Recent advances in digital signal processing enabled a number of new services in various application domains, ranging from enhanced multimedia content production and distribution to advanced healthcare systems for continuous health monitoring and biometric signal processing for access control, identity verification and authentication. At the heart of these services lies the ability to securely manipulate signals in order to satisfy security requirements such as privacy, intellectual property, authenticity, and access control. Classical technological solutions for “secure manipulation of signals” build a secure layer on top of existing signal processing modules, to protect them from leakage of private information, assuming that the involved parties trust each other. In an increasing number ofapplications, however, the classical security model is no longer adequate since one or multiple of the parties involved in the communication, distribution or processing of the data may not be trusted. In those scenarios, the possibility of processing signals in such a way that part of or all the information provided by the various parties is kept secret would be of invaluable importance. In the framework outlined before, SPEED 2009 aims to disseminate the latest cutting-edge results in this research field and to bring together interested actors from academia, industry, and government.

Submissions of papers exploring the application of signal processing to encrypted contents, both from a theoretical and practical point of view are solicited.

Topics of interest include, but are not limited to:

Cryptographic primitives and protocols for signal processing operations

Secure matching and analysis of signals

Searching on encrypted signals

Cryptographic techniques for real-valued or fuzzy data

Privacy preserving protocols

Secure watermark embedding and detection

Next-generation secure content management

Privacy through secure signal processing

Transcoding of encrypted content

Design and evaluation of encryption schemes specifically tailored towards signals

List of accepted papers:

• "On privacy preserving search in large scale distributed systems: a signal processing view on searchable encryption", by Sviatoslav Voloshynovskiy, Fokko Beekhof, Oleksiy Koval, and Taras Holotyak.

• "How to Combine Homomorphic Encryption and Garbled Circuits Improved Circuits and Computing the Minimum Distance Efficiently", by Vladimir Kolesnikov, Ahmad-Reza Sadeghi, and Thomas Schneider.
• "Modulo reduction for Paillier encryptions and its application to secure statistical analysis", by Jorge Guajardo, Bart Mennink and Berry Schoenmakers.
• "Efficient implementation of a buyer-seller watermarking protocol using a composite signal representation", by Mina Deng, Tiziano Bianchi, Alessandro Piva, and Bart Preneel.
• "Combining Signal Processing and Cryptographic Protocol Design for Efficient ECG Classification", by Mauro Barni, Pierluigi Failla, Vladimir Kolesnikov, Riccardo Lazzeretti, Ahmad-Reza Sadeghi, and Thomas Schneider.
• "Processing in the Encrypted Domain using a Composite Signal Representation", by Tiziano Bianchi, Thijs Veugen, Alessandro Piva, and Mauro Barni.
• "A quantitative analysis of crossmatching resilience for a continuous-domain biometric encryption technique", by Ileana Buhan, Jeroen Breebaart, Jorge Guajardo, Koen de Groot, Emile Kelkboom, Ton Akkermans.
• "Secure Direct and Iterative Protocols for Solving Systems of Linear Equations", by Juan Ram´on Troncoso-Pastoriza, Pedro Comesa˜na, and Fernando P´erez-Gonz´alez.

Conference Chairs:

   Jorge Guajardo     Philips Research Europe, NL,  jorge.guajardo(at)philips.com

Program Committee:

·  F. Armknecht               Ruhr-University Bochum, D

·  M. Barni                       University of Siena, IT

·  C. Cachin                           IBM Zurich Research Lab,CH

·  D. Catalano                  University of Catania, IT

·  T. Kalker                      Hewlett Packard Labs, USA

·  S. Katzenbeisser             Technische Universität Darmstadt, D

·  I. Lagendijk                   Delft University of Technology, NL

·  N. Memon                    Polytechnic Instituteof NYU, USA

·  B. Preneel                    KatholiekeUniversiteit Leuven, BE

·  A.R. Sadeghi                Ruhr-University Bochum, D

·   B. Schoenmakers         Technische Universiteit Eindhoven,NL

·  T. Veugen                    TNO Information and Communication Technology & Delft Univ. of Technology, NL

·  M.Wu                            University of Maryland, USA