Recently, the Industrial Internet of Things (IIoT) has become increasingly important for applications in the industry. IIoT has essentially become a prime security focus for implementing secure communication. Among the available cryptographic tools, identity-based signcryption provide a sound solution to fulfill the security requirement of IIoT. On the other hand a generalized proxy signcryption can work adaptively as proxy signature and proxy signcryption using a single algorithm. In order to accomplish effective and on-time communication whenever the manager of the company went out for a usual business trip or an IIoT device which has lack of resources, then it must need to delegate her/his signcryption rights to their subordinates (proxy agents/device). For this purpose, to make the delegation procedure more efficient and reliable, we proposed a lightweight identity-based generalized proxy signcryption (IBGPS) scheme for IIoT. The IBGPS scheme is provably secure in terms of indistinguishability against adaptive chosen ciphertext attack (IND − IBGPS − CCA) and existential unforgeable against a possible adaptive chosen message attack (EUF − IBGPS − CMA) under Hyperelliptic Curve Decisional Diffie-Hellman problem (HEDHP) and Hyperelliptic Curve Discrete Logarithm problem (HECDLP) in the random oracle model. Furthermore the performance evaluation in terms of computation and communication costs shows that the IBGPS scheme is more effective than the existing schemes.

最近，工业物联网（IIoT）对于行业中的应用已变得越来越重要。IIoT已实质上已成为实现安全通信的主要安全重点。在可用的加密工具中，基于身份的签密提供了满足IIoT安全要求的可靠解决方案。另一方面，广义的代理签密可以使用单个算法自适应地充当代理签章和代理签密。为了在公司经理出差或缺乏资源的IIoT设备出差时完成有效且按时的通信，则必须将其签名权委托给其下属（代理） /设备）。为此，为了使委派程序更加有效和可靠，我们为IIoT提出了一种基于身份的轻量级通用代理签密（IBGPS）方案。IBGPS方案在针对自适应选择密文攻击的不可区分性方面具有可证明的安全性（IND  -  IBGPS  -  CCA）和在随机预言模型下的超椭圆曲线决策Diffie-Hellman问题（HEDHP）和超椭圆曲线离散对数问题（HECDLP）下针对可能的自适应选择消息攻击（EUF  -  IBGPS  -  CMA）的存在不可伪造。此外，在计算和通信成本方面的性能评估表明，IBGPS方案比现有方案更有效。