On hidden sums compatible with a given block cipher diffusion layer

On Constructing of a 32 ×32 Binary Matrix as a Diffusion Layer for a 256-Bit Block Cipher

New Fixed Point Attacks on GOST2 Block Cipher

GOST block cipher designed in the 1970s and published in 1989 as the Soviet and Russian standard GOST 28147-89. In order to enhance the security of GOST block cipher after proposing various attacks on it, designers published a modified version of GOST, namely GOST2, in 2015 which has a new key schedule and explicit choice for S-boxes. In this paper, by using three exactly identical portions of ...

Division Cryptanalysis of Block Ciphers with a Binary Diffusion Layer

In this paper, we propose an accurate security evaluation methodology for block ciphers with a binary diffusion layers against division cryptanalysis. We illustrate the division property by the independence of variables, and exploit a one-toone mapping between division trails and invertible sub-matrices. We give a new way to model the propagation of division property of linear diffusion layers ...

Matrices of zeros and ones with given line sums and a zero block

We study the existence of (0, 1)-matrices with given line sums and a fixed zero block. An algorithm is given to construct such a matrix which is based on three applications of the well-known Gale–Ryser algorithm for constructing (0, 1)-matrices with given line sums. A characterization in terms of a certain “structure matrix” is proved. Further properties of this structure matrix are also establ...

a novel block cipher algorithm with feistel-like structure

block ciphers have wide applications for hardware and software implementations. in this paper, a new block cipher algorithm with provable security is proposed. the whole structure of the algorithm is novel and has a good encryption and decryption performance. additionally, it has good security with few number of rounds. the structure of the proposed algorithm consists of 4-rounds feistel-like w...