Konstantinos Limniotis

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Konstantinos Limniotis

Personal Info

Konstantinos Limniotis,
Department of Informatics and Telecommunications,
National and Kapodistrian University of Athens,
TYPA Buildings, University Campus,
15784, Athens, Greece.
Tel: +30 2107275340
Email: klimn at di dot uoa dot gr
My PGP Public Key (Fingerprint: EACA A6AB F9DF 66E2 1BF7 91EF 8694 0690 76C9 2121)



Biography

I received the B.Sc. degree in computer science (1999), the M.Sc. degree in communications systems and networks (2002), and the Ph.D. degree on ``Signal Processing Techniques in Cryptography'' (2007) from the Department of Informatics and Telecommunications, University of Athens, Greece. I am currently a research associate with the Digital Signal Processing Lab of the Department, participating in the research project Swincom. My main research interests include symmetric cryptography, data protection, sequence analysis, and VLSI design.

Since 2008, I have been an Adjunct Lecturer at the Department of Informatics, Technological Educational Institute of Athens, Greece, teaching the laboratory course of Information Technology Security.

For three years (2005-2007, 2008-2009), I had been an Adjunct Lecturer at the Dept. of Informatics and Computer Technology, Technological Educational Institute of Lamia, Greece, teaching Cryptography, Virual Private Networks and Mobile Communications (for the lecture notes, see below).

I have also joined the Hellenic Data Protection Authority as an ICT auditor since 2009.

For my detailed CV, please click here.


Publications

Ph.D. Thesis

Journal publications

  1. K. Limniotis, N. Kolokotronis and N. Kalouptsidis, "Secondary constructions of Boolean functions with maximum algebraic immunity'', Cryptography and Communications - Discrete Structures, Boolean Functions and Sequences, Springer, pp. 179–199, no. 3, vol. 5, Sep. 2013. [ link ]

  2. N. Kolokotronis, K. Limniotis and N. Kalouptsidis, "Best affine and quadratic approximations of particular classes of Boolean functions'',  IEEE Trans. Inform. Theory, vol. 55, no. 11, pp. 5211—5222, Nov. 2009. [ link ]

  3. T. Etzion, N. Kalouptsidis, N. Kolokotronis, K. Limniotis and K. G. Paterson, "Properties of the error linear complexity spectrum'',  IEEE Trans. Inform. Theory, vol. 55, no. 10, pp. 4681—4686, Oct. 2009. [ link ]

  4. N. Kolokotronis, K. Limniotis and N. Kalouptsidis, "Factorization of determinants over finite fields and applications in stream ciphers'', Cryptography and Communications - Discrete Structures, Boolean Functions and Sequences, Berlin, Germany: Springer-Verlag, vol. 1, no. 2, pp. 175—205, Sep. 2009. [ link ]

  5. K. Limniotis, N. Kolokotronis and N. Kalouptsidis, "On the linear complexity of sequences obtained by state space generators'',  IEEE Trans. Inform. Theory, vol. 54, no. 4, pp. 1786—1793, Apr. 2008. [ link ]

  6. K. Limniotis, N. Kolokotronis and N. Kalouptsidis, "On the nonlinear complexity and Lempel-Ziv complexity of finite length sequences,'' IEEE Trans. Inform. Theory, vol. 53, no. 11. pp. 4293—4302, Nov. 2007. [ link ]

  7. K. Limniotis, Y. Tsiatouhas, Th. Haniotakis and A. Arapoyanni, "A design technique for energy reduction in NORA CMOS logic," IEEE Trans. Circuits & Systems I Regul. Pap. vol. 53, no. 12, pp. 2647—2655, Dec. 2006.[ link ]

Conference publications

  1. N. Kolokotronis and K. Limniotis, "On the second-order nonlinearity of cubic Maiorana-McFarland Boolean functions", International Symposium on Information Theory and its Applications (ISITA), pp. 596—600, October 2012. [ link ]

  2. N. Kolokotronis and K. Limniotis, "A greedy algorithm for checking normality of cryptographic Boolean functions", International Symposium on Information Theory and its Applications (ISITA), pp. 601—605, October 2012. [ link ]

  3. K. Limniotis, N. Kolokotronis and N. Kalouptsidis, "Constructing Boolean functions in odd number of variables with maximum algebraic immunity", in IEEE International Symposium on Information Theory (ISIT), pp. 2686—2690, August 2011. [ link ]

