Search Results (2)

The Internet of Drones (IoD) is a network for drones that utilizes the existing Internet of Things (IoT) infrastructure to facilitate mission fulfilment through real-time data transfer and navigation services. IoD deployments, on the other hand, are often conducted in public wireless settings, which raises serious security and privacy concerns. A key source of these security and privacy concerns is the fact that drones often connect with one another through an unprotected wireless channel. Second, limits on the central processing unit (CPU), sensor, storage, and battery capacity make the execution of complicated cryptographic methods onboard a drone impossible. Signcryption is a promising method for overcoming these computational and security limitations. Additionally, in an IoD setting, drones and the ground station (GS) may employ various cryptosystems in a particular region. In this article, we offer a heterogeneous signcryption scheme with a conditional privacy-preservation option. In the proposed scheme, identity-based cryptography (IBC) was used by drones, while the public key infrastructure (PKI) belonged to the GS. The proposed scheme was constructed by using the hyperelliptic curve cryptosystem (HECC), and its security robustness was evaluated using the random oracle model (ROM). In addition, the proposed scheme was compared to the relevant existing schemes in terms of computation and communication costs. The results indicated that the proposed scheme was both efficient and secure, thereby proving its feasibility. Full article

Since the roadside infrastructure and vehicles come from different manufacturers, vehicular ad hoc networks (VANETs) now are extremely heterogeneous. It is difficult to communicate securely for heterogeneous facilities in VANETs because secure communication needs to concurrently realize confidentiality, authentication, integrity, and non-repudiation. To meet the above security attributes in one logical step, four bi-directional signcryption schemes are proposed for specific heterogeneous vehicle to infrastructure (V2I) communication in this paper. The first scheme supports batch verification, which allows multiple vehicles registered in a public key infrastructure (PKI) system to transmit messages to a receiver in an identity-based cryptosystem (IBC), both which are the mainstream public key cryptosystems. The second scheme supports a sender in a PKI to securely broadcast a message to multiple vehicles in an IBC. The communication direction of the latter two schemes is opposite to the former two schemes (i.e., from IBC to PKI). All these schemes can be proved to satisfy confidentiality and unforgeability based on the assumptions of decisional and computational Diffie-Hellman problems in the random oracle model. Furthermore, numerical analyses and simulation results demonstrate the computation costs, communication costs, storage, and the aggregate ciphertext length of our schemes are better than the existing ones. Full article