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来自维基百科,自由的百科全书
Serpent是一種對稱式分組加密演算法,是高级加密标准(AES)的候選者之一,其順序僅次於Rijndael演算法。設計者為羅斯·安德森、艾力·畢漢姆及拉爾斯·克努森。
![]() Serpent的线性混合阶段 | |
概述 | |
---|---|
设计者 | 羅斯·安德森、艾力·畢漢姆、拉爾斯·克努森 |
首次发布 | 1998年8月21日 |
衍生自 | Square |
认证 | AES决赛算法 |
密码细节 | |
密钥长度 | 128、192、256位 |
分组长度 | 128位 |
重复回数 | 32 |
最佳公开破解 | |
All publicly known attacks are computationally infeasible, and none of them affect the full 32-round Serpent. A 2011 attack breaks 11 round Serpent (all key sizes) with 2116 known plaintexts, 2107.5 time and 2104 memory (as described in [1]). The same paper also describes two attacks which break 12 rounds of Serpent-256. The first requires 2118 known plaintexts, 2228.8 time and 2228 memory. The other attack requires 2116 known plaintexts and 2121 memory but also requires 2237.5 time. |
与其他進入AES評選名單的演算法一樣,Serpent的區塊長度為128位元,支援的密鑰長度為128、192和256位元。
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