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Cryptanalysis of reduced QTL block cipher
Faculty of Mathematical Sciences and Computer, Kharazmi University, Tehran, Iran.
Shahid Rajaee Teacher Training University, Tehran, Iran ; Institute for Research in Fundamental Sciences (IPM), Tehran, Iran.
RISE - Research Institutes of Sweden, ICT, SICS.
2017 (English)In: Microprocessors and microsystems, ISSN 0141-9331, E-ISSN 1872-9436, Vol. 52, 34-48 p.Article in journal (Refereed) Published
Abstract [en]

Recently, a new ultra lightweight block cipher called QTL has been proposed. The authors claim to achieve a fast diffusion in QTL by using a new variant of a generalized Feistel network structure that changes all block messages in one iterative round in contrast to traditional Feistel-type structures changing only half of block messages. In this paper, we evaluate the security claims of the designers and show that their claims are not valid as QTL is vulnerable to the standard statistical attacks on block ciphers.

Place, publisher, year, edition, pages
2017. Vol. 52, 34-48 p.
Keyword [en]
Differential cryptanalysis, Linear cryptanalysis, Mixed Integer Linear Programming (MILP), QTL, Integer programming, Lyapunov methods, Security of data, Fast diffusion, Generalized feistel, Mixed-integer linear programming, Statistical attacks, Type structures, Ultra lightweights, Cryptography
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-30277DOI: 10.1016/j.micpro.2017.05.007Scopus ID: 2-s2.0-85020045361OAI: oai:DiVA.org:ri-30277DiVA: diva2:1130804
Available from: 2017-08-11 Created: 2017-08-11 Last updated: 2017-08-11Bibliographically approved

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