Concept
Classical cipher
Related publications (7)
BBB security for 5-round even-Mansour-based key-alternating Feistel ciphers
In this paper, we study the security of the Key-Alternating Feistel (KAF) ciphers, a class of key alternating ciphers with the Feistel structure, where each round of the cipher is instantiated with n-bit public round permutation Pi\documentclass[12pt]{mini ...
SPRINGER2023Security in the Presence of Quantum Adversaries
With the looming threat of large-scale quantum computers, a fair portion of recent cryptographic research has focused on examining cryptographic primitives from the perspective of a quantum adversary. Shor's 1994 result revealed that quantum computers can ...
EPFL2023The Role of Compromised Accounts in Social Media Manipulation
In recent years we have seen a marked increase in disinformation including as part of a strategy of so-called hybrid warfare. Adversaries not only directly spread misleading content but manipulate social media by employing sophisticated techniques that exp ...
EPFL2022New Impossible Differential and Known-Key Distinguishers for the 3D Cipher
The contributions of this paper are new 6-round impossible-differential (ID) and 9.75-round known-key distinguishers for the 3D block cipher. The former was constructed using the miss-in-the-middle technique, while the latter with an inside-out technique. ...
Springer-Verlag Berlin20113D: A Three-Dimensional Block Cipher
The main contribution of this paper is a new iterated secret- key block cipher called 3D, inspired by the AES cipher. The 3D cipher has an SPN design, operates on 512-bit blocks, uses 512-bit keys, it- erates 22 rounds, and employs a 3-dimensional state, i ...
2008A Universal Encryption Standard
DES and triple-DES are two well-known and popular encryption algorithms, but they both have the same drawback : their block size is limited to 64 bits. While the cryptographic community is working hard to select and evaluate candidates and finalists for th ...
2000Feistel ciphers with L2-decorrelation
Recently, we showed how to strengthen block ciphers by decorrelation techniques. In particular, we proposed two practical block ciphers, one based on the GF(2n)-arithmetics, the other based on the x mod p mod 2n primitive with a prime ...
1999