Greetings. These are the proceedings of the 11th in our series of International Workshops on Security Protocols. Our theme this time was Where have all the Protocols gone? Once upon a time 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? The intention of the workshops is to provide a forum where incompletely workedoutideascanstimulatediscussion, openupnewlinesofinvestigation, and...

Here are the proceedings of the 12th International Workshop on Security P- tocols. We hope that you will enjoy them, and that they will cause you to think at least one heretical thought. Please write or e-mail and share it with us. Our theme this workshop was Authentic Privacy. Traditionally we have based authentication upon a rather strong notion of identity, and have then built other security services on top of authentication. Perhaps if we want a more nuanced notion of privacy, then we need to re-examine some of our assu- tions, particularly when attackers and defenders share the same...

This book constitutes the thoroughly refereed post-workshop proceedings of the 6th International Workshop on Security Protocols held in Cambridge, UK in April 1998.
The 15 revised papers presented as position statements are followed by transcripts of the discussions between the authors and the audience. Also included is a report on the final panel discussion on future directions in security protocols research and developments. Thus the volume reflects the lively interaction at the workshop. The papers are devoted to the interrelations between trust and delegation, exploring the...

Welcome to the Proceedings of the 13th International Security Protocols Wo- shop. As usual, our meeting in Cambridge was just the beginning. After that, position papers were revised (often more than once) and transcripts were c- culated, discussed, and edited several times: our intention was not to produce a sterile record of who said what, but to share some promising lines of enquiry into interesting problems. Now we bring these proceedings to a wider audience so that you can join in. Our theme this time was The systemlikes youandwants to be yourfriend. Security is usually seen as making...

Hello and welcome. These are the proceedings of the 9th International Workshop on Security Protocols, the ?rst to be held in the new millennium. This year our theme was "mobile computing versus immobile security." As usual, the insights and challenges which emerged during the workshop are re?ected in the position papers, which appear here in rewritten form. Transcripts are also included of the discussions which took place in C- bridge as the initial versions were presented. These transcripts are intended to provide a perspective on lines of argument which are worth pursuing further. Our...

Welcome back to the International Security Protocols Workshop. Our theme for this, the 14th workshop in the series, is "Putting the Human Back in the Protocol." We've got into the habit of saying "Of course, Alice and Bob aren't really people. Alice and Bob are actually programs running in some computers." But we build computer systems in order to enable people to interact in accordance with certain social protocols. So if we're serious about system services being end-to-end then, at some level of abstraction, the end points Alice and Bob are...

This book constitutes the thoroughly refereed post-proceedings of the 15th International Workshop on Security Protocols, held in Brno, Czech Republic, in April 2007.The 15 revised full papers presented together with edited transcriptions of some of the discussions following the presentations have passed through multiple rounds of reviewing, revision, and selection. The topics addressed reflect the question "When is a Protocol Broken?" and how can it degrade gracefully in the face of partially broken assumptions, or how can it work under un(der)specified assumptions.

This book constitutes the thoroughly refereed post-workshop proceedings of the 21st International Workshop on Security Protocols, held in Cambridge, UK, in March 2013. The volume contains 14 revised papers with transcripts of the presentation and workshop discussion and an introduction, i.e. 15 contributions in total. The theme of the workshop was What's Happening on the Other Channel?.

This book constitutes the thoroughly refereed post-workshop proceedings of the 22nd International Workshop on Security Protocols, held in Cambridge, UK, in March 2014.After an introduction the volume presents 18 revised papers each followed by a revised transcript of the presentation and ensuing discussion at the event. The theme of this year's workshop is "Collaborating with the Enemy."

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This book constitutes the thoroughly refereed post-workshop proceedings of the 23rd International Workshop on Security Protocols, held in Cambridge, UK, in March/April 2015. After an introduction the volume presents 18 revised papers each followed by a revised transcript of the presentation and ensuing discussion at the event. The theme of this year's workshop is "Information Security in Fiction and in Fact."