International Symposium on Computer Network and Multimedia Technology
Integral cryptanalysis of reduced-round crypton block cipher
作者:
H. R. Wei， B. Wang.
关键词:
cryptography；4-round Crypton；AES；Chae Hoon Lim cipher；Crypton block cipher；advanced encryption standard；blocks space；hardware implementations；integral cryptanalysis；partial sum techniques
摘要:
Crypton is a block cipher submitted as a candidate for the advanced encryption standard (AES). It is very efficient in hardware implementations and was designed by Chae Hoon Lim. In this paper, we construct some distinguishers between 4-round Crypton and a random permutation of the blocks space. By using integral Cryptanalysis and partial sum techniques, the distinguishers are used to attack on 5 and 6-round of Crypton. The data complexity of our attack is 2on 5-round Crypton, 6 路 2against 6-round Crypton respectively. The Time complexity of our attack is 2on 5-round Crypton, 2against 6-round Crypton respectively.
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