Curriculum Vitae of Christian Schaffner

Curriculum Vitae of Christian Schaffner 

Personal 

Information 

Contact 

Information 

Research 

Interests 

Christian Schaffner 

born on February 25, 1978, in Chur, Switzerland 

Citizen of Switzerland 

unmarried, no children 

CWI - Centrum Wiskunde & Informatica fon: +31 20 592 4232 

Science Park 123 fax: +31 20 592 4312 

1098 XG Amsterdam email: c.schaffner@cwi.nl 

The Netherlands web: www.brics.dk/~chris 

August 5, 2009 

Quantum Cryptography, Cryptographic Protocols, (Quantum) Information Theory, 

Information-Theoretic Security 

Education Post-Doc in Computer Science 2007 – 

Centrum voor Wiskunde en Informatica (CWI), Amsterdam, The Netherlands 

in the group of Harry Buhrman 

Awards and 

Scholarships 

Publications 

(available from 

homepage) 

PhD in Computer Science 2004 – 2007 

BRICS International PhD School, DAIMI, University of ˚Arhus, Denmark 

PhD advisors: Louis Salvail, Ivan Damg˚ard 

PhD Thesis: Cryptography in the Bounded-Quantum-Storage Model. 

Diploma Studies in Mathematics 1998 – 2003 

ETH Zürich, Switzerland 

Final grade: 5.8 (of 6) 

Specialisations: Stochastics, Theoretical Computer Science 

Diploma Thesis advisors: Ueli M. Maurer, Renato Renner 

Diploma Thesis: Secret-Key Agreement Information-Theoretically Secure Against Active 

Adversaries. 

Exchange Semester 02/2001 – 07/2001 

Université Paris-Sud, Orsay (Paris XI), France 

• Diploma with distinction from ETH Zürich, 2003 

• Châtelain-Fond of ETH Zürich scholarship, 2001 – 2003 

• Foundation Moriz and Elsa von Kufner scholarship, 2000 – 2003 

Conference articles 

1. Ivan Damg˚ard, Serge Fehr, Carolin Lunemann, Louis Salvail, Christian Schaffner 

Improving the Security of Quantum Protocols via Commit-and-Open 

to appear at CRYPTO 2009 

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2. Serge Fehr, Christian Schaffner 

Composing Quantum Protocols in a Classical Environment, In Theory of Cryptography 

– TCC 2009, pages 350–367, 2009 

3. Serge Fehr, Christian Schaffner 

Randomness Extraction via δ-Biased Masking in the Presence of a Quantum Attacker, 

In Theory of Cryptography – TCC 2008, pages 465–481, 2008 

4. Ivan Damg˚ard, Serge Fehr, Louis Salvail, Christian Schaffner 

Secure Identification and QKD in the Bounded-Quantum-Storage Model, In Advances 

in Cryptology – CRYPTO 2007, pages 342–359, 2007 

5. Ivan Damg˚ard, Serge Fehr, Renato Renner, Louis Salvail, Christian Schaffner 

A Tight High-Order Entropic Uncertainty Relation With Applications, In Advances 

in Cryptology – CRYPTO 2007, pages 360–378, 2007 


Oblivious Transfer and Linear Functions 

In Advances in Cryptology – CRYPTO 2006, pages 427–444, 2006 

7. Claude Crépeau, George Savvides, Christian Schaffner, Jürg Wullschleger 

Information-Theoretic Conditions for Two-Party Secure Function Evaluation 

In Advances in Cryptology – EUROCRYPT 2006, pages 538–554, 2006 


Cryptography in the Bounded-Quantum-Storage Model 

In 46th Symposium on Foundations of Computer Science (FOCS), pages 449–458, 

2005 

Preprints 

9. Louis Salvail, Christian Schaffner, Miroslava Sotáková 

On the Power of Two-Party Quantum Cryptography 

submitted, 2008 

Journals 

11. Christian Schaffner, Barbara Terhal, Stephanie Wehner 

Robust Cryptography in the Noisy-Quantum-Storage Model 

to appear in Quantum Information & Computation (QIC), 2009 

12. Robert König, Renato Renner, Christian Schaffner 

The Operational Meaning of Min- and Max-Entropy 

to appear in IEEE Transactions on Information Theory, 2009 

13. Stephanie Wehner, Christian Schaffner, Barbara Terhal 

Practical Cryptography from Noisy Storage 

In Physical Review Letters (PRL), volume 100, 220502 (2008) 



