Designing an efficient cipher was always a delicate balance between linear and non-linear
operations. This goes back to the design of DES, and in fact all the way back to the seminal …

Two lightweight block cipher families, Simon and Speck, have been proposed by
researchers from the NSA recently. In this paper, we introduce Simeck, a new family of …

To be resistant against certain time-memory-data-tradeoff (TMDTO) attacks, a common rule
of thumb says that the internal state size of a stream cipher should be at least twice the …

In this paper we analyse two variants of SIMON family of light-weight block ciphers against
variants of linear cryptanalysis and present the best linear cryptanalytic results on these …

Nonlinear feedback shift registers (NFSRs) have been used as the main building blocks in
many stream ciphers and convolutional decoders. The linearization of NFSRs is to find their …

A few work has ever been performed in cryptanalysis of block ciphers using cube attacks.
This paper presents a new framework for an efficient key recovery attack on block ciphers …

In this paper, we propose a new hardware friendly authenticated encryption (AE) scheme
TriviA based on (i) a stream cipher for generating keys for the ciphertext and the tag, and (ii) …

The stream cipher Salsa20 and its reduced versions are among the fastest stream ciphers
available today. However, Salsa20/7 is broken and Salsa20/12 is not as safe as before …

In this paper, we describe a sub-maximal degree monomial test and propose a heuristic
algorithm for searching favourable cubes, for testing Boolean functions formed by stream …

Sprout is a new lightweight stream cipher proposed at FSE 2015. According to its designers,
Sprout can resist time-memory-data trade-off (TMDTO) attacks with small internal state size …