[VOIPSEC] Why a secure keyechange for media encryption?

[Michael Prochaska]

i've found new material about public key distribution over DNS.

here is a thesis from 2004:
http://www.cs.ucr.edu/~dberger/Documents/thesis.pdf

and here a follow up to this thesis which was presented in ACSAC 2005 
(http://www.acsac.org/):
http://www.acsac.org/2005/abstracts/49.html

and here a more detailed version from this document:
http://www.cs.ucr.edu/~jjones/iks.pdf

sounds good!

regards,
michael