AES key arrangement method

Abstract

The invention relates to an advanced encryption standard (AES) key arrangement method. According to the method, firstly, the confusion and diffusion performance of the algorithm is improved by using the good cryptographic characteristic of a chaos equation, and a chaos sequence and a round function are combined to be used for generating a round key by combining the advantages of the original round function; known attacks aiming at an algorithm are resisted by changing operation of a round function and introducing an initial encryption concept, then a new round constant table and two key arrangement schemes are designed, correlation between round keys is reduced, the round keys can reach brute force cracking strength in the second round, and meanwhile, the number of the round keys is reduced. By using the algorithm provided by the invention, the stream encryption of the packet can be realized, different round keys can be generated when the same initial key is used when the plaintext packet is encrypted each time, the KRAK attack aiming at a wireless channel protocol can be resisted, and the safety performance of the original algorithm is greatly improved.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to an AES key arrangement method. Background technique [0002] While WLAN brings convenience to users, people also pay attention to its security. However, due to the inherent openness of wireless network transmission media, the limitation of wireless terminal resources, the mobility of wireless terminals and the network topology The dynamics of wireless networks, therefore, security issues, as the biggest challenge in the development of wireless networks, have always been the focus of research in both academia and industry. [0003] The Advanced Encryption Standard is a block cipher algorithm released by the National Institute of Standards and Technology (NIST) after the data encryption standard is broken. Since the publication of the Advanced Encryption Standard, it has been used as a core encryption algorithm in various security protocols. Because of its fast implem...

AI Technical Summary

Problems solved by technology

At the same time, in the wireless channel protocol, whether it is the WIFI protocol, the Bluetooth protocol or the Zigbee protocol, the Advanced Encryption Standard is used as the encryption algorithm built into the protocol, and the existing lightweight block encryption algorithms also use the Advanced Encryption Standard as a reference or as an advanced encryption standard. A variant of the encryption standard. A good cryptographic algorithm should satisfy both efficiency and security. With the rapid development of the Internet of Things and wireless sensor networks, the traditional encryption algorithm has been unable to complete the power consumption, efficiency and security of the algorithm in the current wireless network environment. Security performance requirements, so an AES key arrangement method is designed to enhance the security of the AES encryption process

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