Difference between revisions of "HAS-160"

From The ECRYPT Hash Function Website
(Specification)
m (elated-Key Rectangle Attack of the Full 80-Round HAS-160 Encryption Mode)
 
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=== Others ===
 
=== Others ===
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<bibtex>
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@misc{cryptoeprint:2009:335,
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    author = {Ewan Fleischmann and Michael Gorski and Stefan Lucks},
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    title = {Related-Key Rectangle Attack of the Full 80-Round HAS-160 Encryption Mode},
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    howpublished = {Cryptology ePrint Archive, Report 2009/335},
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    year = {2009},
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    note = {\url{http://eprint.iacr.org/}},
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    url = {http://eprint.iacr.org/2009/335.pdf},
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    abstract = { In this paper we investigate the security of the encryption mode of the HAS-160 hash function. HAS-160 is a Korean hash standard which is widely used in Korea's industry. The structure of HAS-160 is similar to SHA-1 but includes some improvements. The encryption mode of HAS-160 is defined similarly as the encryption mode of SHA-1 that is called SHACAL-1. In 2006, Dunkelman et. al. successfully broke the full 80-round SHACAL-1. In this paper, we present the first cryptographic attack that breaks the encryption mode of the full 80-round HAS-160. SHACAL-1 and the encryption mode of HAS-160 are both blockciphers with key size 512 bits and plain-/ciphertext size of 160 bits.
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We will apply a key recovery attack that needs about 2^{155} chosen plaintexts and 2^{375.98} 80-round HAS-160 encryptions. The attack does not aim for a collision, preimage or 2nd-preimage attack, but it shows that HAS-160 used as a block cipher can be differentiated from an ideal cipher faster than exhaustive search.},
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}
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</bibtex>

Latest revision as of 13:29, 9 July 2009

1 Specification

2 Cryptanalysis

2.1 Best Known Results

The best known attack on HAS-160 is the collision attack of Mendel and Rijmen for 59 (out of 80) steps with a complexity of 255. The best collision example for 53 steps of HAS-160 was also presented by Mendel and Rijmen.


2.2 Generic Attacks


2.3 Collision Attacks

Florian Mendel, Vincent Rijmen - Colliding Message Pair for 53-Step HAS-160

ICISC 4817:324-334,2007
http://dx.doi.org/10.1007/978-3-540-76788-6_26
Bibtex
Author : Florian Mendel, Vincent Rijmen
Title : Colliding Message Pair for 53-Step HAS-160
In : ICISC -
Address :
Date : 2007

Hong-Su Cho, Sangwoo Park, Soo Hak Sung, Aaram Yun - Collision Search Attack for 53-Step HAS-160

ICISC 4296:286-295,2006
http://dx.doi.org/10.1007/11927587_24
Bibtex
Author : Hong-Su Cho, Sangwoo Park, Soo Hak Sung, Aaram Yun
Title : Collision Search Attack for 53-Step HAS-160
In : ICISC -
Address :
Date : 2006

Aaram Yun, Soo Hak Sung, Sangwoo Park, Donghoon Chang, Seokhie Hong, Hong-Su Cho - Finding Collision on 45-Step HAS-160

ICISC 3935:146-155,2005
http://dx.doi.org/10.1007/11734727_13
Bibtex
Author : Aaram Yun, Soo Hak Sung, Sangwoo Park, Donghoon Chang, Seokhie Hong, Hong-Su Cho
Title : Finding Collision on 45-Step HAS-160
In : ICISC -
Address :
Date : 2005

2.4 Second Preimage Attacks


2.5 Preimage Attacks


2.6 Others

Ewan Fleischmann, Michael Gorski, Stefan Lucks - Related-Key Rectangle Attack of the Full 80-Round HAS-160 Encryption Mode

,2009
http://eprint.iacr.org/2009/335.pdf
Bibtex
Author : Ewan Fleischmann, Michael Gorski, Stefan Lucks
Title : Related-Key Rectangle Attack of the Full 80-Round HAS-160 Encryption Mode
In : -
Address :
Date : 2009