Eran Lambooij

I am currently a postdoc at INRIA Paris analysing small block ciphers, and block ciphers in general.

Mainly interested in: cryptanalysis, software development, photography, painting, arts in general, backgammon, the world.

You can contact me through mail: first name [at] domain name [dot] io [public key] (or first.last [at] inria [dot] fr). Or come to my office at Inria.

Publications

• A. Florex-Gutierrez, E. Lambooij, G. Leurent, H. Raddum, T. Tiessen, M. Verbauwhede. Cryptanalysis of Full SCARF. EUROCRYPT 2025.
• O. Dunkelman, S. Ghosh, E. Lambooij. Attacking the IETF/ISO Standard for Internal Re-keying CTR-ACPKM. IACR Transactions of Symmetric Cryptology. 2023
• O. Dunkelman, S. Ghosh, E. Lambooij. Practical Related-Key Forgery Attacks on Full-Round TinyJAMBU-192/256. IACR Transactions of Symmetric Cryptology. 2023
• O. Dunkelman, S. Ghosh, E. Lambooij. Full Round Zero-Sum Distinguishers on TinyJAMBU-128 and TinyJAMBU-192 Keyed-Permutation in the Known-Key Setting. INDOCRYPT 2022.
• O. Dunkelman, S. Huang, E. Lambooij, S. Perle. Biased differential distinguisher - Cryptanalysis of reduced-round SKINNY. Information and Computation 281.
• O. Dunkelman, A, Kumar, E. Lambooij, S.K. Sanadhya. Counting Active S-Boxes is not Enough. INDOCRYPT 2020
• O. Dunkelman, S. Huang, E. Lambooij, S. Perle. Single Tweakey Cryptanalysis of Reduced-Round SKINNY-64. CSCML 2020 (Best Paper)
• O. Dunkelman, N. Keller, E. Lambooij, Y Sasaki. A Practical Forgery Attack on Lilliput-AE. Journal of Cryptology.
• Y. Chen, E. Lambooij, B. Mennink. How to Build Pseudorandom Functions from Public Random Permutations. CRYPTO 2019
• R. Ankele, C. Dobraunig, J. Guo, E. Lambooij, G. Leander, Y. Todo. Zero-Correlation Attacks on Block Ciphers with Linear Tweakey Expansion. in IACR Transactions on Symmetric Cryptology. 2019 edn, vol. Issue 1, Ruhr-Universität Bochum, Paris, France.
• A. Canteaut, E. Lambooij, S. Neves, S. Rasoolzadeh, Y. Sasaki, M. Stevens. Exact Probability of Differential Characteristics  Including Dependency between Multiple Rounds. IACR Transactions on Symmetric Cryptology, [S.l.], p. 203-227, June 2017. ISSN 2519-173X, Volume 2017, issue 2.
• D. J. Bernstein, T. Chou, C. Chuengsatiansup, A. Hülsing, E. Lambooij, T. Lange, R. Niederhagen, C. van Vredendaal. How to manipulate curve standards: a white paper for the black hat. Security Standardisation Research: Second International Conference, SSR 2015. p. 109-139. LNCS, Volume 9497, Springer

Talks

• A Practical Forgery Attack on Lilliput-AE. NIST LWC Workshop 2019. Gaithersburg, Maryland. November 2019.
• Distinguishing iterated encryption. Cryptacus 2017. Radboud University. Nijmegen, the Netherlands. November 2017.

Thesis

My PhD thesis, Cryptanalysis of Lightweight Block Ciphers

My Master's thesis, 'Cryptanalysis of Simon et al.'

Teaching

A Hands on Introduction to Symmetric Key Cryptanalysis: see this webpage for the course website.

CV

You can download my CV here

Fun projects

Cryptanex [Cryptanalysis exercises]: a webapp that I use in my hands on cryptanalysis course. See the website and try to solve some exercises.

PhotoCrypt: an app that encrypts a message and uses a scrambled photo as the key. You can only decrypt the message once you unscramble the photo.

OpenGammon: a backgammon platform I am maintaining.