incl. certification at:
http://www.anu.edu.au/people/Roger.Clarke/II/CryptoSecy.html#acpf
and the problems of multi-function key certification authorities at:
http://www.anu.edu.au/people/Roger.Clarke/II/CryptoSecy.html#mfca
Roger Clarke http://www.anu.edu.au/people/Roger.Clarke/
http://www.etc.com.au/Xamax/
Xamax Consultancy Pty Ltd, 78 Sidaway St, Chapman ACT 2611 AUSTRALIA
Tel: +61 2 6288 1472, and 6288 6916 mailto:Roger.Clarke@anu.edu.au
Visiting Fellow, Faculty of Engineering and Information Technology
The Australian National University Canberra ACT 0200 AUSTRALIA
Information Sciences Building Room 211 Tel: +61 2 6249 3666