Security Data Auditing based on Multifunction Digital Watermark for Multimedia File in Cloud Storage
Yongjun Ren, Jian Shen, Jin Wang, Jiang Xu, Liming Fang · International Journal of Multimedia and Ubiquitous Engineering · 2014
Cloud computing is a promising computing model that enables convenient and on-demand network access to a shared pool of configurable computing resources.In cloud computing, data owners host their data on cloud servers and data consumers can access the data from cloud servers.This new paradigm of data storage service also introduces new security challenges, because data owners and data servers have different identities and different business interests.Therefore, an independent auditing service is required to make sure that the data is correctly hosted in the Cloud.However, the existing solutions are not specific to the multimedia data.Moreover copyright protection is not provided.In this paper, we define specially a provable data possession model for multimedia file, and present a framework based on digital watermarking for multimedia data storages audit service, in which we analyze the security features of audit service for multimedia data outsourcing and the corresponding properties of digital watermarking.Moreover as an example, we present a provable data possession scheme based on double function self-embedded digital watermark, which integrate image content audit service and copyright protection.