BlackBerry has always been untrustworthy when it comes to encryption:
> The defence in the case surmised that the RCMP must have used the "correct global encryption key," since any attempt to apply a key other than BlackBerry's own global encryption key would have resulted in a garbled mess. According to the judge, "all parties"—including the Crown—agree that "the RCMP would have had the correct global key when it decrypted messages during its investigation."
> The defence in the case surmised that the RCMP must have used the "correct global encryption key," since any attempt to apply a key other than BlackBerry's own global encryption key would have resulted in a garbled mess. According to the judge, "all parties"—including the Crown—agree that "the RCMP would have had the correct global key when it decrypted messages during its investigation."
https://www.vice.com/en/article/mg77vv/rcmp-blackberry-proje...