This page contains the list of (invited) talks I gave on different occasions.


Talks

  • Pseudorandom Signatures.
    CryptoForma Network, 7th Meeting, Edinburgh, UK, 01/03/2012

  • Group Signature with Constant Revocation Costs for Signers and Verifiers.
    10th International Conference on Cryptology and Network Security 2011, Sanya, China, 11/12/2011

  • Non-Interactive and Re-Usable UC String Commitments with Adaptive Security.
    ASIACRYPT 2011, Seoul, Korea, 07/12/2011 [PDF]
    Invited talk. Crypto Seminar, IBM Research T.J. Watson, NY, USA, 01/12/2011

  • Social Authentication with Privacy.
    Invited talk. Royal Holloway, University of London, UK, 23/06/2011

  • Privacy-Oriented Cryptography for Social Clouds.
    Invited talk. LACS Seminar, University of Luxembourg, 19/05/2011

  • Cryptographic Approach to Private Social Clouds.
    Invited talk. Séminaire de Cryptographie, CELAR/Université de Rennes 1, Rennes, France, 06/05/2011

  • Practical Affiliation-Hiding Authentication from Improved Polynomial Interpolation.
    ACM Symposium on Information, Computer and Communications Security (ASIACCS 2011), Hong Kong, 24/03/2011 [PDF]

  • Cryptographic Treatment of Private User Profiles.
    15th International Conference on Financial Cryptography and Data Security (FC 2011), RLCPS, St. Lucia, 04/03/2011 [PDF]

  • Affiliation-Hiding Authentication.
    Invited Talk. Royal Holloway, University of London, UK 21/10/2010

  • Privacy via Group Authentication.
    Invited Talk. Goethe University of Frankfurt, Germany 01/09/2010

  • Affiliation-Hiding Key Exchange with Untrusted Group Authorities.
    8th International Conference on Applied Cryptography and Network Security (ACNS 2010), Beijing, China, 23/06/2010 [PDF]

  • Flexible Group Key Exchange with On-Demand Computation of Subgroup Keys.
    AFRICACRYPT 2010, Stellenbosch, South Africa, 05/05/2010 [PDF]

  • Privacy-Preserving Admission to Mobile Peer-to-Peer Groups.
    8th IEEE Intl. Conference on Pervasive Computing and Communications, MP2P Workshop, Mannheim, Germany, 02/04/2010 [PDF]

  • Fully Robust Tree-Diffie-Hellman Group Key Exchange.
    8th International Conference on Cryptology and Network Security, Kanazawa, Ishikawa, Japan, 14/12/2009 [PDF]

  • Parameterwahl für sichere zeitgemäße Verschlüsselung.
    Invited Talk. CAST e.V. Workshop "Datenschutz", Darmstadt, Germany, 29/10/2009 [PDF]

  • Securing Roaming Access Inside Wireless Mesh Networks.
    10th International Workshop on Information Security Applications, Busan, South Korea, 27/08/2009 [PDF]

  • Group Key Exchange Enabling On-Demand Derivation of Peer-to-Peer Keys.
    7th International Conference on Applied Cryptography and Network Security, Paris-Rocquencourt, France, 02/06/2009 [PDF]

  • Non-Interactive Computation of Pairwise Keys in Group Diffie-Hellman Protocols.
    Invited Talk. Workshop on Cryptographic Protocols and Public-Key Cryptography, BiCi, University Residential Center, Bertinoro (Forlì-Cesena), Italy 26/05/2009

  • Authenticated Wireless Roaming via Tunnels.
    Invited talk. GI/HGI Wireless Security 2009, Bochum, Germany, 13/03/2009 [PDF]

  • The Concept of Wireless Roaming via Tunnels: Authentication and Key Establishment Issues.
    Invited talk. BCRYPT PhD Day, Leuven, Belgium, 13/10/2008

  • Fully Robust Group Key Exchange in the Presence of Opening Attacks.
    Invited talk. ACAC Seminar, Centre for Advanced Computing - Algorithms and Cryptography, Macquarie University, Sydney, Australia, 11/07/2008

