NDLI: SMT-based cube attack on round-reduced Simeck32/64

Content Provider	IET Digital Library
Author	Zaheri, Mojtaba Sadeghiyan, Babak
Abstract	In this study, the authors take advantage of feeding the SMT solver by extra information provided through middle state cube characteristics to introduce a new method which they call SMT-based cube attack, and apply it to improve the success of the solver in attacking reduced-round versions of Simeck32/64 lightweight block cipher. The key idea is to search for and utilise all found middle state characteristics of a cube at one round of attack. They first propose a new algorithm to find cubes with most number of middle state characteristics. Then, they apply these obtained cubes and their characteristics as extra information in the SMT definition of the cryptanalysis problem, to evaluate its effectiveness. Their cryptanalysis results in a full key recovery attack by 64 plaintext/ciphertext pairs on 12 rounds of the cipher in just 122.17 s. This is the first algebraic attack so far presented against the reduced-round versions of Simeck32/64, and also with practical complexities. They also conduct the cube attack on the Simeck32/64 to compare with the SMT-based cube attack. The results indicate that the proposed attack is more powerful than the cube attack.
Starting Page	604
Ending Page	611
Page Count	8
ISSN	17518709
Volume Number	14
e-ISSN	17518717
Issue Number	Issue 5, Sep (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-ifs/14/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-ifs.2019.0496
Journal	IET Information Security
Publisher Date	2020-05-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Block Cipher Boolean Satisfiability Problem Ciphertext Pairs Computability Cryptanalysis Cryptography Data Security Formal Logic Key Recovery Attack Middle State Cube Characteristic Reduced-round Versions SMT Solver SMT-based Cube Attack
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Information Systems Software

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