User guide

Data flow: Sending an email message from a
device using BlackBerry transport layer
encryption
1. A sender sends an email message from a BlackBerry device to a recipient.
2. The device performs the following actions:
a compresses the email message
b encrypts the compressed email message using the message key
c encrypts the message key using the device transport key of the device
d sends the encrypted message key and encrypted email message to the BlackBerry Enterprise Server
3. The BlackBerry Enterprise Server 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 forwards the email message to the recipient
Security Technical Overview Encrypting data that the BlackBerry Enterprise Server and a device send to each other
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