WEWoRC

Western European Workshop on Research in Cryptology

WEWoRC 2009

July 7-9, 2009

Graz, Austria



Tentative schedule

Monday, July 6 Evening 18:30 - 20:00 Registration and welcome drink
     
Tuesday, July 7 08.00-08.50 Registration
  08.50-09.00 Welcoming remarks
  09.00-10.45 Session "SHA-3 cryptanalysis I" (chair: Christian Rechberger)
   
Round-Reduced Near-Collisions of BLAKE-32 by Jian Guo and Krystian Matusiewicz (Nanyang Technological University, Singapore, and Technical University of Denmark)
   
Collisions and Preimages for Sarmal by Florian Mendel and Martin Schläffer (IAIK, Graz University of Technology, Austria)
   
On Free-Start Collisions and Collisions for TIB3 by Florian Mendel and Martin Schläffer (IAIK, Graz University of Technology, Austria)
  10:45-11:15 Coffee break
  11.15-12.25 Session "Lattices" (chair: Mario Lamberger)
   
Probabilistic Analysis of LLL Reduced Bases by Michael Schneider, Johannes Buchmann and Richard Lindner (Technische Universität Darmstadt, Department of Computer Science, Germany)
   
Density of Ideal Lattices by Johannes Buchmann and Richard Lindner (Technische Universität Darmstadt, Germany)
  12:25-13:30 Lunch break
  13:30-15:50 Session "KEM, protocols, and primality" (chair: Marko Hölbl)
   
Efficient Chosen-Ciphertext Security from Selective-ID Secure Identity-Based Key Encapsulation by Jonas Schrieb (University of Paderborn, Germany)
   
Cryptanalysis of a Lightweight RFID Authentication Protocol - LRMAP by Imran Erguler, Mete Akgun, and Emin Anarim (National Research Institute of Electronics and Cryptology, TUBITAK-UEKAE, and Electrical-Electronics Engineering Department, Bogazici University,Turkey)
   
A Simple Derivation for the Frobenius Pseudoprime Test by Daniel Loebenberger (B-IT, Universität Bonn, Germany)
  15:50-16:20 Coffee break
  16:20-17:15 Session "Post-Quantum Cryptography" (chair: Christian Rechberger)
  16:20-17:15 Invited talk by Paulo Barreto: "Post-quantum cryptosystems based on coding theory: overview and recent developments"
  17:15-17:55 Session "Block ciphers I" (chair: Florian Mendel)
   
Application of the cube attack to stream and block ciphers by Piotr Mroczkowski and Janusz Szmidt (Military Communication Institute and Military University of Technology, Warsaw, Poland)
   
Key Recovery Attack on full GOST Block Cipher with Zero Time and Memory by Ewan Fleischmann, Michael Gorski, Jan-Hendrik Huehne, and Stefan Lucks (Bauhaus-University Weimar, Germany)
     
Wednesday, July 8
  09.00-10.25 Session "Signatures" (chair: Marko Hölbl)
   
Exploring Subliminal Channels in Pairing-Based Signatures by Laila El Aimani and Yona Raekow (B-IT, Universität Bonn, Germany)
   
Short Signature Scheme From Bilinear Pairings by by Sedat Akleylek, Baris Bulent Kirlar, Omer Sever, and Zaliha Yuce (Institute of Applied Mathematics, Middle East Technical University, Turkey)
   
Hierarchical Ring Signatures by Lukasz Krzywiecki, Miroslaw Kutylowski, Anna Lauks-Dutka (Institute of Mathematics and Computer Science, Wroclaw University of Technology, Poland)
  10:25-10:55 Coffee break
  10.55-12.40 Session "Stream Ciphers"  (chair: Maria Naya-Plasencia)
   
Cryptanalysis of Reduced Word Variants of Salsa by Sylvain Pelissier (EPFL, Switzerland)
   
