Cryptanalysis on SDDO-Based BM123-64 Designs Suitable for Various IoT Application Targets

Abstract

BM123-64 block cipher, which was proposed by Minh, N.H. and Bac, D.T. in 2014, was designed for high speed communication applications factors. It was constructed in hybrid controlled substitution–permutation network (CSPN) models with two types of basic controlled elements (CE) in distinctive designs. This cipher is based on switchable data-dependent operations (SDDO) and covers dependent-operations suitable for efficient primitive approaches for cipher constructions that can generate key schedule in a simple way. The BM123-64 cipher has advantages including high applicability, flexibility, and portability with different algorithm selection for various application targets with internet of things (IoT) as well as secure protection against common types of attacks, for instance, differential attacks and linear attacks. However, in this paper, we propose methods to possibly exploit the BM123-64 structure using related-key attacks. We have constructed a high probability related-key differential characteristics (DCs) on a full eight rounds of BM123-64 cipher. The related-key amplified boomerang attack is then proposed on all three different cases of operation-specific designs with effective results in complexity of data and time consumptions. This study can be considered as the first cryptographic results on BM123-64 cipher.

A Cube Attack on a Reduced-Round Sycon

“…Therefore, we require 2 4 − 1 variables in the cube for an attack against the 5-round Sycon. In the same way, after six rounds, the degree of S is 2 5 . Thus, we need 2 5 − 1 variables in the cube.…”

“…However, the importance of information security must be emphasized, because there are risks of being exposed to cyber security threat, manipulation or leakage of data and invasion of privacy during the transmission of data by wireless communication [1][2][3]. In wireless communication, information security may be provided through cryptographic algorithms [4,5]. However, since the security strength of cryptographic algorithms does not provide immutability, it must be continuously re-evaluated and reviewed for proper use.…”

Recovery-Key Attacks against TMN-family Framework for Mobile Wireless Networks

“…Particularly, the attack had become effective cryptanalysis technique applying for various cipher mechanisms since the target aims to exploit two distinctive related-key differential characteristics for finding right quartets with high probability. Some of the previous cryptanalysis that used this attack scenario on DDO-based ciphers had given high efficiency and high probability in cryptanalytic results, like on BMD-128 [9], XO-64 [10], DDO-64 [11], MD-64 [12], and BM123-64 [3]. In the model of related-key boomerang attack, the cipher E is divided into two sub-ciphers, depicted as E = E 1 ○E 0 .…”

Symmetry-Adapted Machine Learning for Information Security

“…Symmetry-Adapted Machine Learning for Information Security delivers successfully accepted submissions [1][2][3][4][5][6][7][8][9][10][11][12] in this Special Issue of Symmetry. Proposals for several innovative paradigms, novel architectural designs, and frameworks with symmetry-adapted machine learning are covered in this particular issue.…”

“…Phuc et al [1] propose a new attack method for the BM123-64 structure based on related-key attacks. The study addresses the security weaknesses found in ciphers based on data-dependent operations implemented in lightweight targets and rapid transformation.…”