Further Observations on SIMON and SPECK Block Cipher Families
نویسندگان
چکیده
منابع مشابه
Observations on the SIMON Block Cipher Family
In this paper we analyse the general class of functions underlying the Simon block cipher. In particular, we derive efficiently computable and easily implementable expressions for the exact differential and linear behaviour of Simon-like round functions. Following up on this, we use those expressions for a computer aided approach based on SAT/SMT solvers to find both optimal differential and li...
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The U.S. National Security Agency (NSA) developed the Simon and Speck families of lightweight block ciphers as an aid for securing applications in very constrained environments where AES may not be suitable. This paper sum marizes the algorithms, their design rationale, along with current cryptanalysis and implemen tation results.
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In this paper we continue the previous line of research on the analysis of the differential properties of the lightweight block ciphers Simon and Speck. We apply a recently proposed technique for automatic search for differential trails in ARX ciphers and improve the trails in Simon32 and Simon48 previously reported as best. We further extend the search technique for the case of differentials a...
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To reduce the cost in hardware, key schedules of lightweight block ciphers are usually simple and some even are direct linear transformations on master keys. Designers always add some asymmetry rounddependent constants to prevent the well-known slide attack. For linear key schedules, the choice of round constants becomes important but lacks principles. In this paper, we aim at evaluating the ro...
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The 128-bit block cipher TWIS was proposed by Ojha et al in 2009. It is a lightweight block cipher and its design is inspired from CLEFIA. In this paper, we first study the properties of TWIS structure, and as an extension we also considered the generalized TWIS-type structure which can be called G-TWIS cipher, where the block size and round number can be arbitrary values. Then we present a ser...
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ژورنال
عنوان ژورنال: Cryptography
سال: 2018
ISSN: 2410-387X
DOI: 10.3390/cryptography3010001