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| some new observations on the sms4 block cipher in the chinese wapi standard | |
| Zhang Wentao; Wu Wenling; Feng Dengguo; Su Bozhan | |
| 2009 | |
| Conference Name | 5th International Conference on Information Security Practice and Experience |
| Source | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
| Pages | 324-335 |
| Conference Date | APR 13-15, |
| Conference Place | Xi an, PEOPLES R CHINA |
| Indexed Type | istp,ei,acm |
| Publish Place | HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY |
| Publisher | INFORMATION SECURITY PRACTICE AND EXPERIENCE, PROCEEDINGS - 5TH INTERNATIONAL CONFERENCE, ISPEC 2009 |
| ISSN | 0302-9743 |
| ISBN | 978-3-642-00842-9 |
| Department | Zhang, Wentao; Wu, Wenling; Feng, Dengguo; Su, Bozhan Chinese Acad Sci, Inst Software, State Key Lab Informat Secur, Beijing 100190, Peoples R China. |
| English Abstract | SMS4 is a 128-bit block cipher used in the WAPI standard in wireless networks in China. The cipher has attracted much attention in the past two years. This paper consists of two parts. The first part is on the design of the linear diffusion layer L of SMS4. Some new observations on L are present, which open out the design rationales of L and such class functions to a great extent. The second part is on the differential attack against SMS4. A class of 18-round differential characteristics with a higher probability is given. Then a simple differential attack on 22-round SMS4 is present, which is an improvement of the previous work, thus our attack becomes the best known one on SMS4. Furthermore, we make a remark on the construction of differential characteristics of SMS4. |
| Keyword | Wapi Block Cipher Sms4 Diffusion Transformation Differential Cryptanalysis |
| Sponsorship | Xidian Univ, Xidian Univ, Sch Telecommun Engn, Key Lab Comp Networks & Informat Security, Minist Educ |
| Language | 英语 |
| Content Type | 会议论文 |
| URI | http://ir.iscas.ac.cn/handle/311060/8386 |
| Collection | 信息安全国家重点实验室 |
| Recommended Citation GB/T 7714 | Zhang Wentao,Wu Wenling,Feng Dengguo,et al. some new observations on the sms4 block cipher in the chinese wapi standard[C]. HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY:INFORMATION SECURITY PRACTICE AND EXPERIENCE, PROCEEDINGS - 5TH INTERNATIONAL CONFERENCE, ISPEC 2009,2009:324-335. |
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