A provisional schedule for the workshop has now been published.
We started at 9:45 on Tuesday 19th (tea and coffee available from 9am), and concluded after the dinner on the evening of Wednesday 20th.
Shishir's paper is here. All the other position papers were distributed at the workshop; this one was missing because I failed to let him know that he had missed the deadline!

As with previous years, attendance at the International Workshop on Security Protocols is by invitation only.


The theme of this year's workshop is "What's Happening on the Other Channel?"

Many protocols use a secondary channel, either explicitly (as in multichannel protocols) but more usually implicitly, for example to exchange master keys, or their hashes. The role of the Other Channel is fundamental, and often problematic, and yet protocol composers typically take them as a given.

Sometimes the Other Channel really is completely covert, but sometimes it just has properties that are different. And it's not only security properties that are relevant here: bandwidth, latency and error rate are often important considerations too. Even a line-of-sight channel usually doesn't quite have the properties that we unthinkingly attributed to it.

Moriarty has been subscribing to the Other Channel for years: perhaps it's time for Alice and Bob to tune in too.

The theme itself is not intended to restrict the topic of your paper, but to help provide a particular perspective and to focus the discussions. Our intention is to stimulate discussion likely to lead to conceptual advances, or to promising new lines of investigation, rather than merely to consider finished work.

Pre-proceedings will be provided at the workshop. The proceedings of previous workshops in this series have been published by Springer-Verlag as Lecture Notes in Computer Science (see LNCS 7622, 7114, 6615, 5964, 5087, 4631, 3957, 3364, 2845, 2467, 2133, 1796, 1550, 1361 and 1189). If you have not previously attended the Security Protocols Workshop, you may find it helpful to refer to these to get an idea of the flavour.


Mar 4th: Revised papers due

Mar 6th: Deadline for registration

Mar 19th: Workshop in Cambridge

A printable copy of this announcement may be found at

If you are invited to the workshop, don't forget that you can send us a revised copy of your paper (for inclusion in the pre-proceedings) by the deadline above. You should also register using the form provided.


If you have any enquiries about the workshop then you might want to look at the rules, but if your question is not answered there, please contact one of the organising committee:

Bruce Christianson (Email: B.Christianson AT
Professor of Informatics, University of Hertfordshire
Paper submission to:
James A. Malcolm (Email: J.A.Malcolm AT, Tel: +44-1707-284310).
Proceedings editors:
Frank Stajano (University of Cambridge)
Jonathan Anderson (University of Cambridge)