Difference between revisions of "Serpent"
(Introduction, links. Comparison to Rijndael (AES)) 
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−  '''Serpent''' [[encryption]] algorithm designed by Ross Anderson, Eli Biham and Lars Knudsen as a candidate for the Advanced Encryption Standard [[AES]] competition, where it got second place with 59 votes ([[Rijndael]] got 86 votes, and was selected by [[NIST]] as the [[AES]]).  +  '''Serpent''' is an [[encryption]] algorithm designed by Ross Anderson, Eli Biham and Lars Knudsen as a candidate for the Advanced Encryption Standard [[AES]] competition, where it got second place with 59 votes ([[Rijndael]] got 86 votes, and was selected by [[NIST]] as the [[AES]]). 
Serpent uses a block size of 128 bits and supports a key size of 128, 192 or 256 bits.  Serpent uses a block size of 128 bits and supports a key size of 128, 192 or 256 bits.  
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Serpent is available as public domain, and can be freely used by anyone.  Serpent is available as public domain, and can be freely used by anyone.  
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== External Links ==  == External Links ==  
[http://www.cl.cam.ac.uk/~rja14/serpent.html Serpent Cipher Homepage]  [http://www.cl.cam.ac.uk/~rja14/serpent.html Serpent Cipher Homepage]  
[http://en.wikipedia.org/wiki/Serpent_(cipher) Wikipedia article on Serpent]  [http://en.wikipedia.org/wiki/Serpent_(cipher) Wikipedia article on Serpent] 
Revision as of 08:02, 17 December 2007
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Serpent is an encryption algorithm designed by Ross Anderson, Eli Biham and Lars Knudsen as a candidate for the Advanced Encryption Standard AES competition, where it got second place with 59 votes (Rijndael got 86 votes, and was selected by NIST as the AES).
Serpent uses a block size of 128 bits and supports a key size of 128, 192 or 256 bits.
Serpent and Rijndael are somewhat similar. The main difference is that Rijndael has fewer rounds (10, 12 or 14 (depending on key size) compared to 32 for Serpent), hence it is faster. Arguably, Serpent is more secure.
Serpent is available as public domain, and can be freely used by anyone.