Quantum Circuit Implementation and Resource Analysis for Triple Data Encryption Standard (DES) (Triple-DES)

Gyeongju Song, Seyoung Yoon and Hwajeong Seo ()
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Gyeongju Song: Department of Information Computer Engineering, Hansung University, Seoul 02876, Republic of Korea
Seyoung Yoon: Department of Convergence Security, Hansung University, Seoul 02876, Republic of Korea
Hwajeong Seo: Department of Convergence Security, Hansung University, Seoul 02876, Republic of Korea

Mathematics, 2025, vol. 13, issue 7, 1-16

Abstract: In this paper, various types of quantum circuits for DES components are proposed to analyze the trade-offs in quantum resources for both DES and TDES block ciphers. Specifically, multiple optimized structures within the DES framework are devised, and by integrating different elements from each type, 34 possible configurations for the DES block cipher are generated. The required quantum resources for these configurations are then estimated, identifying not only qubit-optimized and depth-optimized circuits but also those achieving a balanced trade-off between qubit and circuit depth. Building on these optimized DES designs, TDES circuits are constructed, and the corresponding cost of a Grover-based attack on the TDES is estimated.

Keywords: quantum implementation; Grover algorithm; TDES; DES (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2025
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