The article is devoted to an overview of protocols used in broadband wireless networks and methods of protecting the information's transmission in them using encryption algorithms. Theoretical and practical aspects, features and principles of wireless access protocols in Wi-Fi, WiMAX, GSM, etc. are considered. An overview of the used data encryption methods, vulnerabilities encountered in algorithms, and methods for solving these problems considered in various laboratories is carried out. The purpose of the study is to review the encryption algorithms used in wireless access protocols. Based on the analyzed data, a conclusion was made on the use of the AES and A5(128) algorithms, as well as the attack protocols and solution methods identified on the data. The object of the study is the technology of wireless local broadband access. The subject of the study is the encryption algorithms underlying wireless broadband networks Scientific novelty. A review was carried out in encryption algorithms used in various wireless network standards. The information security threats arising in the AES and A5 encryption standards related to attacks using linked and session keys are considered.

Keywords: information technology, cryptography, data protection, encryption algorithm, AES, A5, WiMAX, Wi-Fi