Weaknesses of cosvd (2,128) stream cipher
文献类型：期刊论文
| 作者 | Zhang, Bin; Wu, Hongjun; Feng, Dengguo; Wang, Hong |
| 刊名 | Information security and cryptology - icisc 2005
 |
| 出版日期 | 2006 |
| 卷号 | 3935页码:270-283 |
| 关键词 | Stream cipher Cos cipher Divide-and-conquer Non-linear feedback shift register |
| ISSN号 | 0302-9743 |
| 通讯作者 | Zhang, bin(martin_zhangbin@yahoo.com.cn) |
| 英文摘要 | The cosvd (2,128) cipher was proposed at the ecrypt sasc'2004 workshop by filiol et. al to strengthen the past cos (2,128) stream cipher. it uses clock-controlled non-linear feedback registers filtered by a highly non-linear output function and was claimed to prevent any existing attacks. however, as we will show in this paper, there are some serious security weaknesses in cosvd (2,128). the poorly designed s-box generates biased keystream and the message could be restored by a ciphertext-only attack in some broadcast applications. besides, we launch a divide-and-conquer attack to recover the secret keys from o(2(26))-byte known plaintext with high success rate and complexity o(2(113)), which is much lower than 2(512), the complexity of exhaustive search. |
| WOS研究方向 | Computer Science |
| WOS类目 | Computer Science, Theory & Methods |
| 语种 | 英语 |
| WOS记录号 | WOS:000238283000021 |
| 出版者 | SPRINGER-VERLAG BERLIN |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2378543 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhang, Bin |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Informat Secur, Inst Software, Beijing 100080, Peoples R China 2.Katholieke Univ Leuven, Dept ESAT COSIC, Louvain, Belgium 3.Chinese Acad Sci, State Key Lab Informat Secur, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Bin,Wu, Hongjun,Feng, Dengguo,et al. Weaknesses of cosvd (2,128) stream cipher[J]. Information security and cryptology - icisc 2005,2006,3935:270-283. |
| APA | Zhang, Bin,Wu, Hongjun,Feng, Dengguo,&Wang, Hong.(2006).Weaknesses of cosvd (2,128) stream cipher.Information security and cryptology - icisc 2005,3935,270-283. |
| MLA | Zhang, Bin,et al."Weaknesses of cosvd (2,128) stream cipher".Information security and cryptology - icisc 2005 3935(2006):270-283. |
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来源：中国科学院大学
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