In browser favorites.

Click the start menu, find the EDGE browser in all applications, open it, start the browser, click the favorites button in the browser, after opening, you can see all the files, and you need to enter the password when opening. Private key file.

The private key file uses its own private key to process the file. Since the key is only owned by the person, this creates a file that cannot be viewed by others, thus forming a digital signature, which also increases security. sex.