Improved AES scheme based on chaotic mapping

As encryption algorithms are widely used, the shortcomings of Advanced Encryption Standard (AES) round keys with strong correlation between them have also been found. In this paper, an improved AES scheme based on Logistic mapping and Tent mapping is proposed to use the random sequences generated by the two chaotic mappings to generate the wheel keys, and improve and optimize the original key expansion algorithm, which generates wheel keys without correlation among them, the key space is large enough, and the sequences and wheel keys are different each time, which enhances the ability of AES to withstand attacks. Through the security test analysis of random sequences, it shows that the improved AES can ensure the key expansion algorithm has enough security, solve the problem of wheel key correlation, and realize the effect of one secret at a time.