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The rapid distribution of lightweight devices raised the demand for efficient encryption and authenticated encryption schemes for small messages. For this purpose, Andreeva et al. recently proposed fo...
Reduced-round AES has been a popular underlying primitive to design new cryptographic schemes and thus its security including distinguishing properties deserves more attention. At Crypto'16, a key-dep...
Deoxys-BC is the internal tweakable block cipher of Deoxys, a third-round authenticated encryption candidate at the CAESAR competition. In this study, by adequately studying the tweakey schedule, we s...
QARMA is a family of lightweight tweakable block ciphers, which is used to support a software protection feature in the ARMv8 architecture. In this paper, we study the security of QARMA family against...
In this paper, we study the relation of single-key impossible differentials with the related-tweakey/key ones and propose an interesting algorithm that can efficiently derive longer related-tweakey/ke...
Deoxys is a third-round candidate of the CAESAR competition. This paper presents the first impossible differential cryptanalysis of Deoxys-BC-256 which is used in Deoxys as an internal tweakable block...
Midori is a family of lightweight block cipher proposed by Banik et al. in ASIACRYPT 2015 and it is optimized with respect to the energy consumed by the circuit per bit in encryption or decryption ope...
In this paper, a new tool searching for impossible differentials against symmetric-key primitives is presented. Compared to the previous tools, our tool can detect any contradiction between input and ...
Simpira v2 is a family of cryptographic permutations proposed at ASIACRYPT 2016 which can be used to construct high throughput block ciphers using the Even-Mansour construction, permutation-based hash...
Kiasu-BC is a tweakable block cipher proposed by Jean et al. at ASIACRYPT 2014 alongside their TWEAKEY framework. The cipher is almost identical to the AES-128 except for the tweak, which renders it a...
Impossible differential attack is one of powerful methods for analyzing encryption algorithms. When designing cryptographic algorithms, it must be safe for impossible differential attacks. In case of ...
SKINNY is a new lightweight tweakable block cipher family proposed by Beierle etet alal. in CRYPTO 2016. SKINNY-nn-tt is a block cipher with nn-bit state and tt-bit tweakey (key and tweak). It is desi...
At CRYPTO'16, Beierle et al. presented SKINNY, a family of lightweight tweakable block ciphers intended to compete with SIMON. SKINNY can be implemented efficiently in both soft- and hardware, possess...
SIMON is a lightweight block cipher designed by NSA in 2013. NSA presented the specification and the implementation efficiency, but they did not provide detailed security analysis nor the design ratio...
Tracking bits through block ciphers and optimizing attacks at hand is one of the tedious task symmetric cryptanalysts have to deal with. It would be nice if a program will automatically handle them at...

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