: Right-click the file and select "Add to archive...". Set Password : In the options, click the Set password button. Enter a strong, unique password.
💡 : If a RAR file downloads as a .txt file, it might be a naming error. Try removing the .txt extension to leave only .rar . Locked-Up.rar
Double-click the file to open it in WinRAR or a similar tool. You will be prompted to enter the password. : There is no official "backdoor" to RAR encryption. You can try recovery tools like John the Ripper or hashcat . : Right-click the file and select "Add to archive