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Title:
improved results on impossible differential cryptanalysis of reduced-round camellia-192/256
Author: Liu Ya ; Gu Dawu ; Liu Zhiqiang ; Li Wei
Source: Journal of Systems and Software
Issued Date: 2012
Volume: 85, Issue:11, Pages:2451-2458
Indexed Type: ei
Department: (1) Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai, China; (2) School of Computer Science and Technology, Donghua University, Shanghai 201620, China; (3) Shanghai Key Laboratory of Integrate Administration Technologies for Information Security, Shanghai 200240, China; (4) State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China
English Abstract: 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-1 layer. 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 2120 chosen plaintexts and 2119.8 chosen plaintexts, respectively. The corresponding time complexities are approximately 2167.1 11-round encryptions and 2220.87 12-round encryptions. As far as we know, our attacks are 216.9 times and 219.13 times faster than the previously best known ones but have slightly more data. © 2012 Elsevier Inc. All rights reserved.
Language: 英语
WOS ID: WOS:000309315500003
Citation statistics:
Content Type: 期刊论文
URI: http://ir.iscas.ac.cn/handle/311060/14735
Appears in Collections:软件所图书馆_期刊论文

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Recommended Citation:
Liu Ya,Gu Dawu,Liu Zhiqiang,et al. improved results on impossible differential cryptanalysis of reduced-round camellia-192/256[J]. Journal of Systems and Software,2012-01-01,85(11):2451-2458.
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