The generation of a QR-code after encryption is truly useful for several reasons: in fact, the QR-code will store (encrypted) the passphrase used to create the encrypted archive, so that QR-code could be saved as a .PNG image file and it could be used to decrypt the archive without having to manually enter the correct passphrase.
When you want to use a QR-code to decrypt an archive, you just have to click on "Acquire QR-code": depending by your version of CZIP X (see the table below), the application will ask if you want to load the code from a .PNG file or if you want to scan it by using your device's camera. The decryption will begin when CZIP X will recognize a valid QR-code.
The QR-code could be useful if you need to share an encrypted archive with others but you don't want to reveal them the passphrase you used. As example, you could send the archive via e-mail to somebody and, at a later time, you could send the .PNG file with the QR-code through apps like Skype, WhatsApp or Telegram.
The passphrase stored in the QR-code behaves just as any other passphrase that you may enter by hand: this means that if you generate a QR-code for a non shareable archive, the QR-code can't decrypt the archive out of the device that originally created the archive. In this case, the QR-code acts only a reminder for the passphrase for the author of the archive.
When the QR-code get saved as a .PNG image, the QR-code could optionally show the CZX archive whom is associated.
In CZIP X versions for Windows 10 / Windows 10 Mobile / Android, the QR-code can be shared as a .PNG image through the native sharing interfaces of the operating systems.
|Operating systems||QR-code from file||QR-code scan through camera|
|Windows 10 Mobile||•||•|
|Windows 7 / 8 / 8.x||•||×|