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Optimally Secure Tweakable Block Ciphers with a Large Tweak from n-bit Block Ciphers
IACR Transactions on Symmetric Cryptology, 2023 We consider the design of a tweakable block cipher from a block cipher whose inputs and outputs are of size n bits. The main goal is to achieve 2n security with a large tweak (i.e., more than n bits). Previously, Mennink at FSE’15 and Wang et al.
Yaobin Shen, François-Xavier Standaert
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, 2002 In this paper, we propose a new symmetric key block cipher SC2000 with 128-bit block length and 128-,192-,256- bit key lengths. The block cipher is constructed by piling two layers: one is a Feistel structure layer and the other is an SPN structure layer. Each operation used in two layers is S-box or logical operation, which has been well studied about
Takeshi Shimoyama +7 more
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RAFA: Redundancies-assisted Algebraic Fault Analysis and its implementation on SPN block ciphers
Transactions on Cryptographic Hardware and Embedded Systems, 2023 Algebraic Fault Analysis (AFA) is a cryptanalysis for block ciphers proposed by Courtois et al., which incorporates algebraic cryptanalysis to overcome the complexity of manual analysis within the context of Differential Fault Analysis (DFA).
Zehong (Zephyr) Qiu, Fan Zhang
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Towards Low Energy Stream Ciphers
IACR Transactions on Symmetric Cryptology, 2018 Energy optimization is an important design aspect of lightweight cryptography. Since low energy ciphers drain less battery, they are invaluable components of devices that operate on a tight energy budget such as handheld devices or RFID tags.
Subhadeep Banik +7 more
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Simplified Modeling of MITM Attacks for Block Ciphers: New (Quantum) Attacks
IACR Transactions on Symmetric Cryptology, 2023 The meet-in-the-middle (MITM) technique has led to many key-recovery attacks on block ciphers and preimage attacks on hash functions. Nowadays, cryptographers use automatic tools that reduce the search of MITM attacks to an optimization problem.
André Schrottenloher, Marc Stevens
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STUDY OF THE CRYPTOGRAPHIC STRENGTH OF THE S-BOX OBTAINED ON THE BASIS OF EXPONENTIATION MODULO
Scientific Journal of Astana IT University, 2022 This article presents one of the main transformations of symmetric block ciphers used to protect confidential information, a new method for obtaining a non-linear S block, and an analysis of the results obtained.
Ardabek Khompysh +3 more
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网络与信息安全学报, 2017 Firstly,the differences and linear masks propagation equations of ARX ciphers were established.Secondly,the propagation equations were solved by SAT solver and judged valid or not.Finally,differences and linear masks were traversed to search impossible ...
Ya HAN
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Hybrid Code Lifting on Space-Hard Block Ciphers
IACR Transactions on Symmetric Cryptology, 2022 There is a high demand for whitebox cryptography from the practical use of encryption in untrusted environments. It has been actively discussed for two decades since Chow et al. presented the whitebox implementation of DES and AES. The goal is to resist
Yosuke Todo, Takanori Isobe
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Improved Correlation Power Analysis on Bitslice Block Ciphers
IEEE Access, 2022 Bitslice block ciphers have the advantage of allowing parallel computation using bitwise logical operations, and Boolean masking can be applied efficiently.
Jaeseung Han +4 more
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Automatic method for searching integral distinguishers of ARX block ciphers
Tongxin xuebao, 2018 Firstly,based on three subsets division property propagation technique,the propagation function of the K-set and L-set of ARX block ciphers was constructed respectively.All vectors in L-set affected the propagation of K-set when propagate through xored ...
Ya HAN, Mingsheng WANG
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