Access wouldn’t include ability to decrypt BlackBerry Enterprise Server customers
In an in-depth report on Motherboard and its parent site VICE, Jordan Pearson and Justin Ling report that the Royal Canadian Mounted Police had access to Blackberry's master encryption key — giving them access to every BBM that goes over a network the RCMP can gain access to, as long as the Blackberry user wasn't hooked up to a BlackBerry Enterprise Server (BES).