An Attack on the LILLE Stream Cipher

ePrint Report: An Attack on the LILLE Stream Cipher

Vahid Amin-Ghafari, Mohammad Ali Orumiehchiha, Saeed Rostami

A few small-state stream ciphers (SSCs) were proposed for constrained environments. All of the SSCs before the LILLE stream cipher suffered from distinguishing attacks and fast correlation attacks. The designers of LILLE claimed that it is based on the well-studied two-key Even-Mansour scheme and so is resistant to various types of attacks. This paper proposes a distinguishing attack on LILLE, the first attack since …

attack attacks cipher ciphers correlation designers environments eprint report fast key report state stream stream cipher types