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SHARK - 版本历史
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<p><b>新页面</b></p><div><!-- {{alternateuses}} --><br />
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{{區塊加解密方塊<br />
| name = SHARK<br />
| designers = [[Vincent Rijmen]], [[Joan Daemen]], [[Bart Preneel]], [[Antoon Bosselaers]], [[Erik De Win]]<br />
| publish date = 1996年<br />
| derived from =<br />
| derived to = [[KHAZAD]], [[高级加密标准|Rijndael]]<br />
| related to =<br />
| key size = 128 位元<br />
| block size = 64 位元<br />
| structure = [[置換組合網路]]<br />
| rounds = 6<br />
| cryptanalysis =<br />
}}<br />
<br />
在[[密碼學]]裡，'''SHARK'''被認為是一種[[高级加密标准|Rijndael]]加密法（[[高級加密標準]]）前身的[[區塊加密]]。<br />
<br />
SHARK有64位元[[區塊大小(密碼學)|區塊大小]]與128位元[[密碼|密鑰長度]]。它是個6迴圈[[SPN|SP網路]]，利用線性與非線性轉換層輪換[[密碼|密鑰]]混合階段。線性轉換使用[[MDS矩陣]]代表[[Reed-Solomon]][[錯誤糾正代碼]]以保證適度[[散亂]]。非線性層是以8個來自函數''F(x) = x<sup>-1</sup>''於''GF(2<sup>8</sup>)''（[[有限域]]2的8次方）的8×8位元[[S-box]]組成。<br />
<br />
5迴圈的 SHARK 修改版可透過[[插值攻擊]](Jakobsen and Knudsen, 1997) 破解。<br />
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== 參見 ==<br />
* [[KHAZAD]]<br />
* [[Square (cipher)|Square]]<br />
<br />
== 腳註參考 ==<br />
* {{cite conference<br />
| author = [[Vincent Rijmen]], [[Joan Daemen]], [[Bart Preneel]], Anton Bosselaers, Erik De Win<br />
| title = The Cipher SHARK<br />
| booktitle = 3rd International Workshop on [[Fast Software Encryption]] (FSE '96)<br />
| pages = pp.99–111<br />
| publisher = [[Springer-Verlag]]<br />
| date = February 1996<br />
| location = [[Cambridge]]<br />
| url = http://citeseer.ist.psu.edu/rijmen96cipher.html<br />
| format = [[PDF]]/[[PostScript]]<br />
| accessdate = 2007-03-06<br />
| archive-date = 2008-05-03<br />
| archive-url = https://web.archive.org/web/20080503071203/http://citeseer.ist.psu.edu/rijmen96cipher.html<br />
| dead-url = no<br />
}}<br />
* {{cite conference<br />
| author = [[Thomas Jakobsen|T. Jakobsen]], [[Lars Knudsen|L.R. Knudsen]]<br />
| title = The Interpolation Attack on Block Ciphers<br />
| booktitle = 4th International Workshop on [[Fast Software Encryption]] (FSE '97)<br />
| pages = pp.28–40<br />
| publisher = Springer-Verlag<br />
| date = January 1997<br />
| location = [[Haifa]]<br />
| url = http://citeseer.ist.psu.edu/jakobsen97interpolation.html<br />
| format = PDF/PostScript<br />
| accessdate = 2007-01-23<br />
| archive-date = 2008-05-11<br />
| archive-url = https://web.archive.org/web/20080511123752/http://citeseer.ist.psu.edu/jakobsen97interpolation.html<br />
| dead-url = no<br />
}}<br />
* {{ cite book<br />
| author = Joan Daemen, Vincent Rijmen<br />
| title = The Design of Rijndael: AES—The Advanced Encryption Standard<br />
| url = https://archive.org/details/designofrijndael0000daem<br />
| publisher = Springer-Verlag<br />
| date = 2002<br />
| id = ISBN 3-540-42580-2 }}<br />
<br />
== 外部連結 ==<br />
* {{en}}[http://www.users.zetnet.co.uk/hopwood/crypto/scan/cs.html#SHARK-A SCAN's entry for SHARK]{{Wayback|url=http://www.users.zetnet.co.uk/hopwood/crypto/scan/cs.html#SHARK-A |date=20120125020242 }}<br />
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{{Crypto-stub}}<br />
{{分组密码}}<br />
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[[Category:區塊加密]]</div>
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