Bart Mennink

Privacy-preserving Distributed Access Control for Medical Data

2018 · Proceedings of the 15th International Joint Conference on e-Business and Telecommunications

\n Contains fulltext :\n 197708.pdf (Publisher’s version ) (Open Access)\n

Trivial Nonce-Misusing Attack on Pure OMD.

2015 · IACR Cryptology ePrint Archive

Abstract. Pure OMD is an authenticated encryption mode that will be presented by Rey-hanitabar et al. at FSE 2015. It is (among others) claimed to achieve authenticity against nonce-misusing adversaries. We show that this claim …

Security of the Suffix Keyed Sponge

2020 · IACR Transactions on Symmetric Cryptology

We formalize and analyze the general suffix keyed sponge construction, a pseudorandom function built on top of a cryptographic permutation. The construction hashes its data using the (keyless) sponge construction, transforms part of the state …

Security Analysis of BLAKE2’s Modes of Operation

2016 · IACR Transactions on Symmetric Cryptology

BLAKE2 is a hash function introduced at ACNS 2013, which has been adopted in many constructions and applications. It is a successor to the SHA-3 finalist BLAKE, which received a significant amount of security analysis. …