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

Fog-to-cloud computing has now become a new cutting-edge technique along with the rapid popularity of Internet Things (IoT). Unlike traditional cloud computing, fog-to-cloud needs more entities to participate in, including mobile sinks and fog nodes except for service provider (CSP). Hence, integrity auditing in storage will also be different from that storage. In recent work Tian et al., they took first step design public system computing. However, their scheme becomes very inefficient since uses intricate key cryptographic techniques, bilinear mapping, proof knowledge etc. this paper, we general efficient based on MAC HMAC, both which are popular private techniques. By implementing give concrete instantiation our system. Finally, theoretical analysis experiment results show proposed efficiency terms communication computational costs.