Differential cryptanalysis of new Qamal encryption algorithm

Authors

  • Kunbolat Algazy Institute of Information and Computational Technologies of the Committee of Science of the Ministry of Education and Science of the Republic of Kazakhstan, Almaty
  • Ludmila Babenko
  • Rustem Biyashev Institute of Information and Computational Technologies of the Committee of Science of the Ministry of Education and Science of the Republic of Kazakhstan, Almaty
  • Evgeniya Ishchukova Institute of Computer Technologies and Information Security of the Southern Federal University, Taganrog, Russia
  • Ryszard Romaniuk Warsaw University of Technology, Poland
  • Nursulu Kapalova Institute of Information and Computational Technologies of the Committee of Science of the Ministry of Education and Science of the Republic of Kazakhstan, Almaty
  • Andrzej Smolarz Lublin University of Technology http://orcid.org/0000-0002-6473-9627
  • Saule Nysynbaeva Institute of Information and Computational Technologies of the Committee of Science of the Ministry of Education and Science of the Republic of Kazakhstan, Almaty

Abstract

Currently, the Republic of Kazakhstan is developing a new standard for symmetric data encryption. One of the candidates for the role of the standard is the Qamal encryption algorithm developed by the Institute of Information and Computer Technologies (Almaty, Republic of Kazakhstan). The article describes the algorithm. Differential properties of the main operations that make up the Qamal cypher are considered in the questions of stability. We have shown that for a version with a 128-bit data block and the same secret key size for three rounds of encryption it is difficult to find the right pairs of texts with a probability of 2–120, which makes differential cryptanalysis not applicable to the Qamal cypher

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Published

2024-04-19

Issue

Vol. 66 No. 4 (2020)

Section

Cryptography and Cybersecurity

License

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