  • Enforcing User-Aware Browser-Based Mutual Authentication with Strong Locked Same Origin Policy.
    13th Australasian Conference on Information Security and Privacy, Wollongong, Australia, 07/07/2008

  • Provably Secure Browser-Based User-Aware Mutual Authentication over TLS. ACM Symposium on Information, Computer and Communications Security, Tokyo, Japan, 20/03/2008

  • Securing Group Key Exchange against Strong Corruptions.
    ACM Symposium on Information, Computer and Communications Security, Tokyo, Japan, 19/03/2008

  • On Security Models and Compilers for Group Key Exchange Protocols.
    2nd International Workshop on Security, Nara, Japan, 30/10/2007

  • Provably Secure Framework for Information Aggregation in Sensor Networks.
    7th International Conference on Computational Science and Applications, Kuala Lumpur, Malaysia, 27/08/2007

  • Malicious Participants in Group Key Exchange: Key Control and Contributiveness in the Shadow of Trust.
    4th International Conference on Autonomic and Trusted Computing, Hong Kong, China, 13/07/2007

  • Browser-based Authentication Protocols for Naive Users.
    Western European Workshop on Research in Cryptology, Bochum, Germany, 06/07/2007

  • Security-Enhancing Compilers for Group Key Exchange Protocols.
    Invited talk. UCL Crypto Group Seminar, Louvain-la-Neuve, Belgium, 20/06/2007

  • Strong Corruptions in Group Key Exchange.
    Invited talk. Workshop on Cryptographic Protocols, BiCi, University Residential Center, Bertinoro (Forli-Cesena), Italy 08/03/2007

  • Kryptographie und Datensicherheit.
    Tutorial. Im Rahmen des Weiterbildungsstudiums "IT-Sicherheit- Administration und Sicherheit von IT-Systemen und -Netzwerken", Ruhr-Universität Bochum, 10/02/2007

  • A Security Model for Group Key Exchange.
    ECRYPT-PROVILAB Meeting, Horst Görtz Institute for IT Security, Bochum, Germany 05/10/2006

  • Group Signatures for Federated Systems. Invited talk. Séminaire de Cryptographie, CELAR/Université de Rennes 1, Rennes, France 02/06/2006

  • New Paradigms for Group Signatures in Federated Systems.
    4. Kryptotag, Horst Görtz Institute for IT Security, Bochum, Germany 11/05/2006 [PDF]

  • Property-Based Taming of Lying Mobile Nodes.
    IEEE International Workshop on Trusted and Autonomic Computing Systems, Vienna, Austria, 19/04/2006

  • Linkable Democratic Group Signatures.
    2nd Information Security Practice and Experience Conference, Hangzhou, China, 13/04/2006

  • Democratic Group Signatures.
    ACM Symposium on Information, Computer and Communications Security, Taipei, Taiwan, 21/03/2006

  • Kryptographie und Datensicherheit.
    Tutorial. Im Rahmen des Weiterbildungsstudiums "IT-Sicherheit- Administration und Sicherheit von IT-Systemen und -Netzwerken", Ruhr-Universität Bochum, 17/02/2006

  • CGKA Protocols, Revisited for Mobile Ad-Hoc Groups.
    International Workshop on Wireless and Sensor Networks Security, Washington, USA, 07/11/2005

  • Key Agreement for Heterogeneous Mobile Ad-Hoc Groups.
    International Workshop on Security in Networks and Distributed Systems, Fukuoka, Japan, 21/07/2005

  • Binary Trees in Group Communication Security.
    Invited talk. Post-graduate seminar "Algebra and Geometry", Chair for Algebra and Geometry, Ruhr University Bochum, Germany, 17/12/2005

  • Pseudonym Generation Scheme for Ad-Hoc Group Communication.
    European Workshop on Security in Ad-Hoc and Sensor Networks, Heidelberg, Germany, 05/08/2004