生命周期可控数据自动销毁方法仿真研究

Simulation Research on Automatic Destruction Method of Life Cycle Controllable Data

为了解决当前生命周期可控数据自动销毁时间开销较大、销毁率较低、销毁后数据恢复率较高的问题,提出了基于数据折叠算法的生命周期可控数据自动销毁方法,该方法在构建包括数据拥有者、计算机系统服务器、DHT网络和数据使用者数据自动销毁模型基础上,加密生命周期可控数据明文,采用随机抽样算法抽样数据加密密文,将抽样后不完整密文上传给服务器;同时利用信任值评估模型评估DHT网络中各个节点的信任值,并采用秘密共享算法处理数据加密密钥,并将各个子密钥分发给评估信任值较高的节点上,完成数据处理工作;在此基础上通过调用分布式文件系统接口将生命周期可控数据随机密文上传给服务器,采用数据折叠算法对处理后的生命周期可控数据进行可控次数自动销毁操作。仿真结果证明,提出方法能够实现生命周期可控数据自动销毁,且降低了时间开销,提高了销毁率,同时降低了销毁后数据的恢复率。

For the current life cycle controllable data, the automatic destruction time is large, the destruction rate is low, and the data recovery rate after destruction is high. Therefore, an automatic destruction method for life cycle controllable data based on data folding algorithm was proposed. Based on building the data automatic destruction model including data owner, computer system server, D H T network and data consumer, this method encrypted the life cycle controllable data plain text. Then, the random sampling algorithm was used to sample the data encrypted cipher-text. Moreover, the incomplete cipher-text was uploaded to the server. Meanwhile, the trust value evaluation model was used to evaluate the trust value of each node in D H T network, and the secret sharing algorithm was used to handle data encryption key. After that, each sub-key was distributed to the node with higher evaluation trust value, so as to complete the data processing. On this basis, the random cipher-text of life cycle controllable data was uploaded to the server by calling the distributed file system interface. Finally, the data folding algorithm was used to perform the automatic destruction with controllable number on the processed life cycle controllable data. Simulation results show that the proposed method can achieve the automatic destruction of life cycle controllable data and reduce the time overhead. Meanwhile, this method improves the destruction rate and reduces the recovery rate of data after destruction.