Financial details of the transaction, which is subject to regulatory approvals, were not disclosed.
The two companies had already partnered to offer Secusmart-equipped BlackBerry handsets to most German government ministries and to the chancellor herself following allegations last year of the United States spying on its ally.
The deal firms BlackBerry's reputation for secure mobile communications, chief executive John Chen said in a statement. He said the security needs of smartphone users continue to increase "with the growing complexity of enterprise mobility, with devices being used for more critical tasks and to store more critical information, and security attacks becoming more sophisticated."
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