关键词: 云计算, 用户数据, 隐私保护, 隐式机制, 数据存储方案

Abstract: In recent years, cloud computing has gradually become a mainstream form of technology for information sharing. However, while providing people with convenient information storage and sharing services, cloud computing is also facing severe user data security issues. Hundreds of information security incidents have threatened global network information security in the years since cloud computing began. Information confidentiality is an essential element of information security, and privacy protection of user data is an important part of information security technology. Cloud computing also faces user data privacy protection issues. In the cloud computing, user data is stored in the cloud, and the computing process is carried out in the cloud, so higher requirements are placed on user data privacy protection. This paper mainly discusses the privacy protection of user data in storage and cloud. It mainly studies key technologies such as access control and ciphertext search for user privacy protection, which can protect user data privacy from being stolen and reduce significantly under small performance loss. Local calculations.

Key words: Cloud computing, user data, privacy protection, access control, ciphertext search