No key name specified
You cannot sign your .bar file because you did not specify a signing key.
The final parameter of the blackberry-signer tool specifies the key with which to sign your .bar file. Your .bar file must be signed twice: first by the RIM Signing Authority, then by your Developer Certificate.
To request a signature from the RIM Signing Authority, type RDK to the end of your command line.
To sign your BAR file using your Developer Certificate, type author to the end of your command line.