摘要： 提出一种去中心化的安全分布式存储系统。通过公钥加密和单钥加密相结合的方法，提高存储数据的保密性。对每个数据源使用不同的对称密钥进行分布式加密，采用分布式纠删码对加密后的数据进行编码。使用RS多项式编码和List Decoding译码方法存储加密的对称密钥，以保证系统的鲁棒性。分析结果表明，该方案的计算复杂度较低。

关键词: 分布式存储, 分布式纠删码, 去中心化存储, 加密

Abstract: This paper proposes the decentralized secure distributed storage system. The privacy of data is fulfilled by the combination of public key system and symmetric key system. Symmetric key for data from different sources are different, hence encryptions can be implemented in a distributed way. The employment of decentralized erasure code, together with the distributed encryptions, makes possible the decentralization of the system. RS codes are used to store the encryption of symmetric keys, and the list decoding of RS codes ensures the robust. Analysis result shows that the computing efficiency of this system is higher.

Key words: distributed storage, distributed erasure code, decentralized storage, encryption

中图分类号: 

• TP309.2