Symmetric encryption algorithm_AES English version 2Symmetric-key Cryptography of AESLixinShanghai University of Electric Power School of computer science and technology Shanghai Pudong New Area154310

he algorithm is also known as the Rijndael algorithm.

The AES algorithm uses a block cipher that operates on fixed-length blocks of data. The block size for AES is 128 bits, and the key size can be 128, 192, or 256 bits. The algorithm consists of several rounds of substitution, permutation, and mixing operations, which are designed to produce a high degree of confusion and diffusion in the ciphertext.

One of the strengths of AES is its resistance to known attacks, such as differential and linear cryptanalysis. It also has a relatively small memory footprint and is efficient in software and hardware implementations.

In summary, the AES algorithm is a widely used symmetric key encryption algorithm that provides strong security and efficiency. Its adoption as a standard by the US government and other organizations has made it a popular choice for secure communication and data storage