一种区块链的云计算电子取证模型

提出了一种区块链的云计算电子取证模型,设计基于Merkle Tree的证据保全及改进的共识算法,实现云计算环境下的去中心化电子取证,防止任何参与方,包括取证调查者、云服务提供商、用户等对取证信息的共谋篡改.实验结果表明,该模型能够有效地对电子证据信息进行保全和验证,保障取证数据的完整性和时效性.

Blockchain Model of Cloud Forensics

An electronic forensics model of cloud computing based on blockchain was proposed, in which, an evidence prevention scheme based on Merkle Tree and an improved consensus algorithm were designed to implement the decentralized electronic forensics under cloud computing environment. This model can prevent any involved party-forensic investigators, cloud service providers, users, etc.—from colluding to tamper with the digital evidence. Experiments show that the model can effectively preserve and verify the electronic evidence, and guarantee the integrity and timeliness of the data.