Nokia E5-00 - Manual (Page 161)

If you cannot recall the password to unlock a locked memory card, you may reformat
the card, in which case the card is unlocked and password removed. Formatting a
memory card destroys all data stored on the card.
Encryption
Select Menu > Ctrl. panel > Data mgr. > Encryption .
Encrypt your device or memory card to prevent outsiders from accessing your
important information.
Encrypt device memory or memory card
To encrypt the device memory, select Phone memory .
To encrypt the memory card, select Memory card and from the following:
Encrypt without saving key — Encrypt the memory card without saving the
encryption key. If you select this option, you cannot use the memory card in other
devices, and if you restore factory settings, you cannot decrypt the memory card.
Encrypt and save key — Encrypt the memory card and save the key manually in
the default folder. For security, store the key to a safe place outside the device. For
example, you can send the key to your computer. Enter a pass phrase for the key
and a name for the key file. The pass phrase should be long and complex.
Encrypt with restored key — Encrypt the memory card with a key you have
received. Select the key file and enter the pass phrase.
Decrypt device memory or memory card
Always remember to decrypt the device memory and/or the memory card before
updating the device software.
To decrypt the device memory, select Phone memory .
Security and data management 161