计算机科学 ›› 2020, Vol. 47 ›› Issue (1): 315-320.doi: 10.11896/jsjkx.190100195
所属专题: 区块链技术
周万锴1,龙敏1,2
ZHOU Wan-kai1,LONG Min1,2
摘要: 随着物联网的飞速发展,环境监测系统极大地提高了政府日常运作的效率和透明度。但是,大多数现有的环境监测系统都是以集中的方式提供服务,并且严重依赖人工控制。高度集中的系统架构容易受到外部攻击;此外,不法分子破坏数据真实性相对容易,导致公众对环境监测数据的信任度不高。针对这些问题,文中首先提出一种基于区块链的环境监测数据传输方案,监测设备获取的数据经过签名发送至数据采集终端,数据采集终端验证数据后将其写入区块链,智能合约对公众关心的数据进行实时分析并对外发布结果;其次,提出一种基于分组的PBFT共识算法,以提高系统的可扩展性。文中对方案进行了分析,结果表明,环境监测区块链保障了环境监测数据的安全性、真实性、完整性;同时结合具体案例验证了该方案的可行性。
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