摘要
为解决攻击者对动态数据的篡改、伪造等潜在安全问题,提出了一种基于区块链技术的动态数据安全存储方案。首先,给出了动态数据存储安全问题的数学模型;其次,分析了共识终端最大化自身收益的局部行为与保障动态数据存储系统安全性和有效性整体目标的一致性;再次,设计了适用于动态数据存储安全的共识机制、实例系统所有权状态转移函数和动态数据存储体系结构;最后,分析了系统随机状态模型下动态数据存储区块链的质量特性和生长特性。分析结果表明,在核准加入方式下,该方案能够有效杜绝攻击者对"动态数据账本"的非授权改动,有效地提高了动态数据的可信度。
In order to solve the potential security problems such as tampering and forgery of dynamic data,this paper proposed a secure storage scheme of dynamic data based on blockchain.First,the mathematical model for the problems above was established.Then,the consistency between local behavior of consensus terminals maximizing their own benefits and the overall goals to ensure the system security and effectiveness was analyzed.Furthermore,the consensus mechanism which is suitable for secure storage of dynamic data,the ownership state transition function of instance system and the architecture for the dynamic data storage system were designed.Finally,quality and growth characteristics of the dynamic data storage blockchain were analyzed under stochastic state model.Results show that the scheme can preclude unauthorized changes of＂dynamic data book＂effectively,thus enhancing the credibility of the dynamic data of instance system.
出处
《计算机科学》
CSCD
北大核心
2018年第2期57-62,共6页
Computer Science
基金
国家重点研发计划课题(2016YFB0800203)
国家自然科学基金(U1504602)
河南省科技攻关计划项目(172102210091)
河南省知识产权局软科学研究项目(20170106023)
河南省高校科技创新团队支持计划项目(17IRTSTHN009)资助
关键词
共识机制
区块链
动态数据
存储安全
Consensus mechanism
Blockchain
Dynamic data
Secure storage
