our proposed TCSS can support standard Shamir's (t, n) SS. Our technique can thus be applied to existing Shamir schemes even if they were set up without consideration to future threshold increases. It is unconditionally secure and simpler than most of the existing schemes.

Practical KGC-Free Polynomial-Based Multiple Group Keys Agreement for IoT Health Care Systems

“…Secret sharing (SS) is computational complexity based on polynomials and unconditional security. Due to its special advantage, it becomes a very popular tool to design group key establishment protocols and then many types of SS are proposed, such as dynamic threshold SS [14]. A linear secret sharing scheme is designed by Hsu et al [15] using Vandermonde Matrix to effectively generate the group key.…”

Método de auditor a informática basado en sistemas de procesamiento avanzado de datos que permita minimizar el riesgo de calidad de los resultados

“…El modelo COBIT (Control Objectives for In-formation and related Technology) es el marco internacional de buenas prácticas para controlar la información de TI y los peligros que conlleva. COBIT se utiliza para llevar a cabo el régimen de TI y mejorar sus controles (Hsu et al, 2020). Así mismo, tiene fines de control, directrices de aseguramiento, mediciones de funcionamiento y resultados, componentes críticos de triunfo y modelos de madurez (Gebremichael et al, 2020).…”