Methods and apparatus to establish secure low energy wireless communications in process control system

Methods and apparatus to establish secure low energy wireless communications in a process control system are disclosed. An example field device includes a bluetooth low energy (BLE) interface used toreceive a first initialization message from a remote device over an unpaired BLE connection, the first initialization message includes a plaintext message containing the authentication content, and the authentication content is generated based on a private authentication token available to the remote device by using a middleware. The field device also includes a BLE message analyzer used to validate the plaintext message based on the authentication content and by using the authentication token stored by the field device. 公开了在过程控制系统中建立安全的低能量无线通信的方法和装置。示例性现场设备包括蓝牙低能量(BLE)接口，用于通过未配对的BLE连接从远程设备接收第一初始化消息。第一初始化消息包括明文消息，该明文消息包含认证内容。认证内容基于可用于远程设备的私有认证令牌使用中间件来生成。现场设备还包括BLE消息分析器，用于基于认证内容使用由现场设备存储的认证令牌来验证明文消息。