AES256 is an encryption algorithm, and this web page can implement custom key encryption
由于密钥对字节长度有要求，建议使用系统随机生成的密钥，点击random按钮即可生成，请妥善保管
Since the key has requirements for byte length, it is recommended to use a key randomly generated by the system, and click the random button to generate it, please keep it properly