Homepage of Christian Schaffner

Jump to: news & radio & podcasts, invited, workshop , seminar, other.

News & Radio & Podcasts:

Live radio interview for Business AM
Quantum-veilige cryptografie
17 April 2023
Available media: The Morning Drive 17/04 (starting from 14:00), MP3 file

Podcast interview for Met nerds om tafel
Quantumcomputers en cryptografie
26 January 2023
Available media: podcast ,

Quotes in FD article
Frans-Nederlands bedrijf krijgt $100 mln voor ontwikkeling commerciële kwantumcomputer
24 Jan 2023
Available media: FD article, PDF version

Live radio interview for BNR Digitaal
Onze gevoeligste informatie is vaak versleuteld, maar is die bescherming ook bestand tegen ultrakrachtige quantumcomputers?
6 October 2021
Available media: BNR Website

Quotes in Technisch Weekblad
De vlag gaat uit voor Amsterdamse quantumtech
22 July 2021
Available media: article in TW.nl

Panelist at Betabreak by SPUI25
Entropy: from chaos to life
15 June 2021
Available media:

Podcast interview for BNR De technoloog
Quantumsoftware, een pril vak dat exponentieel kan groeien
3 June 2021
Available media: BNR Website

Quotes in Financieel Dagblad
Ondanks debacle TU Delft bouwen kwantumbedrijven 'keihard door'
1 March 2021
Available media: FD article, PDF version

Live radio interview for BNR Digitaal
Ad Blockers en Quantum Supremacy
25 September 2019
Available media: (starting at 10m55s) BNR Website, MP3 file

Podcast interview for BNR Cryptocast
Hoe beschermen we bitcoin tegen de quantumcomputer?
31 October 2019
Available media: BNR Website,

Invited talks and lectures:

Invited Speaker at the QSI spring school on Post-Quantum Cryptography 2024
Quantum Random Oracles
Porto, Portugal, 12 March 2024
Available files:

Invited Speaker at the teacher's meeting of the Quantum Quest 2023
De Quantumcomputer in vogelvlucht
Online, 14 September 2023
Available files:

Invited talk at Quantum Valley Munich workshop: Quantum Computing Meets Cyber Security
The Quantum-Random-Oracle Model
Munich, Germany, 12 May 2023
Available files:

Guest lecturer at Amsterdam University College
Quantum Cryptography
Amsterdam University College, Netherlands, 20 March 2023
Available files:

Invited talk at KAT2 workshop
The Quantum-Random-Oracle Model
Eindhoven, The Netherlands, 13 January 2023
Available files:

Guest lecturer at Amsterdam University College
Quantum Cryptography
Amsterdam University College, Netherlands, 26 October 2022
Available files:

Contributed talk at MCH2022
Nuggets of Shannon Information Theory
May Contain Hackers 2022, 25 July 2022
Available files:

Invited seminar talk at Illinois Q Information Science & Technology Center (IQUIST)
Local Simultaneous State Discrimination
Online, 2 November 2021
Available files:

Invited Speaker at the teacher's meeting of the Quantum Quest 2021
De Quantumcomputer in vogelvlucht
Online, 16 September 2021
Available files:

Invited Speaker at IIT Delhi Workshop on Introduction to Quantum Computing
Quantum Cryptography
Online, 25 June 2021
Available files:

Invited Speaker at the teacher's meeting of the Quantum Quest 2020
De Quantumcomputer in vogelvlucht
Online, 17 September 2020
Available files:

Invited talk at i&i conferentie for Dutch computer science teachers
Hoe kun je rekenen met een quantum computer?
Utrecht NL, 7 November 2019
Available files:

Opdrachten:

Invited talk at Landing Festival
Quantum Computing and Cryptography
Berlin, Germany, 3 April 2019
Available files:

Invited talk at Distinguished Lectures in Quantum Software
The Quantum-Random-Oracle Model
Amsterdam, The Netherlands, 14 March 2019
Available files:

Invited Speaker at the student reunion of the Quantum Quest 2018
Quantum Cryptography -- an innovative solution for relationship problems? ;-)
Amsterdam, Netherlands, 20 December 2018
Available files:

Invited talk at Workshop on cryptography in the quantum age
Towards obfuscation using quantum homomorphic encryption
Stellenbosch, South Africa, 6 Nov 2018
Available files:

Invited Tutorial at QCALL Secure Quantum Communications (SQC) School
Quantum Cryptography Beyond QKD
Baiona, Spain, 10/11 May 2018
Available files:

Mindmap: on Github

Guest lecturer at Amsterdam University College
Quantum Cryptography
Amsterdam University College, Netherlands, 19 March 2018
Available files:

Invited Tutorial Speaker at QIP 2018
Quantum Cryptography beyond Key Distribution
Amsterdam, Netherlands, 13 January 2018
Available files:

(without animations).
Mindmap: on Github

Invited Speaker at CWI in bedrijf 17
Quantum Cryptography
Amsterdam, Netherlands, 18 May 2017
Available files:

(without animations).

