High Speed Frequency Hopping Communication System Security Technology Research

Frequency hopping communication is a very important anti interference wirelesscommunication means, in the area of military communication has been widely used andthe importance. The slow frequency hopping communication system, the main threat totracking mode interference or forwarding mode interference, effectively prevent theinterference measures are to improve the hopping rate. In addition, in the modernbattlefield communication and future wireless communication, wireless communicationnetwork backbone requires not only the transmission of voice data, also need to transferfrom a variety of data terminal generates large amounts of data and information andvideo information, so it is necessary to improve the frequency hopping communicationsystem data transmission rate. Therefore, much used in backbone communicationnetwork for high-speed FH communication system, carrying a large amount of datainformation, information security is very important.Construction of safe and reliable communication environment is an important stepin information security technology. Password based theory of information encryptiontechnology is based on the information and data encryption, the data is to explicitly stateexposure, information data only to the ciphertext state external appearance, andaccording to the theory of the password, if only by attacking the ciphertext to attempt toobtain plaintext data, the basic is not achievable, if you want to obtain plaintext, mustknow the corresponding cipher algorithm and decryption key. Therefore, once thecryptographic algorithm or key data is the attacker gets, it can obtain plaintextciphertext message data. Visible, the device password algorithm, key andcommunication data protection is very important. Sensitive to these information anddata security is through communication equipment in the design of security technologyto achieve.The main work and achievements include: an analysis of the frequency hoppingcommunication system is currently facing the problem of frequency hoppingcommunication, workflow were analyzed; the frequency hopping communication technology system and synchronization system undertook in-depth survey, to identifysystem encryption and password synchronization system; hardware module andsoftware module function and the encryption process discussed in detail. The hardwarewith SAMSUNG’s S3C2410processor as the core, to configure a variety of interfacemodule, applicable to a variety of interface communication module test. Highlights ofthe minimum core system, serial port expansion module design and implementation,and details the function of each module design and realization.