Encrypt chat data

The author is a programmer who develops chat software. He found that when you are checked by the chat software on the market, your chat records are in plain text in other people's background, which is extremely unsafe. You can use this application to encrypt your chat records before sending them. After telling the other party the password through other means (such as telephone, which is quite safe), the other party can decrypt it before viewing it! This application promises not to save your encrypted and decrypted information locally or on the network. For your safety, you also need to enter the password every time, which greatly guarantees your chat security!