In SIAM Journal of Computing, volume 37, number 6, pages 1865–1890, 2008 

2

Theses 

14. Christian Schaffner 


PhD Thesis, BRICS, University of ˚Arhus, 2007 



PhD Progress Report, BRICS, University of ˚Arhus, 2005 


Secret-Key Agreement Information-Theoretically Secure Against Active Adversaries 

Diploma Thesis, ETH Zürich, 2003 

Presentations Invited Talks 

• Workshop on Classical and Quantum Information Assurance 

Dagstuhl, Germany, July 26–31, 2009 

• Cryptography Workshop 

Dagstuhl, Germany, September 17–21, 2007 

• Tropical QKD, Theory and Realisation of Practical Quantum Key Distribution 

IQC Waterloo, Canada, June 11–14, 2007 

• QIP 2006, 9th workshop on Quantum Information Processing 

Paris, January 16–20, 2006 

Contributed Talks 

• TCC 2009, 6th Theory of Cryptography Conference 

San Francisco, USA, March 15–17, 2009 


Santa Fe, New Mexico, USA, January 12–16, 2009 

• TCC 2008, 5th Theory of Cryptography Conference 

New York, USA, March 19–21, 2008 


Delhi, India, December 17–21, 2007 (2 talks) 

• CRYPTO 2007, 27th Annual International Cryptology Conference 

Santa Barbara, August 19–23, 2007 

• CRYPTO 2006, 26th Annual International Cryptology Conference 

Santa Barbara, August 20–24, 2006 

• FOCS 2005, 46th Annual IEEE Symposium on Foundations of Computer Science 

Pittsburgh, October 22–25, 2005 

Seminar Talks 

• Caltech IQI Seminar, Caltech, Pasadena, CA, USA, 01/2009 

• Quantum Information Group Seminar, LMU München, Germany, 12/2008 

• Crypto Group Seminar, CWI Amsterdam, The Netherlands, 10/2008 

• Toronto Quantum Information Seminar, University of Toronto, Canada, 08/2008 

• BRICS Crypto Seminar, University of ˚Arhus, 02/2008 

• Quantum Group Seminar, CWI Amsterdam, The Netherlands, 11/2006 

• Max-Planck Institute for Quantum Optics, Theory Devision, München, Germany, 10/2006 

• Quantum Information and Crypto Group, ETH Zürich, Switzerland, 10/2006 

• Centre for Quantum Computing, Cambridge, UK, 09/2006 

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Conferences, 

Workshops 

• BRICS Crypto Seminar, University of ˚Arhus, 05/2006, 02/2005, 12/2003 

• Laboratoire de Recherche en Informatique 

Université Paris-Sud, Orsay, France, 04/2006 

• Université de Montréal, Canada, 07/2005 

• McGill University, Montréal, Canada, 06/2005 

Other Talks 

• Workshop: Practical Applications of New Research in Cryptography 

Sabanci University, Istanbul, Turkey, April 18, 2008 

• McGill Workshop on Entangled Games 

Bellairs Research Institute, Barbados, March 9–16, 2008 

• McGill Workshop on Identification and Mutually Unbiased Bases 


• ECRYPT Workshop on Models for Cryptographic Protocols 

BRICS, University of ˚Arhus, Denmark, July 31–August 1, 2006 

• McGill Workshop on Cryptography in the Bounded-Storage Model 


• ECRYPT Autumn School on Unconditional Security in Cryptographic Protocols 

Bertinoro, Italy, October 16–21, 2005 

• CS-QIC 2005, Canadian Grad Student Conference 

University of Calgary, Canada, August 8–12, 2005 

• NAT-˚Arsfest, anniversary of the Natural Science Faculty of the University of ˚Arhus 

˚Arhus, Denmark, June 3, 2005 

• TCC 2005, Rump Session Talk 

MIT, Cambridge, MA, USA, February 9–12, 2005 

(besides the ones listed above) 

