Decoding AirPlay Mirroring Protocol

Question

I want my app to mirror the display of my iPad 2 to my Mac.

I have published the _airplay._tcp service and am listening on the port 7100. The app shows in the AirPlay menu and the Mirroring option is also there. Video and audio streaming work perfectly.

But I don't know how to decode the FairPlay encryption (POST /fp-setup) to support AirPlay mirroring. I have taken reference from http://www.aorensoftware.com/blog/2011/08/20/exploring-airplay-mirroring-internals/. If anyone has any idea on how to do that, please tell me.

Troutman

This question is currently intractable, because the exact specifications of FairPlay encryption have not been reverse-engineered by the community. The effort is noble, but in the scope of answering this question, potential answerers will very likely expose themselves (and SO) to significant legal exposure from Apple. I wish you the best of luck in your endeavors, though. – Dobrinsky

Any News? It seems that plenty of products eg. Reflections / Airserver and others now have got a workable solution… it would be great to hear if either of you have got anywhere. – Anesthetize

Answer 1

Check out AirServer -> they've already done this and it works flawlessly (almost)..

Abutter

+1: AirServer works just fine. For presentations, etc. really helpful. – Ignorance

does someone have airserver code or some link that may give some idea how it works? – Millman

Answer 2

They are using AES encryption, -- partially right. But very long code in fp-setup handshaking,(First FP-SETUP, Second FP-SETUP, fpaeskey encryption) and also the real decryption part is Apple's customized module.

Mind