Privacy-Preserving Broker-ABE Scheme for Multiple Cloud-Assisted Cyber Physical Systems

Abstract

Cloud-assisted cyber-physical systems (CCPSs) integrate the physical space with cloud computing. To do so, sensors on the field collect real-life data and forward it to clouds for further data analysis and decision-making. Since multiple services may be accessed at the same time, sensor data should be forwarded to different cloud service providers (CSPs). In this scenario, attribute-based encryption (ABE) is an appropriate technique for securing data communication between sensors and clouds. Each cloud has its own attributes and a broker can determine which cloud is authorized to access data by the requirements set at the time of encryption. In this paper, we propose a privacy-preserving broker-ABE scheme for multiple CCPSs (MCCPS). The ABE separates the policy embedding job from the ABE task. To ease the computational burden of the sensors, this scheme leaves the policy embedding task to the broker, which is generally more powerful than the sensors. Moreover, the proposed scheme provides a way for CSPs to protect data privacy from outside coercion.

Cyberattacks and Security of Cloud Computing: A Complete Guideline

“…To grant or limit permissions to their AB peers and provide them with access to anonymized data Long-term privacy-preserving computations for encrypted data and is secure even after a device-key is compromised [115] Revocation keys Cloud server authorization Privacy-preserving broker-ABE scheme for multiple CCPSs Reduce computational burden, policy embedding task to the broker, and protect data privacy [116] Security model as a service Tenancy and flexibility -To protect cloud infrastructure and provide flexibility to tenants to have additional security functionalities…”

“…The information that defines the aspects is kept secret and utilizes multidimensional bilinear groups to build multifaceted spaces. A chameleon hash function can also be used to persuade both true and false messages [113][114][115].…”

Security and Privacy Techniques in IoT Environment

“…The fourth paper [4] proposes a privacy-preserving broker-Attribute-Based Encryption (ABE) for IoT-and makes the IoT gateway the broker. In general, the broker is more powerful than other devices.…”