Center for the Theory of Interactive Computation



CTIC is a Sino-Danish research center that starts operations on April 1st, 2011. The center is a three-year collaboration between the Computer Science Department at Aarhus University, Denmark and ITCS, Tsinghua University, Beijing, China. Center leaders are Andrew Chi-Chih Yao, Tsinghua, and Peter Bro Miltersen, Aarhus.

The focus areas of the center are computational complexity theory, cryptography, quantum information theory, and algorithmic game theory.

CTIC Center website


Ivan Damgaard awarded Order of the Dannebrog

2016.09.23Professor Ivan Damgaard has been awarded the honourable Order of the Dannebrog by HM Queen Margrethe II.

Best student paper award at the 25th USENIX Security Symposium

2016.08.15Jesper Madsen (master student) and Irene Giacomelli (PhD student) received the Best Student Paper Award at the 25th USENIX Security Symposium for their paper "ZKBoo: Faster Zero-Knowledge for Boolean Circuits" which they wrote in collaboration with Claudio Orlandi. Congratulations!

From basic research to applicable spin-off technology

2016.06.30The CFEM project is coming to an end, and on July 7, Center for the Foundations of Electronic Markets hosts a reception for partners and others interested. Ivan Bjerre Damgård, Professor at the Department of Computer Science at Aarhus University and one of the Center Managers of CFEM, sums up the highlights of the project.

Theory and Practice of Secure Multiparty Computation

2016.03.08From May 30 to June 3, 2016, CFEM and CTIC are hosting a workshop on the theory and practice of MPC, bringing together experts in all aspects of the subject. The workshop is organized in collaboration with the MPCPRO project. The workshop is open for all participants but the target audience is PhD students, postdocs and faculty members.

Symposium on the Work of Ivan Damgård

2016.02.25Ivan Damgård is Denmark's Godfather of cryptography! Ivan's research has made a major impact on the crypto scene worldwide, making him one of the most prolific and influential authors in the cryptographic research community. This 2-day symposium will be covering all aspects of modern cryptography to celebrate the work of Ivan Damgård on account of his 60th birthday. 

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Upcoming Events @ CTIC

Fri 07 Dec
15:15-16:00 | Building 5335, room 016 (Peter Bøgh Auditorium)
CS Colloquium - Martin Møller: A Scaled Conjugate Gradient Algorithm for Fast Supervised Learning
I would like to invite you to celebrate a 25 year old high-impact paper from Department of Computer Science, AU. To my knowledge, the paper is probably the most ever cited single research result paper written by a single author, a then PhD student, from the Department of Computer Science, AU. It has been cited 3500+ times over the last 25 years, with an increasing frequency, this year to date alone 250+ citations. The paper also shows that the Department of Computer Science was an early mover in the hyped area of Machine Learning, since the topic of the paper is on algorithms for supervised learning. I have asked the author to give a talk based on the paper, and I have also asked him to talk about what his research result has been/is used for today through some examples. The talk will be followed by a little reception, as a warm up to the Katrinebjerg Christmas Lunch, taking place later the same day. See you at the talk! Kaj Grønbæk, Head of Department, Professor.
Wed 12 Dec
13:00-15:00 | Nygaard-395 (5335-395). Åbogade 34, 8200 Aarhus N
PhD defense by Morten Krogh-Jespersen: Towards Modular Reasoning for Stateful and Concurrent Programs

Project website

Center Leader

Ivan Bjerre Damgård

H bldg. 5335, 277
P +4587156258
P +4520837137

Chinese center leader

Chinese center leader Andrew Chi-Chih Yao, Tsinghua University, China



Associated people

Financed by

The Danish National Research Foundation



Grant for CS activities

15.000.000 DKK