Improved results on impossible differential cryptanalysis of reduced-round Camellia-192/256
Improved results on impossible differential cryptanalysis of reduced-round Camellia-192/256
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简化轮次 Camellia-192/256 不可能差分密码分析的改进结果
DOI:
10.1016/j.jss.2012.05.051
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发表时间:
2012-11
影响因子:
3.5
通讯作者:
W. Li
中科院分区:
文献类型:
--
作者:
Y. Liu;D. Gu;Z. Liu;W. Li
As an international standard adopted by ISO/IEC, the block cipher Camellia has been used in various cryptographic applications. In this paper, we reevaluate the security of Camellia against impossible differential cryptanalysis. Specifically, we propose several 7-round impossible differentials with the FL/FL−1layer. Based on one of them, we mount impossible differential attacks on 11-round Camellia-192 and 12-round Camellia-256. The data complexities of our attacks on 11-round Camellia-192 and 12-round Camellia-256 are about 2120chosen plaintexts and 2119.8chosen plaintexts, respectively. The corresponding time complexities are approximately 2167.111-round encryptions and 2220.8712-round encryptions. As far as we know, our attacks are 216.9times and 219.13times faster than the previously best known ones but have slightly more data.
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影响因子:
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作者:
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DOI:
--
发表时间:
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期刊:
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
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IACR Cryptol. ePrint Arch.
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DOI:
10.1007/978-3-540-77048-0_21
发表时间:
2007-12
期刊:
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