Research Progress on Blockchain-based Cloud Storage Security Mechanism

Cloud storage allows users to obtain cheap online storage services on demand through network connections anytime, anywhere, but due to the untrustworthiness of cloud service providers, third-party organizations, and users, and inevitable malicious attacks, there are many cloud storage security vulnerabilities. The chain has the characteristics of decentralization, durability, anonymity and auditability, and has the potential to establish a trusted platform. Therefore, the research of cloud storage security mechanisms based on blockchain technology has become a research trend. According to this, first of all Summarize the security architecture of cloud storage system and the security of blockchain technology, and then conduct a literature review and comparative analysis from the four aspects of access control, integrity verification, data deduplication, and data traceability, and finally analyze the security of cloud storage based on blockchain. Carry out technical challenge analysis, and summarize the full te