Ruhr-Uni-Bochum

Lower Bounds on the Degree of Block Ciphers

2020

Konferenz / Journal

Research Hub

Research Hub A: Kryptographie der Zukunft

Research Challenges

RC 1: Cryptography against Mass Surveillance

Abstract

Only the method to estimate the upper bound of the algebraic degree on block ciphers is known so far, but it is not useful for the designer to guarantee the security. In this paper we provide meaningful lower bounds on the algebraic degree of modern block ciphers.

Tags

Symmetric Cryptography
Cryptanalysis
Cryptography