A Survey on Efficient Auditing Scheme for Secure Data Storage in Fog-to-Cloud Computing

With the rise of the Internet of Things, fog-to-cloud computing has emerged as a new cutting-edge approach (IoT). Except for the cloud service provider, fog-to-cloud computing necessitates the participation of additional entities, such as mobile sinks and fog nodes (CSP). As a result, fog-to-cloud storage integrity audits will differ from standard cloud storage auditing. Tian et al. has completed the first stage in developing a public auditing system for fog-to-cloud computing. However, because they employ complex public key cryptography techniques like bilinear mapping and proof of knowledge, their system becomes inefficient. We offer a more broad and efficient auditing system based on MAC and HMAC, two prominent private key cryptography algorithms in this study. By implementing MAC and HMAC, we give a real instantiation of our auditing system. Finally, theoretical analysis and actual findings show that our suggested system has lower communication and computing costs.