Invited Speaker at Leve De Wiskunde 2017
Quantum Cryptografie -- een nieuwe oplossing voor relatieproblemen? ;-)
Amsterdam, Netherlands, 7 April 2017

Invited Speaker at ICT Open 2017
Quantum Cryptography
Amersfoort, Netherlands, 21 March 2017
Available files:

(without animations).

Invited Speaker at QuICS seminar
Quantum Homomorphic Encryption for polynomial-sized circuits
QuICS, University of Maryland, USA, 7 March 2017
Available files:

(without animations).

Invited Speaker at Winter'17 QuantumDay@Portland
Quantum Cryptography
Portland, OR, USA, 13 January 2017
Available files:

(without animations).

Invited Speaker at Trustworthy Quantum Computation 2016
Quantum Homomorphic Encryption
Shanghai, China, 29 June 2016
Available files:

(without animations).

Invited Speaker at AwesomeIT 2016
Quantum Cryptography
Amsterdam, 7 April 2016
Available files:

(without animations).

Speaker at Symposium on the Work of Ivan Damgård, Aarhus 2016
Quantum homomorphic encryption for polynomial-sized circuits
University of Aarhus, Denmark, 1 April 2016
Available files:

(without animations).

Invited speaker at Focus Session of Physics@FOM, Veldhoven 2016
Quantum Cryptography
Focus Session "The physics of quantum information", Veldhoven, 20 January 2016
Available files:

(without animations).

Contributed talk at 32C3
Quantum Cryptography
32. Chaos Communication Congress, 28 December 2015
Available files:

(without animations)

Guest lecture about quantum cryptography for the Master System & Network Engineering
Quantum Cryptography
University of Amsterdam, 16 November 2015
Available files:

(without animations).

Invited speaker at Workshop on Quantum Cryptography and Quantum Information
Semantic Security and Indistinguishability in the Quantum World
University of Aarhus, Denmark, 19 October 2015
Available files:

(slides by Tommaso Gagliardoni)

Invited speaker at DESDA symposium 2015 about Quantum Information
Quantum Cryptography
University of Nijmegen, 5 June 2015
Available files:

(without animations).

Invited speaker at Advances in Quantum Cryptography Workshop
Position-Based Quantum Cryptography
Institut Henri Poincare, Paris, France, March 23-24, 2015
Available files:

.

Guest lecture at cryptografie for bachelor students
Quantum Cryptography
University of Amsterdam, 10 March 2015
Available files:

(without animations).

Guest lecturer at Amsterdam University College
Quantum Cryptography
Amsterdam University College, Netherlands, 23 September 2013
Amsterdam University College, Netherlands, 24 February 2014
Available files:

Invited speaker at Tsinghua-Aarhus CTIC Workshop on Quantum Information Science
Position-Based Quantum Cryptography
Tsinghua University, Beijing, China, May 21-24, 2012

Invited speaker at Workshop on Post-Quantum Security Models
Telecom ParisTech, Paris, France, October 11-12, 2010
Quantum Cryptography Beyond Key Distribution
covering the state of the art of the noisy-storage model and position-based quantum cryptography
Available files:

Invited speaker at Workshop on Theory and Realisation of Practical Quantum Key Distribution
Institute for Quantum Computing, Unversity of Waterloo, June 14-17, 2010
Quantum Cryptography Beyond Key Distribution
Available files:

Invited speaker at Workshop on Classical and Quantum Information Assurance
Schloss Dagstuhl, Germany, July 26-31, 2009
Limited-Quantum-Storage Cryptography: From Theory to Practice
Available files:

(without animations).

Invited speaker at Cryptography Workshop
Schloss Dagstuhl, Germany, September 17-21, 2007
A Tight High-Order Entropic Uncertainty Relation with Applications
Available files:

(requires TeX4PPT plugin),

(without animations).

Invited speaker at Tropical QKD, a workshop on Theory and Realisation of Practical Quantum Key Distribution
Institute for Quantum Computing, Waterloo, Canada, June 11-14, 2007
A Tight High-Order Entropic Uncertainty Relation with an Application to Quantum Key Distribution

Invited speaker at QIP 2006, the 9th workshop on Quantum Information Processing
Paris, January 16-20, 2006
Cryptography in the Bounded Quantum-Storage Model
Available files:

(requires TexPoint plugin),

(without animations).

