Paper 2022/647

Quantum Implementation and Analysis of DEFAULT

Kyungbae Jang, Hansung University, Seoul, South Korea
Anubhab Baksi, Nanyang Technological University
Jakub Breier, Silicon Austria Labs, Graz, Austria
Hwajeong Seo, Division of IT Convergence Engineering
Anupam Chattopadhyay, Nanyang Technological University

In this paper, we present the quantum implementation and analysis of the recently proposed block cipher, DEFAULT. DEFAULT is consisted of two components, namely DEFAULT-LAYER and DEFAULT-CORE. Two instances of DEFAULT-LAYER is used before and after DEFAULT-CORE (the so-called `sandwich construction'). We discuss about the the various choices made to keep the cost for the basic quantum circuit and that of the Grover's oracle search, and compare it with the levels of quantum security specified by the United States' National Institute of Standards and Technology (NIST). All in all, our work nicely fits in the research trend of finding the possible quantum vulnerability of symmetric key ciphers.

Available format(s)
Secret-key cryptography
Publication info
block cipher quantum circuit default grover's search
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starj1023 @ gmail com
anubhab001 @ e ntu edu sg
jbreier @ jbreier com
hwajeong84 @ gmail com
anupam @ ntu edu sg
2022-09-14: last of 5 revisions
2022-05-25: received
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      author = {Kyungbae Jang and Anubhab Baksi and Jakub Breier and Hwajeong Seo and Anupam Chattopadhyay},
      title = {Quantum Implementation and Analysis of DEFAULT},
      howpublished = {Cryptology ePrint Archive, Paper 2022/647},
      year = {2022},
      note = {\url{}},
      url = {}
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