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Article: New differential cryptanalytic results for reduced-round CAST-128

TitleNew differential cryptanalytic results for reduced-round CAST-128
Authors
KeywordsBlock Cipher
Cast-128
Differential Cryptanalysis
Weak Key
Issue Date2010
PublisherOxford University Press. The Journal's web site is located at http://ietfec.oxfordjournals.org/
Citation
Ieice Transactions On Fundamentals Of Electronics, Communications And Computer Sciences, 2010, v. E93-A n. 12, p. 2744-2754 How to Cite?
AbstractCAST-128 is a block cipher used in a number of products, notably as the default cipher in some versions of GPG and PGP. It has been approved for Canadian government use by the Communications Security Establishment. Haruki Seki et al. found 2-round differential characteristics and they can attack 5-round CAST-128. In this paper, we studied the properties of round functions F1 and F3 in CAST-128, and identified differential characteristics for F1 round function and F3 round function. So we identified a 6-round differential characteristic with probability 2-53 under 2-23.8 of the total key space. Then based on 6-round differential characteristic, we can attack 8-round CAST-128 with key sizes greater than or equal to 72 bits and 9-round CAST-128 with key sizes greater than or equal to 104 bits. We give the summary of attacks on reduced-round CAST-128 in Table 10. Copyright © 2010 The Institute of Electronics, Information and Communication Engineers.
Persistent Identifierhttp://hdl.handle.net/10722/152449
ISSN
2012 Impact Factor: 0.238
2015 SCImago Journal Rankings: 0.215
ISI Accession Number ID
Funding AgencyGrant Number
National Natural Science Foundation of China2007CB807902
90604036
National Outstanding Young Scientist60525201
Funding Information:

Supported by 973 Program No 2007CB807902, National Natural Science Foundation of China Key Project No 90604036 National Outstanding Young Scientist No 60525201

References

 

DC FieldValueLanguage
dc.contributor.authorWang, Men_US
dc.contributor.authorWang, Xen_US
dc.contributor.authorChow, KPen_US
dc.contributor.authorHui, LCKen_US
dc.date.accessioned2012-06-26T06:39:12Z-
dc.date.available2012-06-26T06:39:12Z-
dc.date.issued2010en_US
dc.identifier.citationIeice Transactions On Fundamentals Of Electronics, Communications And Computer Sciences, 2010, v. E93-A n. 12, p. 2744-2754en_US
dc.identifier.issn0916-8508en_US
dc.identifier.urihttp://hdl.handle.net/10722/152449-
dc.description.abstractCAST-128 is a block cipher used in a number of products, notably as the default cipher in some versions of GPG and PGP. It has been approved for Canadian government use by the Communications Security Establishment. Haruki Seki et al. found 2-round differential characteristics and they can attack 5-round CAST-128. In this paper, we studied the properties of round functions F1 and F3 in CAST-128, and identified differential characteristics for F1 round function and F3 round function. So we identified a 6-round differential characteristic with probability 2-53 under 2-23.8 of the total key space. Then based on 6-round differential characteristic, we can attack 8-round CAST-128 with key sizes greater than or equal to 72 bits and 9-round CAST-128 with key sizes greater than or equal to 104 bits. We give the summary of attacks on reduced-round CAST-128 in Table 10. Copyright © 2010 The Institute of Electronics, Information and Communication Engineers.en_US
dc.languageengen_US
dc.publisherOxford University Press. The Journal's web site is located at http://ietfec.oxfordjournals.org/en_US
dc.relation.ispartofIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesen_US
dc.subjectBlock Cipheren_US
dc.subjectCast-128en_US
dc.subjectDifferential Cryptanalysisen_US
dc.subjectWeak Keyen_US
dc.titleNew differential cryptanalytic results for reduced-round CAST-128en_US
dc.typeArticleen_US
dc.identifier.emailChow, KP:chow@cs.hku.hken_US
dc.identifier.emailHui, LCK:hui@cs.hku.hken_US
dc.identifier.authorityChow, KP=rp00111en_US
dc.identifier.authorityHui, LCK=rp00120en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1587/transfun.E93.A.2744en_US
dc.identifier.scopuseid_2-s2.0-78650019789en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78650019789&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volumeE93-Aen_US
dc.identifier.issue12en_US
dc.identifier.spage2744en_US
dc.identifier.epage2754en_US
dc.identifier.isiWOS:000285434400051-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridWang, M=23092650300en_US
dc.identifier.scopusauthoridWang, X=35103979500en_US
dc.identifier.scopusauthoridChow, KP=7202180751en_US
dc.identifier.scopusauthoridHui, LCK=8905728300en_US

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