I am working on project to decode DSTAR and MOTOTRBO Digital transmissions ....
Mototrbo 4.1 and above firmware includes Enhanced Privacy ENCRYPTION.
I would chalk this up as vaporware. For a real working MotoTRBO decoder see the Digital Speech Decoder: http://forums.radioreference.com/trunking-control-channel-decoding/177609-digital-speech-decoder-1-2-mbelib-1-1-released.html. Obviously it will not work for encryption, but will successfully decode non-encrypted traffic.Project Status - Phase II
February 25, 2010: As of today we are joining Motorola’s approved developer program. We feel we could do a much better job creating applications for commercial and amateur use this way.
This means that from this moment, our MOTOTRBO decoding project is no longer in the public domain. We will not share any technical information proprietary to Motorola without a written approval from Motorola.