• McGill Workshop on Post-Quantum Cryptography 


• Summer School on Game Theory in Computer Science 

BRICS, University of ˚Arhus, Denmark, June 26–30, 2006 

• CRYPTO 2005 

Santa Barbara, CA, USA, August 14–18, 2005 

• Organising committee member of EUROCRYPT 2005 

˚Arhus, Denmark, May 22–26, 2005 

• Nordic Research Training Course in Cryptology and its Applications 

Bergen, Norway, June 10–18, 2004 

Research Visits • 04/2009: Laboratoire de Recherche en Informatique, Orsay, and Télécom Paristech, 

Paris, France 

visiting Loïck Magnin and Anthony Leverrier and the Quantum Information groups 

• 01/2009: Caltech, Pasadena, CA, USA 

visiting Stephanie Wehner, Robert König and the group of John Preskill 

• 12/2008: LMU München, München, Germany 

visiting Matthias Christandl 

• 08/2008: Université de Montréal, QC, Canada 

visiting Louis Salvail 

• 08/2008: University of Toronto, ON, Canada 

visiting the quantum group of Hoi-Kwong Lo, collaborating with Marcus Curty and 

Stephanie Wehner 

4

• 02/2008: University of ˚Arhus, Denmark 

visiting Louis Salvail and Ivan Damg˚ard 

• 06/2007: Institute for Quantum Computing and Perimeter Institute, Waterloo, Canada 

visiting Debbie Leung and Mike Mosca 

• 11/2006: CWI Amsterdam, The Netherlands 

visiting Harry Buhrman and his group 

• 10/2006: Max-Planck Institute for Quantum Optics, Munich, Germany 

visiting the Theory Devision 

• 10/2006: ETH Zürich, Switzerland 

visiting Stefan Wolf and Jürg Wullschleger 

• 09/2006: Centre for Quantum Computing, Cambridge, UK 

visiting Renato Renner 

• 04/2006: Laboratoire de Recherche en Informatique, Orsay, France 

visiting the Quantum Information group 

• 06/2005 – 12/2005: McGill University, Montréal, QC, Canada 

visiting Claude Crépeau 

Program Program Committee member for the cryptography track of RSA 09. 

Committees and Referee for EUROCRYPT 05, CRYPTO 05, PQCrypto 06 (Workshop on Post-Quantum 

Refereeing Cryptography), CRYPTO 06, TCC 07, STACS 07, QIP 08, AFRICACRYPT 08, IEEE 

Information Theory Workshop 08, ICALP 08, ISIT 08, ITW 08, RANDOM 08, SCN 08, 

IEEE Transactions on Information Theory, Journal of Cryptography, Quantum Information 

& Computation. 

Master Student 

Supervision 

Teaching 

Assistantships 

• Søren Fries Skovsen: Visual Secret Sharing, 

Master in Cryptology, University of ˚Arhus, 2005 

at ETH Zürich, Switzerland 

• Summer Semester 2003: Discrete Mathematics for IT students in the 2nd semester, 

Prof. Ueli M. Maurer 

• Winter Semester 2002/03: Complex analysis for Mathematics/Physics students in the 

2nd semester, Prof. Delbaen 

• Summer Semester 2002: Discrete Mathematics for IT students in the 2nd semester, 

Prof. Gutknecht 

• Winter Semester 2001/02: Linear Algebra for IT students in the 1st semester, 

Prof. Gutknecht 

Languages German (mother tongue) 

English, French (fluent written and spoken) 

Dutch (good knowledge), Danish (good knowledge) 

References 1. Harry Buhrman, Professor, University of Amsterdam, Quantum Computing Theme 

Leader at CWI, The Netherlands 

Email: buhrman@cwi.nl 

2. Louis Salvail, Associate Professor, Université de Montréal, QC, Canada 

Email: salvail@iro.umontreal.ca 

5

3. Ivan Damg˚ard, Professor, University of ˚Arhus, Denmark 

Email: ivan@cs.au.dk 

4. Renato Renner, Professor, ETH Zürich, Switzerland 

Email: renner@phys.ethz.ch 

5. Claude Crépeau, Professor, McGill University, Montréal, QC, Canada 

Email: claude.crepeau@mcgill.ca 

6. Ueli M. Maurer, Professor, ETH Zürich, Switzerland 

Email: maurer@inf.ethz.ch 

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Curriculum Vitae of Christian Schaffner

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