By default, when a BlackBerry® device supports AES, the BlackBerry® Enterprise Solution uses AES for BlackBerry transport layer encryption. The BlackBerry Enterprise Solution uses AES in CBC mode to generate the message keys and device transport keys. The keys consist of 256 bits of data.

BlackBerry® Enterprise Server version 4.0 or later, BlackBerry® Device Software version 4.0 or later, and BlackBerry® Desktop Software version 4.0 or later support AES.

For more information about how the BlackBerry Enterprise Server uses AES for BlackBerry transport layer encryption to communicate with BlackBerry devices, visit www.blackberry.com/support to read article KB05429.