Research On Authentication And Encryption Technology Of Communication System Based On Stm32

In recent years, embedded communication systems is rapidly developing. A large number of products appeared on the market in various related fields.STM32 represented a new generation of Cortex-M3 core-based ARM is also a large number of applications in the process. So, in reality, communication systems, how to ensure the security data on the effectiveness of the communication process, has become a question worth considering.In the field of data security, AES (Advanced Encryption Standard) algorithm is a widely used public data encryption algorithm, which uses symmetric key mechanism, that is, encryption and decryption keys are the same, depending on the security of data key security. In the embedded systems tested AES program, 128-bit encryption speed can reach nearly the speed of 1 Mbps, fully meet the needs of voice communications.In the short-distance communication between peer layer technology, point to point wireless data communications needs of security, authentication system of the support. In modern communication process, in ensuring the real-time data transmission and correctness at the same time, how to prevent data from being stolen or illegally attack the problem of data security is especially important. In this system, the authentication process designed to ensure the legitimacy of authentication based on the address of the user.In order to realize user data protection and confidentiality of information in this article discussed in voice communications systems, using one-way authentication based on the device address plus AES symmetric encryption methods to ensure data security systems, rigorous algorithm for system authentication and encryption to ensure the accuracy and high speed, effective protection of the user's communications data.The paper described the authentication package encrypted security system.It could not only applies to the system discussed in this article, for a similar two-way based on different hardware platforms duplex communication system is also applicable for the design of other systems also have some reference value.