Personal profile

Research Interests

Dr. Velichkov's area of research is symmetric-key cryptography. He is interested in techniques for cryptanalysis of block ciphers and in tools for automated cryptanalysis. A large part of his research has been dedicated to the analysis of a special class of cryptographic algorithms based on the operations modular addition, bitwise rotation and XOR (ARX). Vesselin Velichkov is broadly interested in all aspects of applied cryptography.

Qualifications

PhD, Cryptography, KU Leuven, COSIC, 2012
MSc, BSc, Communication Engineering, Technical University Sofia, 2002

Biography

Vesselin Velichkov is a Lecturer in Security and Privacy in the School of Informatics at the University of Edinburgh and a member of the Security and Privacy Group within the Laboratory for Foundations of Computer Science (LFCS). He has obtained his PhD in cryptography in 2012 from KU Leuven, Belgium under the supervision of Prof. Bart Preneel and Prof. Vincent Rijmen. Vesselin Velichkov holds a BSc/MSc degree (5 year) in Communication Engineering awarded in 2002 by the Technical University of Sofia, Bulgaria. From 2007 to 2012 he was a doctoral researcher at KU Leuven in the Computer Security and Industrial Cryptography research group (COSIC) headed by Prof. Preneel. Between 2012 and 2017, Dr. Velichkov was a post-doctoral researcher at the University of Luxembourg, where he was a member of the CryptoLUX group supervised by Prof. Alex Biryukov. Before joining the University of Edinburgh, Vesselin Velichkov was employed as a research associate in Temasek Labs, Nanyang Technological University, Singapore as part of the SYLLAB team lead by Prof. Thomas Peyrin.

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  • Conditional Cube Key Recovery Attack on Round-Reduced Xoodyak

    Vaziri, M. & Velichkov, V., 4 Oct 2023, Applied Cryptography and Network Security Workshops: ACNS 2023 Satellite Workshops, ADSC, AIBlock, AIHWS, AIoTS, CIMSS, Cloud S&P, SCI, SecMT, SiMLA, Kyoto, Japan, June 19–22, 2023, Proceedings. Springer, Vol. 13907. p. 43-62 20 p. (Lecture Notes in Computer Science; vol. 13907).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
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  • New Design Techniques for Efficient Arithmetization-Oriented Hash Functions: Anemoi Permutations and Jive Compression Mode

    Bouvier, C., Briaud, P., Chaidos, P., Perrin, L., Salen, R., Velichkov, V. & Willems, D., 9 Aug 2023, Advances in Cryptology – CRYPTO 2023. Springer, Vol. 14083. p. 507-539 (Lecture Notes in Computer Science; vol. 14083).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
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  • Meet-in-the-Filter and Dynamic Counting with Applications to Speck

    Biryukov, A., Cardoso dos Santos, L., Teh, J. S., Udovenko, A. & Velichkov, V., 29 May 2023, Applied Cryptography and Network Security : 21st International Conference, ACNS 2023, Proceedings. Tibouchi, M. & Wang, X. (eds.). Springer, Vol. 13905. p. 149-177 29 p. (Lecture Notes in Computer Science; vol. 13905).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
  • Automated Truncation of Differential Trails and Trail Clustering in ARX

    Biryukov, A., Cardoso dos Santos, L., Feher, D., Velichkov, V. & Vitto, G., 27 Mar 2022, Selected Areas in Cryptography: 28th International Conference, Virtual Event, September 29 – October 1, 2021, Revised Selected Papers. Al Tawy, R. & Hülsing, A. (eds.). Springer International Publishing, 31 p. (Lecture Notes in Computer Science; vol. 13203).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
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  • On The Cost of ASIC Hardware Crackers: A SHA-1 Case Study

    Chattopadhyay, A., Khairallah, M., Leurent, G., Najm, Z., Peyrin, T. & Velichkov, V., 11 May 2021, Topics in Cryptology – CT-RSA 2021. Springer International Publishing, p. 657 – 681 25 p. (Lecture Notes in Computer Science; vol. 12704).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
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