User guide

All versions of the BlackBerry Enterprise Server, BlackBerry Device Software, and BlackBerry Desktop Software support
Triple DES.
For more information about Triple DES, see Federal Information Processing Standard - FIPS PUB 81 [3].
Data flow: Sending an email message to a
device using BlackBerry transport layer
encryption
1. A sender sends an email message to a BlackBerry device user.
2. The BlackBerry Enterprise Server performs the following actions:
a compresses the email message
b encrypts the email message using the message key
c encrypts the message key using the device transport key of the device
d sends the encrypted email message and encrypted message key to the device
3. The BlackBerry device user clicks on the email message on the device to open it.
4. The device performs the following actions:
a decrypts the message key using the device transport key
b decrypts the email message using the message key
c decompresses the email message
d displays the email message to the user
Security Technical Overview Encrypting data that the BlackBerry Enterprise Server and a device send to each other
34