I thought this might be of interest for the list, but haven't seen it
mentioned/discussed here: Some progress has been made
reverse-engineering the Skype protocol [1]. No details on the crypto
implementation yet, but first attempts to understand the P2P model they
use.
Cheers,
Ralf
[1] S. A. Baset and H. Schulzrinne
An Analysis of the Skype Peer-to-Peer Internel Telephony Protocol
http://arxiv.org/pdf/cs.NI/0412017
[2] H.T. Kung: CS143: Computer Networks (P2P VoIP)
http://www.eecs.harvard.edu/cs143/slides/2004-12-02-p2p-voip.pdf
