Internet of Things means connecting different devices through the Internet. The Internet of things enables humans to remotely manage and control the objects they use with the Internet infrastructure. After the advent of the Internet of Things in homes, organizations, and private companies, privacy and information security are the biggest concern. This issue has challenged the spread of the Internet of things as news of the users theft of information by hackers intensified. The proposed method in this paper consists of three phases. In the first phase, a star structure is constructed within each cluster, and a unique key is shared between each child and parent to encrypt and secure subsequent communications. The second phase is for intracluster communications, in which members of the cluster send their data to the cluster head in a multi hop manner. Also, in this phase, the data is encrypted with different keys in each hop, and at the end of each connection, the keys are updated to ensure data security. The third phase is to improve the security of inter cluster communications using an authentication protocol. In this way, the cluster heads are authenticated before send- ing information to prevent malicious nodes in the network. The proposed method is also simulated using NS2 software. The results showed that the proposed method has improved in terms of energy consumption, end-to-end delay, flexibility, packet delivery rate, and the number of alive nodes compared to other methods.

翻译：物联网意味着通过互联网连接不同的设备。物联网使人类能够借助互联网基础设施远程管理和控制其所使用的物体。在物联网进入家庭、组织和私营企业后，隐私与信息安全已成为最大的关注点。随着黑客窃取用户信息的新闻日益增多，这一问题对物联网的普及构成了挑战。本文提出的方法包含三个阶段。第一阶段，在每个簇内构建星型结构，并在每个子节点与父节点之间共享唯一密钥，以加密并保护后续通信。第二阶段用于簇内通信，簇内成员以多跳方式将数据发送至簇头。此外，在此阶段，数据在每一跳使用不同的密钥进行加密，并在每次连接结束时更新密钥以确保数据安全。第三阶段通过采用认证协议提升簇间通信的安全性。通过这种方式，簇头在发送信息前需经过认证，以防止网络中的恶意节点。所提方法还使用NS2软件进行了仿真。结果表明，与其他方法相比，所提方法在能耗、端到端时延、灵活性、数据包投递率和存活节点数量方面均有所改善。