基于区块链的用能数据完整性保护框架

终端设备的分布式拓扑结构和节点有限的计算资源给区块链和用能信息采集系统集成带来很大阻碍,为此,提出基于区块链的多层互连数据保护框架(HBDF),用于能源互联网下的用能数据安全采集.HBDF以分散方式对终端设备进行身份认证来克服单点故障问题以及提高系统的可扩展性.利用基于截断式哈希消息认证码(HMAC)的承诺方案构建轻量级数据完整性验证方案,该方案利用反向哈希链表对验证密钥进行更新来减轻受限节点的计算负担.对框架安全性的分析表明,其可对通信实体和内容进行有效认证.实验验证了该框架的可行性.

Integrity protection framework for energy consumption data based on blockchain

The distributed topological structure of terminal equipment and limited computational resource of nodes bring major obstacle to the integration of blockchain and energy consumption information collection system, for which, the HBDF(Hierarchical Blockchain Data Framework) is proposed for energy consumption data security collection under energy internet. The HBDF adopts a distributed mode to authenticate the terminal equipment to overcome the single-point failure and improve the scalability of system. A lightweight data integrity verification scheme is constructed by a commitment scheme based on truncated HMAC(Hash Message Authentication Code),which uses reverse hash linked list to update the verification key to reduce the computational burden of restricted nodes. The analysis of framework security shows that it can effectively authenticate the communication contents and entities. The experiment verifies the effectiveness of the framework.