Introduction - If you have any usage issues, please Google them yourself
AES encryption process is in a 4 × 4 matrix of bytes in the operation, the matrix is also known as " the body (state)" , its initial value is a plain text block (the size of the matrix is clearly an element of a Byte block .) (Rijndael encryption block for greater support, the matrix to increase the number of rows depending on the circumstances) encryption, each round of AES encryption cycle (except the last one outside) contains four steps: