关键词: 分组密码, 工作模式, 并行计算, MapReduce, 云计算

Abstract: In the cloud computing, the security of massive data is paid more and more attention. And the block cipher algorithm is an effective means to ensure that the massive data are secure. But the efficiency is a significant problem for the massive amount of data. This paper presents a parallel block cipher mechanism based on the MapReduce architecture that enables a standard block cipher algorithm to be applied to a large-scale cluster environment. Then this paper improves the implementation efficiency of the massive data encryption and decryption by parallelization, and designs several common parallel working modes. Finally, the experiments show that the proposed algorithm has good scalability and efficient performance. So it can not only be adapted to the security of massive data in the cloud computing environment, but also lay the foundation for further research work.

Key words: block cipher, mode of operation, parallel computing, MapReduce, cloud computing