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New Impossible Differential Attacks on AES
2008In this paper we apply impossible differential attacks to reduced round AES. Using various techniques, including the early abort approach and key schedule considerations, we significantly improve previously known attacks due to Bahrak-Aref and Phan. The improvement of these attacks leads to better impossible differential attacks on 7-round AES-128 and ...
Lu, J. +3 more
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New Impossible Differential Attacks on Camellia
2012Camellia is one of the most worldwide used block ciphers, which has been selected as a standard by ISO/IEC. In this paper, we propose several new 7-round impossible differentials of Camellia with 2 FL/FL−1 layers, which turn out to be the first 7-round impossible differentials with 2 FL/FL−1 layers.
Dongxia Bai, Leibo Li
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Impossible-Differential Attacks on Large-Block Rijndael
2007This paper reports impossible-differential (ID) attacks on reduced-round versions of the Rijndael cipher with text blocks larger than 128 bits. These attacks follow the framework of the attacks by Biham-Keller and Cheon et al. on the AES, and reach up to seven rounds of large-block Rijndael variants.
Jorge Nakahara, Ivan Carlos Pavão
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Impossible Differential Attack on Reduced-Round TWINE
2014TWINE, proposed at the ECRYPT Workshop on Lightweight Cryptography in 2011, is a 64-bit lightweight block cipher consisting of 36 rounds with 80-bit or 128-bit keys. In this paper, we give impossible differential attacks on both versions of the cipher, which is an improvement over what the designers claimed to be the best possible. Although our results
Xuexin Zheng, Keting Jia
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Impossible Differential Attacks on Reduced-Round LBlock
2012LBlock is a lightweight block cipher with 32 rounds, which can be implemented efficiently not only in hardware environment but also in software platforms. In this paper, by exploiting the structure of LBlock and the redundancy in its key schedule, we propose an impossible differential attack on 21-round LBlock based on a 14-round impossible ...
Ya Liu, Dawu Gu, Zhiqiang Liu, Wei Li
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Note on Impossible Differential Attacks
2016While impossible differential cryptanalysis is a well-known and popular cryptanalytic method, errors in the analysis are often discovered and many papers in the literature present flaws. Wishing to solve that, Boura et al.i¾?[1] presented at ASIACRYPT'14 a generic vision of impossible differential attacks with the aim of simplifying and helping the ...
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Differential and Impossible Differential Related-Key Attacks on Hierocrypt-L1
2014Hierocrypt-L1 is one of the Japanese e-Government Recommended Ciphers listed by CRYPTREC in 2003, and its security was reconfirmed as secure by CRYPTREC in 2013. In this paper we first find differential characteristics with probability 1 in the key scheduling of Hierocrypt-L1.
Bungo Taga, Shiho Moriai, Kazumaro Aoki
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Impossible Differential Attack on 30-Round SHACAL-2
2003SHACAL-2 is a 256-bit block cipher with various key sizes based on the hash function SHA-2. Recently, it was recommended as one of the NESSIE selections. Up to now, no security flaws have been found in SHACAL-2. In this paper, we discuss the security of SHACAL-2 against an impossible differential attack.
Seokhie Hong +5 more
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New Related-Key Impossible Differential Attack on MIBS-80
2016 International Conference on Intelligent Networking and Collaborative Systems (INCoS), 2016MIBS is a lightweight block cipher designed by M. Izadi et al in 2009 for tiny computing devices, such as RFID tags and sensor network nodes. The cipher algorithm iterates a Feistel structure with SP type round function by 32 rounds. It with 64-bit block size and supports 64/80-bit key size.
Lu Cheng, Peng Xu, Yuechuan Wei
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Improved Impossible Differential Attack on Reduced-Round LBlock
2016LBlock is a 32-round lightweight block cipher with a 64-bit block size and an 80-bit key. This paper presents a new impossible differential attack on LBlock by improving the previous best result for 1 more round. Based on the nibble conditions, detailed differential properties of LBlock S-Boxes and thorough exploration of subkey relations, we set up ...
Ning Wang, Xiaoyun Wang, Keting Jia
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