International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Virginie Lallemand

Affiliation: CNRS, France

Publications

Year
Venue
Title
2019
EUROCRYPT
bison Instantiating the Whitened Swap-Or-Not Construction 📺
We give the first practical instance – bison – of the Whitened Swap-Or-Not construction. After clarifying inherent limitations of the construction, we point out that this way of building block ciphers allows easy and very strong arguments against differential attacks.
2018
JOFC
2018
CRYPTO
Rasta: A Cipher with Low ANDdepth and Few ANDs per Bit 📺
Recent developments in multi party computation (MPC) and fully homomorphic encryption (FHE) promoted the design and analysis of symmetric cryptographic schemes that minimize multiplications in one way or another. In this paper, we propose with Rastaa design strategy for symmetric encryption that has ANDdepth d and at the same time only needs d ANDs per encrypted bit. Even for very low values of d between 2 and 6 we can give strong evidence that attacks may not exist. This contributes to a better understanding of the limits of what concrete symmetric-key constructions can theoretically achieve with respect to AND-related metrics, and is to the best of our knowledge the first attempt that minimizes both metrics simultaneously. Furthermore, we can give evidence that for choices of d between 4 and 6 the resulting implementation properties may well be competitive by testing our construction in the use-case of removing the large ciphertext-expansion when using the BGV scheme.
2016
CRYPTO
2015
EPRINT
2015
EPRINT
2015
EUROCRYPT
2015
CRYPTO
2014
EPRINT
2014
EPRINT
2014
FSE

Program Committees

FSE 2020
FSE 2019
Asiacrypt 2019
FSE 2018
Asiacrypt 2018