基于同态加密的可信云存储平台

基于全同态加密技术的数据检索方法可以直接对加密的数据进行检索，不但能保证被检索的数据不被统计分析，还能对被检索的数据做基本的加法和乘法运算而不改变对应明文的顺序，既保护了用户的数据安全，又提高了检索效率。文章就是针对上述问题提出的一个系统级解决方案，主要致力于解决云存储系统中信息的安全存储与管理问题。为实现此目标，该方案采用了同态加密算法，以及在这种算法基础上提出的一种密文检索算法，既保证了用户数据的安全性，又保证了服务器能够对存储的用户密文直接进行操作，实现了对密文的直接检索，平衡了云存储系统中保证用户数据的安全性和服务于云计算之间的关系。

A Credible Cloud Storage Platform based on Homomorphic Encryption

Data retrieval method based on homomorphic encryption techniques can be directly on the encrypted data retrieval,not only to ensure the data is not retrieved statistical analysis,to do basic addition and multiplication can be retrieved data without changing the corresponding plaintext the order both to protect the security of user data to improve the retrieval efficiency.This work is proposed to address the problem,a system-level solutions,to solve the problem of secure storage and management of information in the cloud storage system.To achieve this objective,the work uses a homomorphic encryption algorithm,this algorithm on the basis of a cipher text retrieval algorithms,both to ensure the security of user data,but also to ensure the server can store user-ciphertext direct operation,the ciphertext to retrieve the balance of the cloud storage system to ensure the security of user data and services,the relationship between cloud computing.