基于ECC-ZKP的农产品供应链可控身份管理与认证模型

基于区块链的农产品供应链中，当参与主体数量规模越来越大时，节点与企业之间的1：1匹配关系将造成节点数量众多，从而造成网络开销大、共识效率低等问题。针对这些问题，引入中间件使得节点与企业之间1：1关系变为1：n的关系，对所涉及到的企业身份管理以及相互之间的认证，提出一种基于ECC-ZKP（elliptic curve cryptosystem-zero—knowledge proof）的可控身份管理与认证模型，实现身份的可控管理和完成可信交易前所需要的身份认证。通过模型分析和仿真实验分析结果表明，该模型能够提供较高的安全性，能够有效进行身份的管理和认证，且节点与企业之间1：n关系相比较于1：1关系减少了网络开销并提高了共识效率。

Controllable identity management and authentication model for ECC-ZKP-based agricultural products supply chain

In the agricultural supply chain based on block chain, when the number of participants becomes larger and larger, the 1: 1 matching relationship between nodes and enterprises will cause a large number of nodes, resulting in high network overhead and low consensus efficiency. In response to these problems, this paper introduced a middleware to change the 1: 1 relationship between nodes and enterprises into a 1: n relationship. For the enterprise identity management and mutual authentication, this paper proposed a controllable identity management and authentication model based on ECC-ZKP(elliptic curve cryptosystem-zero-knowledge proof) to realize controllable identity management and identity authentication before completing trusted transactions. Through model analysis and simulation experiments show that the model can provide high security, can effectively carry out identity management and certification, and compared with 1: 1 relationship, the 1: n relationship between nodes and enterprises reduces network overhead and improves consensus efficiency.