A survey on cryptographic security and information hiding technology for cloud or fog-based IoT system

Internet of Things (IoT) is an emerging paradigm involving intelligent sensor networks that incorporates embedded technology for collecting data, communicating with external environments. Recently, cloud computing together with fog computing has become an important research area of the Internet of Things because of big data processing capabilities. It is a promising technology that utilizes cloud or fog computing / architecture to improve sensor computing, storage, and communication capabilities. However, recently it has been shown that this computing/architecture may be vulnerable to various attacks because of the openness nature of the wireless network. Therefore, it becomes more and more important to ensure the security and privacy in these scenes. Encryption security and information hiding technology can provide authentication, confidentiality, integrity, anti-eavesdropping, availability and so on for these computing models or architectures. The purpose of this review is to look for original articles with novel ideas and solutions to address encryption security and information hiding technologies in cloud or fog-based Internet of Things systems. We hope this review will provide an opportunity for scientists, researchers and industry engineers to study original manuscripts and know developments in all aspects of security, privacy, trust, and covert communication issues in cloud or fog computing/architecture Internet of Things systems.