Conference talks:

QCrypt 2016, 6th international conference on quantum cryptography
Washington DC, September 12-16, 2016
Computational Security of Quantum Encryption

(without animations).

TQC 2014, 9th Conference on the Theory of Quantum Computation, Communication and Cryptography
Singapore, May 21-23, 2014
On the Parallel Repetition of Multi-Player Games: The No-Signaling Case

(zipped Keynote)

ASIACRYPT 2009, the 15th Annual International Conference on the Theory and Application of Cryptology and Information Security
Tokyo, Japan, December 6-10, 2009
On the Power of Two-Party Cryptography

TCC 2009, the 6th Theory of Cryptography Conference
San Francisco, CA, USA, March 15-17, 2009
Composing Quantum Protocols in a Classical Environment

QIP 2009, the 12th workshop on Quantum Information Processing
Santa Fe, New Mexico, January 12-16, 2009
The Operational Meaning of Min- and Max-Entropy

TCC 2008, the 5th Theory of Cryptography Conference
New York University, USA, March 19-21, 2008
Randomness Extraction via Delta-Biased Masking in the Presence of a Quantum Adversary
Available file:

(PowerPoint 2007)

QIP 2008, the 11th workshop on Quantum Information Processing
New Delhi, India, December 17-21, 2007
A Tight High-Order Entropic Uncertainty Relation with Applications
Secure Identification and QKD in the Bounded-Quantum-Storage Model
Available file:

CRYPTO 2007, 27th Annual International Cryptology Conference
Santa Barbara, CA, USA, August 19-23, 2007
A Tight High-Order Entropic Uncertainty Relation with Applications

CRYPTO 2006, 26th Annual International Cryptology Conference
Santa Barbara, CA, USA, August 20-24, 2006
Oblivious Transfer and Linear Functions
Available files:

(requires TeX4PPT plugin),

(without animations).

FOCS 2005, 46th Annual IEEE Symposium on Foundations of Computer Science
Pittsburgh, October 22-25, 2005
Cryptography in the Bounded Quantum-Storage Model
Available files:

(requires TexPoint plugin).

Workshop talks:

Workshop on Cryptography from Storage Imperfections
Caltech, Pasadena, USA, March 20-22, 2010
Cryptographic Primitives and the Noisy-Storage Model
Available file:

(PowerPoint 2007)
Simple Protocols for Oblivious Transfer and Secure Identification in the Noisy-Storage Model
Available file:

(PowerPoint 2007)

Workshop: Practical Applications of New Research in Cryptography
Sabanci University, Istanbul, Turkey, April 18, 2008
Secure Identification Using Quantum Communication
Available files:

(without animations).

McGill Workshop on Identification and Mutually Unbiased Bases
Bellairs Research Institute, Barbados, March 4-11, 2007
Randomness Extraction via Delta-Biased Masking in the Presence of a Quantum Attacker

ECRYPT Workshop on Models for Cryptographic Protocols
BRICS, University of Aarhus, July 31 - August 1, 2006
Information-Theoretic Conditions for Two-Party Secure Function Evaluation

McGill Workshop on Cryptography in the Bounded Storage Model
Bellairs Research Institute, Barbados, March 5-12, 2006
Cryptography in the Bounded Quantum-Storage Model

Seminar talks:

Quantum Cryptography for Dummies
Simons Insitute for Theoretical Computer Science, Berkeley, California, US. 17 April 2020
Quantum Cryptography (Beyond QKD)
Available files:

Quantum Cryptography for Dummies
Simons Insitute for Theoretical Computer Science, Berkeley, California, US. 22 April 2020
Position-based Quantum Cryptography
Available files:

The Quantum Wave of Computing seminar
Simons Insitute for Theoretical Computer Science, Berkeley, California, US. 17 March 2020
Secure Multi-Party Quantum Computation with a Dishonest Majority
Available files:

General math colloquium
Korteweg de Vries institute, University of Amsterdam. April 5, 2017
Homomorphic Encryption of Quantum Data
Available files:

QuSoft seminar
January 22, 2016
Quantum Cryptography
Available files:

Logic, Language and Computation Seminar
Institute for Logic, Language and Computation, University of Amsterdam, Netherlands, September 21, 2015
Quantum Cryptography
Available files:

Institute for Logic, Language and Computation, University of Amsterdam, Netherlands, 30 October, 2017
Quantum Cryptography
Available files:

Institute for Logic, Language and Computation, University of Amsterdam, Netherlands, 24 September, 2018
Quantum Cryptography
Available files:

ENS Crypto seminaire
Ecole Normale Supérieure, Paris, France, February 27, 2012
Random Oracles in a Quantum World
Available files:

Logic Tea
Institute for Logic, Language and Computation, University of Amsterdam, Netherlands, February 14, 2012
Position-Based Quantum Cryptography
Available files:

