The Wi-Fi Device Authentication Method Based on Information Hiding

摘要

For smart home scenarios with using of Wi-Fi communication, users may want to access or control smart terminals by connecting gateway with user devices such as mobile phones. However, such the connection lacks the authentication step of user device, so this communication is likely to be eavesdropped by attackers. This paper proposes a device authentication method to access to the gateway based on information hiding channel. The device performs identity identification and permission control to achieve secure and efficient data transmission between user device (mobile phone) and gateway. The method uses elliptic curve encryption algorithm to encrypt communication data, and put key negotiation process into the frame bodies of several randomly specified MAC layer data frames. Under the condition of ensuring security, the efficiency of hidden communication is improved. The result of security analysis proves that this method has scalability and can resist physical capture attacks and Sybil attacks to a certain extent.