Difference between revisions of "Cheetah"

From The ECRYPT Hash Function Website
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(Semi-free Start Collision for 12-round Cheetah-256)
 
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* Author(s): Dmitry Khovratovich, Alex Biryukov, Ivica Nikolić
 
* Author(s): Dmitry Khovratovich, Alex Biryukov, Ivica Nikolić
<!--
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* Website: [http://cryptolux.org/Cheetah http://cryptolux.org/Cheetah]
* Website:
 
-->
 
 
* NIST submission package: [http://csrc.nist.gov/groups/ST/hash/sha-3/Round1/documents/Cheetah.zip Cheetah.zip]
 
* NIST submission package: [http://csrc.nist.gov/groups/ST/hash/sha-3/Round1/documents/Cheetah.zip Cheetah.zip]
  
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== Cryptanalysis ==
 
== Cryptanalysis ==
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{| border="1" cellpadding="4" cellspacing="0" class="wikitable" style="text-align:center"                 
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|- style="background:#efefef;"                 
 +
| Type of Analysis || Hash Function Part || Hash Size (n) || Parameters/Variants || Compression Function Calls || Memory Requirements || Reference
 +
|-                   
 +
| length-extension || hash || all ||  || - || - || [http://ehash.iaik.tugraz.at/uploads/d/d9/Cheetah_length-extension.txt Gligoroski]
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|-
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| semi-free-start collision || compression || 256 || 12 rounds || 2<sup>24</sup> || - || [http://ehash.iaik.tugraz.at/uploads/0/08/Cheetah256-12r.txt Wu]
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|-                                   
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|}                   
 +
 +
A description of this table is given [http://ehash.iaik.tugraz.at/wiki/Cryptanalysis_Categories#Individual_Hash_Function_Tables here].
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<bibtex>
 
<bibtex>
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   howpublished = {OFFICIAL COMMENT (local link)},
 
   howpublished = {OFFICIAL COMMENT (local link)},
 
   year = {2008},
 
   year = {2008},
 +
}
 +
</bibtex>
 +
 +
<bibtex>
 +
@misc{CheetahW09,
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  author    = {Shuang Wu},
 +
  title    = {Semi-free Start Collision for 12-round Cheetah-256},
 +
  url = {http://ehash.iaik.tugraz.at/uploads/0/08/Cheetah256-12r.txt},
 +
  howpublished = {NIST mailing list (local link)},
 +
  year = {2009},
 
}
 
}
 
</bibtex>
 
</bibtex>

Latest revision as of 07:29, 10 July 2009

1 The algorithm


Dmitry Khovratovich, Alex Biryukov, Ivica Nikolić - The Hash Function Cheetah: Specification and Supporting Documentation

,2008
http://ehash.iaik.tugraz.at/uploads/c/ca/Cheetah.pdf
Bibtex
Author : Dmitry Khovratovich, Alex Biryukov, Ivica Nikolić
Title : The Hash Function Cheetah: Specification and Supporting Documentation
In : -
Address :
Date : 2008


2 Cryptanalysis

Type of Analysis Hash Function Part Hash Size (n) Parameters/Variants Compression Function Calls Memory Requirements Reference
length-extension hash all - - Gligoroski
semi-free-start collision compression 256 12 rounds 224 - Wu

A description of this table is given here.


Danilo Gligoroski - Cheetah hash function is not resistant against length-extension attack

,2008
http://ehash.iaik.tugraz.at/uploads/d/d9/Cheetah_length-extension.txt
Bibtex
Author : Danilo Gligoroski
Title : Cheetah hash function is not resistant against length-extension attack
In : -
Address :
Date : 2008

Shuang Wu - Semi-free Start Collision for 12-round Cheetah-256

,2009
http://ehash.iaik.tugraz.at/uploads/0/08/Cheetah256-12r.txt
Bibtex
Author : Shuang Wu
Title : Semi-free Start Collision for 12-round Cheetah-256
In : -
Address :
Date : 2009