基于秘密分割的区块链安全数据共享模型

Blockchain secure data sharing model based on secret sharing

在数据共享应用下,针对区块链因分布式共享和全网数据同步特点引发数据存储安全和数据负载过重的问题,提出基于秘密分割的区块链安全数据共享模型(secret sharing data sharing model,SSDSM),该模型将全网节点随机分组,通过秘密分割算法对共享数据分块并保存在不同的节点组,在保证任意单个节点不能获取共享数据信息的前提下,降低了单个节点数据冗余量。实验表明,随着秘密分割门限值的增加,SSDSM的数据分割时间开销和单个节点数据冗余量明显降低,数据恢复的时间开销维持在低水平内。与其他数据共享方案相比,兼具安全性和低数据负载的SSDSM更加适合数据共享环境。

Under the data sharing application,in view of the problem of data storage security and data overload caused by the distributed sharing and network-wide data synchronization characteristics of the blockchain,secret sharing data sharing model(SSDSM)based on the blockchain security data sharing model based on secret segmentation is proposed.The model randomly groups nodes in the whole network,and the shared data is chunked and saved in different node groups by the secret sharing algorithm,reducing data redundancy of a single node under the premise of ensuring that any single node cannot obtain the shared data.Experiments show that with the increase of the threshold,the partition time cost of SSDSM and data redundancy of a single node are significantly reduced,and the time cost of data recovery is maintained at a low level.SSDSM,which combines security and low data load,is more suitable for a data sharing environment than other data sharing scenarios.