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Weakness of lightweight block ciphers mCrypton and LED against biclique cryptanalysis

Authors
Jeong, KitaeKang, HyungChulLee, ChanghoonSung, JaechulHong, SeokhieLim, Jong In
Issue Date
7월-2015
Publisher
SPRINGER
Keywords
Block cipher; mCrypton; LED; Biclique; Cryptanalysis
Citation
PEER-TO-PEER NETWORKING AND APPLICATIONS, v.8, no.4, pp.716 - 732
Indexed
SCIE
SCOPUS
Journal Title
PEER-TO-PEER NETWORKING AND APPLICATIONS
Volume
8
Number
4
Start Page
716
End Page
732
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/93149
DOI
10.1007/s12083-013-0208-4
ISSN
1936-6442
Abstract
In this paper, we evaluate the security of lightweight block ciphers mCrypton and LED against biclique cryptanalysis. In cases of mCryton-64/96/128, our attacks require computational complexities of and , respectively. These results are the first known biclique cryptanalytic results on mCrypton. The attack on a 29-round reduced LED-64 needs 29-round reduced LED-64 encryptions. In the cases of LED-80/96/128, we propose the attacks on two versions. First, to recover the secret key of 45-round reduced LED-80/96/128, our attacks require computational complexities of and , respectively. To attack the full version, we require computational complexities of and , respectively. However, in these cases, we need the full codebook. These results are superior to known biclique cryptanalytic results on LED.
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