Quantum Information Seminar
Physikzentrum der RWTH Aachen, Germany, December 16, 2010
Position-Based Quantum Cryptography: Impossibilities and Constructions

Computing Science Colloquium, AlGORITMe series
Center for Algorithmic Systems - Utrecht University, The Netherlands, November 19, 2010
Position-Based Quantum Cryptography: Impossibilities and Constructions

Crypto Seminar
University of Aarhus, November 11, 2010
Position-Based Quantum Cryptography: Impossibilities and Constructions

Eindhoven Institute for the Protection of Systems and Information
Eindhoven, The Netherlands, November 3, 2010
Position-Based Quantum Cryptography: Impossibilities and Constructions
Available files:

Caltech IQI Seminar
Caltech, Pasadena, CA, USA, January 27, 2009
The Operational Meaning of Min- and Max-Entropy

Quantum Information Theory Seminar
LMU Munich, Munich, Germany, December 12, 2008
The Operational Meaning of Min- and Max-Entropy

Toronto Quantum Information Seminars
University of Toronto, August, 2008
The Operational Meaning of Min- and Max-Entropy
Available files:

Crypto Seminar
BRICS, University of Aarhus, February, 2008
Cryptography from Noisy Storage
A Tight High-Order Entropic Uncertainty Relation with Applications Secure Identification
QKD in the Bounded-Quantum-Storage Model

CWI PNA6 Seminar
CWI Amsterdam, The Netherlands, November 29, 2006
A Tight High-Order Entropic Uncertainty Relation with an Application to Quantum Key Distribution

Theory Devision Seminar
Max-Planck Institute for Quantum Optics, Munich, Germany, Oct 11, 2006
A Tight High-Order Entropic Uncertainty Relation and Applications in the Bounded Quantum-Storage Model

Quantum Information and Crypto group seminar
ETH Zürich, Switzerland, Oct 3, 2006
A Tight High-Order Entropic Uncertainty Relation with Applications in the Bounded Quantum-Storage Model

Centre for Quantum Computing
University of Cambridge, UK, Sep 13, 2006
A Tight High-Order Entropic Uncertainty Relation with Applications in the Bounded Quantum-Storage Model

Crypto Seminar
BRICS, University of Aarhus, May 21, 2006
A Tight High-Order Entropic Uncertainty Relation with Applications in the Bounded Quantum-Storage Model

Crypto Seminar
BRICS, University of Aarhus, May 19, 2006
Oblivious Transfer and Linear Functions

Crypto Seminar
BRICS, University of Aarhus, May 10, 2006
Information-Theoretic Conditions for Two-Party Secure Function Evaluation

Laboratoire de Recherche en Informatique
Université Paris-Sud, Orsay, France, April 27, 2006
A Tight High-Order Entropic Uncertainty Relation and Applications in the Bounded Quantum-Storage Model

Université de Montréal, July 18, 2005
McGill University Montreal, June 29, 2005
BRICS, University of Aarhus, February 25, 2005
Cryptography in the Bounded Quantum-Storage Model

BRICS, University of Aarhus, April 15 & 18, 2005
The coin-flipping business

Other talks:

Quantum Cryptography (Beyond QKD)
Reading group "Quantum for Dummies" at Simons Institute, April 2020
Part 1: Available files:

Position-Based Quantum Cryptography
Part 2: Available files:

Quantum Cryptography
Visit of BSc Informatiewetenschappen, ILLC, University of Amsterdam, 2 November 2015
Available file:

Visit of BSc Informatiewetenschappen, ILLC, University of Amsterdam, 31 October 2017
Available file:

Course Pitches: Information Theory and Crypto
Master of Logic, University of Amsterdam, 11 October 2015
Available file:

Master of Logic, University of Amsterdam, 1 September 2017
Available file:

The Academic Mentor System In the Master of Logic
ILLC, University of Amsterdam, 28 August 2015
Available file:

ILLC, University of Amsterdam, 2 September 2016
Available file:

ILLC, University of Amsterdam, 1 September 2017
Available file:

PhD defence
University of Aarhus, Denmark, April 27, 2007
Cryptography in the Bounded-Quantum-Storage Model
Available file:

ECRYPT Autumn School on Unconditional Security in Cryptographic Protocols
Bertinoro, Italy, October 16-21, 2005
Cryptography in the Bounded Quantum-Storage Model

CS-QIC 2005, Canadian Grad Student Conference
University of Calgary, August 8-12, 2005
Cryptography in the Bounded Quantum-Storage Model

NAT-årsfest, yearly anniversary of the Natural Science Faculty of the University of Aarhus
Århus, June 3, 2005
Quantum Bit Commitment
Available files: