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Office Phone: 0090 312 210 50 16
Email: cihangir (at) metu (dot) edu (dot) tr

Postal Address:
Dr. Cihangir Tezcan
Orta Doğu Teknik Üniversitesi

Fen-Edebiyat Fakültesi Dekanlığı

I currently I hold a permanent researcher position at Department of Mathematics, Middle East Technical University at Ankara, Turkey. I am also an affiliated faculty at Department of Cyber Security, Institute of Informatics and Department of Cryptography, Institute of Applied Mathematics. I have left Ecole Polytechnique Federale de Lausanne (EPFL) and I am no longer using my email adress at EPFL.

During my MS and PhD studies, I focused mainly on block cipher cryptanalysis and I discovered the Improbable Differential Cryptanalysis. I provided the best known attacks on the block ciphers HIGHT (standardized at South Korea), CLEFIA (developed by SONY Corporation), and SERPENT (AES candidate). I visited EPFL in 2010 for 1 year and I did reasearch on provable security under the supervision of Prof. Serge Vaudenay and on GHS attack and genus 2 curves under the supervision of Prof. Arjen Lenstra.

Program Committee Member

2017: ICISSP 2017
2015: SIN'15, ICISSP 2015, ISCTURKEY 2015
2014: SIN'14
2013: SIN'13

 Organizing Committee Member

2013: ISCTURKEY 2013, Ankara Cryptology Seminars

Conference Refereeing

CHES 2016
2015: SAC 2015, Latincrypt 2015, WCC 2015, CT-RSA 2015, FSE 2015
2011: Lightsec 2011

Journal Refereeing

IET Information Security
- The Computer Journal
- Security and Communication Networks


- Merve Öğünç, 2015-Present, MSc
- Rusydi Hasan Makarim, 2013-2014, Thesis: Relating Undisturbed Bits to Other Properties of S-boxes, MSc degree awarded on 30th June 2014


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