Office
Phone:
0090 312 210 3789
Email: cihangir (at) metu (dot) edu (dot) tr
Postal Address:
Cihangir Tezcan
Orta Doğu Teknik Üniversitesi
Enformatik Enstitüsü A-219
Ankara TURKEY
I
am an Assistant Professor at
Department of Cyber Security,
Informatics Institute, Middle East Technical University (METU) at Ankara,
Turkey. I left Department of Mathematics
of METU and Ecole
Polytechnique Federale de Lausanne (EPFL) and RUHR Universität Bochum
(RUB) so I am no longer using my
email and postal addresses at Germany and
Switzerland.

20.08.2020: I just finished a new drawing based on an earlier
sketch of mine (The Dragonlance)
Thesis Students
8. Emrah Tufan (2019 -
2020) Thesis: Anomaly-Based
Intrusion Detection using Machine Learning: A Case Study on Probing Attacks
MSc degree awarded on 28th of July 2020, Department of Cyber Security
7. Aslı Başak Civek (2019 -
Present) Thesis: Cryptanalysis of NIST's Lightweight
Cryptography Standardization Candidates Department of
Cyber Security
6.
Burak Çelik (2017-2019)
Thesis: Optimization of Advanced Encryption Standard on CUDA Devices
MSc degree awarded on 4th of September 2019, Department of Cyber Security
5. Merve Öğünç
(2016-2018) Thesis: Differential
Cryptanalysis of LBLOCK using Differential Factors MSc
degree awarded on 7th of December 2018,
Department of Cryptography
4. Galip
Oral Okan (2017-2018) Thesis: LYNXTUN
MSc degree awarded on 3rd of September 2018, Department of Cyber
Security
3. Asuman Şenol (2016-2017)
Thesis:
Improved Differential
Attacks on RECTANGLE MSc degree awarded on 7th August 2017,
Department of Cyber Security
2.
Erol Doğan (2016-2017) Thesis:
Differential Factors and
Differential Cryptanalysis of Block Cipher PRIDE MSc degree
awarded on 7th July 2017, Department of Cyber Security
1.
Rusydi Hasan Makarim (2013-2014)
Thesis: Relating Undisturbed Bits to Other Properties of S-boxes MSc degree awarded on 30th June 2014,
Department of Cryptography
Program Committee Member
2020: ICISSP
2020 2019: ICISSP
2019, ICCT 2019 2018:
SIN'18, ICISSP 2018,
ISCTURKEY 2018 2017:
SIN'17, ICISSP 2017,
ISCTURKEY 2017,
ICCT 2017 2016:
SIN'16,
ICISSP 2016,
ISCTURKEY 2016
2015: SIN'15,
ICISSP 2015,
ISCTURKEY 2015
2014: SIN'14
2013: SIN'13
Journal Editor
-
International
Journal of Advanced Research in Computer and Information Security (2016
- 2018)
Organizing
Committee Member
2013:
ISCTURKEY 2013,
Ankara Cryptology Seminars
Conference Refereeing
2018:
EUROCRYPT 2018 2016:
CHES 2016
2015:
SAC 2015,
Latincrypt 2015,
WCC 2015,
CT-RSA 2015,
FSE 2015 2011:
Lightsec 2011
Journal Refereeing
- Creative Education - Designs, Codes, and
Cryptography - IET Circuits, Devices & Systems
-
IET
Information Security - International Journal of Sensors, Wireless
Communications and Control -
Security and Communication Networks -
The Computer Journal
26 February 2018: Although I cryptanalyzed ciphers designed
by others all this time, for the first time in my life, as a part of my
research at RUB with Gregor Leander, I designed a block cipher. Silent
Encryption Decryption Algorithm is the first cipher that is designed specifically for GPU
architecture. Click here for the SILENT cipher page.
03 April 2017: I am currently on leave until 2018. I
am doing post-doctoral research at RUHR Universitat Bochum, Germany with
Gregor Leander's Symmetric Cryptography Group.
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). During my PhD
studies at EPFL 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.
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