User guide

d sends the message that is encrypted using BlackBerry transport layer encryption and PGP encryption to the
BlackBerry Enterprise Server
2. The BlackBerry Enterprise Server removes the BlackBerry transport layer encryption and sends the PGP encrypted
message to the recipient.
Data flow: Receiving a PGP encrypted message
If a recipient installs the PGP Support Package for BlackBerry smartphones on a BlackBerry device, the device decrypts
incoming PGP encrypted messages.
1. A sender uses the PGP technology on the email application to encrypt an email message using the PGP public key of
the recipient.
2. The BlackBerry Enterprise Server performs the following actions:
a retrieves the email message from the messaging server
b uses BlackBerry transport layer encryption to encrypt the PGP encrypted message
c sends the email message encrypted using BlackBerry transport layer encryption and PGP encryption to the device
3. The device performs the following actions:
a decrypts the BlackBerry transport layer encryption and stores the PGP encrypted message in the flash memory of
the device
b decrypts the PGP encrypted message using the PGP private key of the recipient and displays the contents of the
email message when the recipient opens the email message on the device
Security Technical Overview Extending messaging security to a device
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