- M. Naya-Plasencia, D. Toz, and K. Varıcı, "Rebound Attack on JH42," Proceedings of Asiacrypt 2011, (to appear)
- A. Bogdanov, M. Knezevic, G. Leander, D. Toz, K. Varıcı, and I. Verbauwhede, "SPONGENT: A Lightweight Hash Function," In Cryptographic Hardware and Embedded Systems - CHES 2011, Lecture Notes in Computer Science, B. Preneel, and T. Takagi (eds.), Springer-Verlag, 18 pages, 2011.
- V. Rijmen, D. Toz, and K. Varıcı, "Rebound Attack on Reduced-Round Versions of JH," In Fast Software Encryption, FSE 2010, Lecture Notes in Computer Science 6147, S. Hong, and T. Iwata (eds.), Springer-Verlag, pp. 286-303, 2010.
2009
- J. P. Aumasson, Ç. Çalık, W. Meier, R. C. Phan, K. Varıcı, and O. Özen, "Improved Cryptanalysis of Skein," In Advances in Cryptology - ASIACRYPT 2009, Lecture Notes in Computer Science 5912, M. Matsui (ed.), Springer-Verlag, pp. 542-559, 2009.
- K. Varici, O. Özen, C. Tezcan, and Ç. Kocair, "Lightweight Block Ciphers Revisited: Cryptanalysis of Reduced Round PRESENT and HIGHT," In Information Security and Privacy - 14th Australasian Conference, ACISP 2009, Lecture Notes in Computer Science 5594, C. Boyd, and J. González (eds.), Springer-Verlag, pp. 90-107, 2009.
- O. Özen, K. Varıcı, "On
the Security of the Encryption Mode of Tiger", Information Security and Cryptology, Ankara, Turkey, December 2007
- O. Özen, K. Varıcı, A. Doğanaksoy "On
the Security of the Encryption Mode of Tiger", Tools for
Cryptanalysis, Krakow, Poland September 2007,