  4. T. Etzion, N. Kalouptsidis, N. Kolokotronis, K. Limniotis and K. G. Paterson, "On the error linear complexity profiles of binary sequences of period 2n", in IEEE International Symposium on Information Theory (ISIT), pp. 2400—2404, July 2008. [ link ]

  5. N. Kolokotronis, K. Limniotis and N. Kalouptsidis, "Efficient computation of the best quadratic approximations of cubic boolean functions", in 11th IMA International Conference on Cryptography and Coding, (Lecture Notes in Computer Science). Berlin, Germany: Springer-Verlag, vol. 4887, pp. 73—91, Dec. 2007. [ link ]

  6. N. Kolokotronis, K. Limniotis and N. Kalouptsidis, "Improved bounds on the linear complexity of keystreams obtained by filter generators", in 3rd SKLOIS Conference on Information Security and Cryptology (Inscrypt 2007), (Lecture Notes in Computer Science). Berlin, Germany: Springer-Verlag, vol. 4990, pp. 246—255, Sept. 2007. [ link ]

  7. N. Kolokotronis, K. Limniotis and N. Kalouptsidis, "Best affine approximations of Boolean functions and applications to low order approximations",  in IEEE International Symposium on Information Theory (ISIT), pp. 1836—1840, June 2007. [ link ]

  8. K. Limniotis, N. Kolokotronis and N. Kalouptsidis, "Nonlinear complexity of binary sequences and connections with Lempel-Ziv compression", in Sequences and Their Applications (SETA), (Lecture Notes in Computer Science). Berlin, Germany: Springer-Verlag, vol. 4086, pp. 168—179, Sept. 2006. [ link ]

  9. N. Kolokotronis, K. Limniotis and N. Kalouptsidis, "Lower bounds on sequence complexity via generalised Vandermonde determinants", in Sequences and Their Applications (SETA), (Lecture Notes in Computer Science). Berlin, Germany: Springer-Verlag, vol. 4086, pp. 271—284, Sept. 2006. [ link ]

  10. K. Limniotis, N. Kolokotronis and N. Kalouptsidis, "New results on the linear complexity of binary sequences", in IEEE International Symposium on Information Theory (ISIT), pp. 2003—2007, July 2006. [ link ]

  11. N. Kalouptsidis and K. Limniotis, "Nonlinear span, minimal realizations of sequences over finite fields and De Bruijn generators", International Symposium on Information Theory and its Applications (ISITA), pp. 794—799, October 2004.

  12. Y. Tsiatouhas, K. Limniotis, A. Arapoyanni and Th. Haniotakis, "A low power NORA design technique based on charge recycling", IEEE International Conference on Electronics, Circuits and Systems (ICECS), pp. 224—227, December 2003.  [ link ]

Books - Volume chapters

Other publications

  1. K. Limniotis, "Algebraic attacks on stream ciphers: Recent developments and new results", Journal of Applied Mathematics and Bioinformatics (Special Issue: Cryptography and its Applications in the Armed Forces), Scienpress Ltd., vol. 3, n. 1, pp. 57—81, 2013.  [ link ]

  2. Z. Kardasiadou, E. Chatziliasi and K. Limniotis, "e-Government in Greece: serving state’s economic needs – respecting the fundamental right to data protection", in the 7th International Conference in Global Security, Safety and Sustainability (ICGS3) / 4th e-Democracy Joint Conferences, (Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering), Springer, vol. 99, pp. 179—185, 2012.  [ link ]

Technical reports

  1. K. Limniotis, N. Kolokotronis and N. Kalouptsidis, "Modifying Boolean functions to ensure maximum algebraic immunity", Cryptology ePrint Archive, Report 2012/046 (2012), http://eprint.iacr.org.

  2. N. Kolokotronis and K. Limniotis, "Maiorana-McFarland functions with high second-order nonlinearity", Cryptology ePrint Archive, Report 2011/212 (2011), http://eprint.iacr.org.

  3. N. Kolokotronis, K. Limniotis and N. Kalouptsidis, "Best Quadratic Approximations of Cubic Boolean Functions", Cryptology ePrint Archive, Report 2007/037 (2007), http://eprint.iacr.org.

 

My public google scholar profile is available here.


Teaching


Invited talks

Cryptography

Personal Data Protection


Useful Links