Internet of Things (IoT) and edge-enabled networking infrastructures have been used to provide data processing capabilities at the edge rather than transferring it to the concerned cloud in the smart cities. However, security and privacy of both data and device $C_i$ are among common issues associated with the edge-enabled IoT networking paradigm. Numerous edge-enabled mechanisms have been presented in literature to resolve these issues, but device-to-device authentication (preferably in multi-hop enabled networking) to resolve the black-hole issue is not addressed yet. In this paper, a mutual authentication scheme, a hybrid of Medium Access Control (MAC) address and EAODV-enabled scheme, for establishing secure device-to-device communication sessions in IoT networks is presented to make edge-enabled smart cities safe and secure. Every device $C_i$ is bounded to register its Mac address with the concerned base station or edge module $S_j$ in an off-line phase to prevent entry of the intruder device(s) in the operational edge-enabled IoT network. Moreover, the initiation of a proper communication session with both device $C_i$ and edge or base station $S_j$ is subjected to the authentication process. Only those devices $C_i$ are allowed to initiate a communication session which are already registered in the off-line phase where entry of the intruder node(s) at any stage is not possible. Apart from it, a well-known encryption and decryption mechanism is used to guarantee a secure communication session. Simulation results have verified that the proposed mutual authentication scheme performance is better than existing schemes specifically in terms of processing and communication overheads.

物联网（IoT）和支持边缘的网络基础架构已用于在边缘提供数据处理功能，而不是将其传输到智能城市中的相关云中。但是，数据和设备的安全性和隐私性$C_{\mathrm{一世}}$这些都是与启用边缘的IoT网络范例相关的常见问题。文献中已经提出了许多启用边缘的机制来解决这些问题，但是解决黑洞问题的设备到设备身份验证（最好是在启用多跳的网络中）尚未解决。在本文中，提出了一种相互认证方案，即媒体访问控制（MAC）地址和启用EAODV的方案的混合，用于在IoT网络中建立安全的设备到设备通信会话，以使启用边缘的智能城市更加安全。每个设备$C_{\mathrm{一世}}$ 势必会在相关基站或边缘模块上注册其Mac地址 ${\mathrm{小号}}_{Ĵ}$处于离线阶段，以防止入侵者设备进入可运行边缘的物联网网络。此外，启动与两个设备的正确通信会话$C_{\mathrm{一世}}$ 和边缘或基站 ${\mathrm{小号}}_{Ĵ}$进行身份验证过程。只有那些设备$C_{\mathrm{一世}}$被允许发起一个已经在离线阶段注册的通信会话，其中在任何阶段都不可能进入入侵者节点。除此之外，使用众所周知的加密和解密机制来保证安全的通信会话。仿真结果证明，在处理和通信开销方面，所提出的相互认证方案的性能优于现有方案。