International Workshop on Security Protocols
Cambridge, England
2 -- 4 April 2003

The Eleventh Cambridge International Workshop on Security Protocols will be held in the William Mong Hall, Sidney Sussex College, from Wednesday 2nd to Friday 4th April, 2003.


The provisional programme for the workshop has now been published.


The theme of the workshop is "where have all the protocols gone?". 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. Our experience is that the emergence of the theme as a unifying thread takes place during the discussions at the workshop itself.

As one example of this, there was a time when security protocols lived mainly in the network and transport layers. Now they increasingly hide in applications, or in specialised hardware. Does this trend lead to better security architectures, or is it an indication that we are addressing the wrong problems?

As usual the theme is not intended to restrict the topic of your paper, but to provide a particular perspective and to focus the discussions.

Attendance is by invitation only, and in order to be invited you must submit a position paper. Please send a first draft of a position paper to James Malcolm ( by 24th February. Short indicative submissions are preferred, preferably no more than 2000 words. You will have the opportunity to extend and revise your paper both before the pre-proceedings are issued, and after the workshop. At the workshop, you will be expected to spend ten minutes introducing the idea of your paper. This will be followed by a longer discussion.

To be considered for invitation, you must submit a position paper by 24th February, but please make an initial response as soon as possible, even if it is only to say that you are potentially interested.

The proceedings of previous workshops in this series have been published by Springer-Verlag as Lecture Notes in Computer Science. The 2002 Proceedings are currently being edited for publication, but previous volumes are available as LNCS 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.


If you wish to revise your paper before the workshop, you may do so. However, the absolute and hard deadline for receiving any such revision is 9am (GMT) on Monday 24th March.

There are no stipulations as to how position papers should be formatted; anything that fits on A4 would do, but you will have the opportunity to revise this paper after the workshop for the final proceedings and you will need to prepare your revised paper in LaTeX using llncs.cls macros. This is a single column format.

There is no page limit, but short submissions are encouraged, especially for position papers to appear in the pre-proceedings. In the final publication form in the Springer LNCS series, I think the longest paper in recent years was under 15 pages.


There will be a fee of #250 UK pounds which will include lunches and the formal dinner. Pre-procedings will be provided at the workshop.

You can pay when you get to the workshop. Cheques should be made payable to "Security Protocols Workshop". Cash is acceptable. If you need to pay by direct transfer, our bank details are:
[NatWest bank at King's Parade in Cambridge, sort code 60-04-23, account number is 24142255].


Lunch is included in the workshop fee, as is the formal dinner.

The formal dinner on Thursday night is in Kings college

. Spaces are limited. Please inform James whether or not you intend to come to the dinner, and whether you wish to bring a guest. Please also indicate any dietary restrictions now.


You need to arrange your own accommodation, though if you wish we can arrange a room in the college.

A good list is provided at The hotel that usually use had a fire recently, alas.

If you wish to use a college room, please let us know by Wednesday 19th March. We will add the charge to your workshop fee.

Delegates who stay in college will need to tell us their names and date/time of arrival. The rooms will be allocated by the college Housekeeper and they can get their keys on arrival at the Porters' Lodge. Bed and Breakfast is #32 UK pounds per person.


This is a workshop, not a formal conference, and the programme remains flexible, despite a fairly large number of speakers this year. If you had not planned to speak, but suddenly find a desire to give a short talk, it may still be possible -- talk to Bruce. But we do still want to leave lots of time for informal discussions.

We start on Wednesday at 10:00 with coffee and registration, etc. followed by the first talk at 10:30. We may start a little earlier on Thursday, but on Friday (after the dinner the night before), we will again start at 10:00. The workshop will close with lunch at 1pm.

This is more or less what we have done in previous years.

You should be aware that the discussions are recorded and transcribed, so that they can eventually form part of the final proceedings.


Sidney Sussex College has general info at and a map of the college at There are directions to the college, and a map of central Cambridge at

If you are driving to Cambridge, the best option is indeed one of the five Park and Ride car parks, but you cannot leave cars at the Park and Ride car parks overnight, so if you plan to leave your car overnight, you will need to park in a residential street some way out from the town centre. The Lammas Green car park does allow overnight parking, but it is not particularly recommended. Long term parking is VERY expensive, see If you return to your car each morning, you can park at Parkerís Piece, but it is hugely expensive. Another alternative is to move your car, or ask where you are staying.


Ph.D. students from the computer Laboratory will be welcome to attend without charge (but will have to find their own lunch!), whereas staff will have to pay. In either case, please let James Malcolm know that you are coming.

Organizing Committee:

If you have any enquiries about the workshop then please contact one of the organizing committee.

Michael R. Roe, Microsoft Research Limited, Cambridge
D. Bruce Christianson, University of Hertfordshire,
James A. Malcolm, University of Hertfordshire, Phone: +44 17 07 28 43 10

James A. Malcolm