Konferans bildirisi Açık Erişim

Impossible Differential Cryptanalysis of 16/18-Round Khudra

Karakoc, Ferhat; Sagdicoglu, Oznur Mut; Gonen, Mehmet Emin; Ersoy, Oguzhan


DataCite XML

<?xml version='1.0' encoding='utf-8'?>
<resource xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://datacite.org/schema/kernel-4" xsi:schemaLocation="http://datacite.org/schema/kernel-4 http://schema.datacite.org/meta/kernel-4.1/metadata.xsd">
  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/98209</identifier>
  <creators>
    <creator>
      <creatorName>Karakoc, Ferhat</creatorName>
      <givenName>Ferhat</givenName>
      <familyName>Karakoc</familyName>
      <affiliation>TUBITAK BILGEM UEKAE, PK 74, TR-41470 Gebze, Kocaeli, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Sagdicoglu, Oznur Mut</creatorName>
      <givenName>Oznur Mut</givenName>
      <familyName>Sagdicoglu</familyName>
      <affiliation>TUBITAK BILGEM UEKAE, PK 74, TR-41470 Gebze, Kocaeli, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Gonen, Mehmet Emin</creatorName>
      <givenName>Mehmet Emin</givenName>
      <familyName>Gonen</familyName>
    </creator>
    <creator>
      <creatorName>Ersoy, Oguzhan</creatorName>
      <givenName>Oguzhan</givenName>
      <familyName>Ersoy</familyName>
      <affiliation>Bogazici Univ, Istanbul, Turkey</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Impossible Differential Cryptanalysis Of 16/18-Round Khudra</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2017</publicationYear>
  <dates>
    <date dateType="Issued">2017-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Conference paper</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/98209</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1007/978-3-319-55714-4_3</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">Khudra is a recently proposed lightweight block cipher specifically dedicated for Field Programmable Gate Arrays (FPGAs) implementation. It is a 4-branch type-2 generalized Feistel structure (GFS) of 18 rounds with 64-bit block size and 80-bit security margin. This paper studies the security of Khudra against impossible differential cryptanalysis. In the single-key scenario, the best impossible differential attack given by the designers works for 11 rounds with 2(57) chosen plaintexts and 2(61) encryptions. In this paper, by exploiting the structure of Khudra and the redundancy in its key schedule, we significantly improve previously known results. First, we propose an impossible differential attack on 14-round Khudra with 2(54.06) chosen plaintexts, 2(50.26) encryptions and 2(49) memory. Then, we extend the attack by including pre-whitening keys with 2(59.03) known plaintexts, 2(67.06) time and 2(59.03) memory complexities. Finally, we present an impossible differential attack against 16-round Khudra where whitening-keys are omitted. The 16-round attack requires 2(49.58) chosen plaintexts, 2(79.26) encryptions and 2(64) memory. To the best of our knowledge, these attacks are the best known attacks in the single-key scenario.</description>
  </descriptions>
</resource>
23
10
görüntülenme
indirilme
Görüntülenme 23
İndirme 10
Veri hacmi 1.7 kB
Tekil görüntülenme 21
Tekil indirme 10

Alıntı yap