Bivium as a Mixed-0-1 Programming Problem by Julia Borghoff, Lars R. Knudsen, Mathias Stolpe (DTU Mathematics, Technical University of Denmark, Denmark)
   
Improved Distinguishing Attacks on HC-256 by Gautham Sekar and Bart Preneel (Katholieke Universiteit Leuven, Dept. ESAT/COSIC, Belgium, and IBBT, Belgium
  12:40-13:40 Lunch break
  13.40-14.50 Session "Implementation Attacks" (chair: Christian Rechberger)
   
Multi-Linear cryptanalysis in Power Analysis : MLPA by Thomas Roche and Cedric Taverniere (Laboratoire Informatique de Grenoble, and CS, Communication and Systems, France)
   
Fault injection's sensitivity of the McEliece PKC by Pierre-Louis Cayrel and Pierre Dusart (Universite de Paris 8, and Universite de Limoges, France)
  14.50-15.45 Invited talk by Krzysztof Pietrzak: "Provable security for physical cryptography"
  15:45-16:15 Coffee break
  16:15-17:25 Session "SHA-3 cryptanalysis II" (chair: Martin Schläffer)
   
Cryptanalysis of the MCSSHA Hash Functions by Jean-Philippe Aumasson and Maria Naya-Plasencia (FHNW Windisch, Switzerland, and INRIA project-team SECRET, France
   
Structural Attacks on Two SHA-3 Candidates: Blender-n and DCH-n by Mario Lamberger and Florian Mendel (IAIK, Graz University of Technology, Austria)
  18:45 - ?? Schlossberg excursion and conference dinner (starts at 20:00) (location)
     
Thursday, July 9
  09.30-11.00 Session "Efficient Cryptology" (chair: Ludovic Perret)
   
Efficient root finding of polynomials over fields of characteristic 2 by Vincent Herbert (INRIA Paris - Rocquencourt, France)
   
Efficient Arithmetic on Binary Genus-2 Curves by Peter Birkner and Tanja Lange (Technische Universiteit Eindhoven, Netherlands)
   
Fast implementation of MASH hash function family by Marek Gradzki (Military University of Technology, Institute of Mathematics and Cryptology, Warsaw, Poland)
  11:00-11:30 Coffee break
  11.30-12.40 Session "Hash Functions" (chair: Florian Mendel)
   
Analysis of Reduced MD6 by Thomas Hodanek (Graz University of Technology, Austria)
   
Security of Generalized Tandem-DM by Ewan Fleischmann, Michael Gorski, and Stefan Lucks (Bauhaus-University Weimar, Germany)
  12:40-13:40 Lunch break
  13.40-15.10 Session "Block Ciphers II" (chair: Ludovic Perret)
   
Cryptanalysis of C2 by Julia Borghoff, Lars R. Knudsen, Gregor Leander, Krystian Matusiewicz (DTU Mathematics, Technical University of Denmark,Denmark)
   
Attacking Reduced Rounds of the ARIA Block Cipher by Ewan Fleischmann, Michael Gorski, and Stefan Lucks (Bauhaus-University Weimar, Germany)
   
Algebraic-Differential Cryptanalysis of DES by Jean-Charles Faugere, Ludovic Perret, and Pierre--Jean Spaenlehauer (UPMC, Univ Paris 06, LIP6 INRIA, Centre Paris-Rocquencourt, SALSA Project CNRS, France)
  15:10-15:40 Coffee break
  15.40-17.25 Session "Privacy, MQ, and Attributes" (chair: Mario Lamberger)
   
Authenticating with Attributes by Dalia Khader (University of Bath, UK)
   
From MQ to MQQ Cryptography:Weaknesses and New Solutions by Rohit Ahlawat, Kanika Gupta, Saibal K. Pal (University of Delhi, India)
   
An Improvement of Privacy-Preserving Scheme Based on Random Substitutions by Ju-Sung Kang (Department of Mathematics, Kookmin University, Korea)