Improving impossible-differential attacks against Rijndael-160 and Rijndael-224
نویسندگان
چکیده
منابع مشابه
Improved Impossible Differential Attacks on Large-Block Rijndael
In this paper, we present more powerful 6-round impossible differentials for large-block Rijndael-224 and Rijndael-256 than the ones used by Zhang et al. in ISC 2008. Using those, we can improve the previous impossible differential cryptanalysis of both 9-round Rijndael224 and Rijndael-256. The improvement can lead to 10-round attack on Rijndael-256 as well. With 2 chosen plaintexts, an attack ...
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In this paper we present the first related-key rectangle cryptanalysis of Rijndael-160/160 and Rijndael-192/192. Our attack on Rijndael-160/160 covers eight rounds. The attack complexities are 2 chosen plaintexts, 2 8-round Rijndael-160/160 encryptions and 2 bytes. Our attack on Rijndael-192/192 covers ten rounds. It requires 2 chosen plaintexts, 2 10-round Rijndael192/192 encryptions and 2 byt...
متن کاملImproving Integral Attacks Against Rijndael-256 Up to 9 Rounds
Rijndael is a block cipher designed by V. Rijmen and J. Daemen and it was chosen in its 128-bit block version as AES by the NIST in October 2000. Three key lengths 128, 192 or 256 bits are allowed. In the original contribution describing Rijndael [4], two other versions have been described: Rijndael-256 and Rijndael-192 that respectively use plaintext blocks of length 256 bits and 192 bits unde...
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Impossible differential attacks against Rijndael and Crypton have been proposed up to 5-round. In this paper we expand the impossible differential attacks to 6-round. Although we use the same 4-round impossible differential as in five round attacks, we put this impossible differential in the middle of 6-round. That is, we will consider one round before the impossible differential and one more r...
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We propose a new method for evaluating the security of block ciphers against di erential cryptanalysis and propose new structures for block ciphers. To this end, we de ne the word-wise Markov (Feistel) cipher and random output-di erential (Feistel) cipher and clarify the relations among the di erential, the truncated di erential and the impossible di erential cryptanalyses of the random output-...
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ژورنال
عنوان ژورنال: Designs, Codes and Cryptography
سال: 2016
ISSN: 0925-1022,1573-7586
DOI: 10.1007/s10623-016-0206-7