Wide-spread use of wireless sensor networks (WSNs) that are consisted of resource-constrained sensor nodes in communication with gateways in sensitive and mission-critical industries have highlighted the need for a secure yet fast communication protocol between users, gateways and sensor nodes. Due to the properties of the network, elliptic-curve cryptography seems to be the most viable choice as it requires less resources than most other options. In this paper we analyze the protocol suggested by Moghadam et al. which is based on ECDH (elliptic-curve Diffie-Hellman) and mention some of the flaws in their proposed authentication and key exchange protocol. Some attacks are also mentioned to further explain the shortcomings of their schema. Then a modified version of the protocol is proposed, analyzed and checked against the same attacks as an informal security proof.

翻译：广泛使用无线传感器网络(WSN)是由资源受限制的传感器节点组成的,与敏感行业和任务关键行业的网关进行通信,这突出表明用户、网关和传感器节点之间需要安全而快速的通信协议,由于网络的特性,椭圆曲加密似乎是最可行的选择,因为它需要的资源比大多数其他选项少。本文分析了Moghadam等人提出的协议,该协议以ECDH(电子-曲线Diffie-Hellman)为基础,并提及了他们拟议的认证和关键交换协议中的一些缺陷,还提到了一些袭击,以进一步解释他们的系统缺陷。然后提出了修改后的协议版本,对它作为非正式安全证据的同一袭击进行了分析和检查。