I.e. the private key in PKCS8 format, the public key in a format
suitable for OpenSSH's authorized_keys file. Seems like the most
pragmatic solution for now.
Change-Id: I02d9bf4d98d836d9fc33453bff0b3f4834e7e173
Reviewed-on: http://codereview.qt.nokia.com/2350
Reviewed-by: Christian Kandeler <christian.kandeler@nokia.com>