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Quantum Information Processing

Some efficient quantum circuit implementations of Camellia

  • 01-04-2022
Published in:
Authors
Jian Zou
Zihao Wei
Siwei Sun
Yiyuan Luo
Qian Liu
Wenling Wu
Published in
Quantum Information Processing | Issue 4/2022

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Abstract

The rapid advancement of quantum computing has raised significant security concerns in cryptography, prompting the development of post-quantum cryptography (PQC) to counteract potential quantum attacks on symmetric ciphers. This article focuses on constructing efficient quantum circuit implementations of the Camellia block cipher, a cryptographic algorithm that adopts a Feistel–SPN structure. The authors propose both memory-efficient and depth-efficient quantum circuits for Camellia, leveraging tower field techniques and in-place implementations to optimize resource usage. The memory-efficient circuits aim to minimize the number of qubits required, while the depth-efficient circuits focus on reducing the T-depth, which is a critical metric for quantum computational time. The article also introduces new techniques for implementing the substitution layer (S-box) of Camellia, demonstrating how these optimizations can lead to significant improvements in the efficiency of quantum circuits for cryptographic algorithms.
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previous article An efficient hybrid hash based privacy amplification algorithm for quantum key distribution
next article The relation between entanglement measure and coherence measure based on Hellinger distance
Title
Some efficient quantum circuit implementations of Camellia
Authors
Jian Zou
Zihao Wei
Siwei Sun
Yiyuan Luo
Qian Liu
Wenling Wu
Publication date
01-04-2022
Publisher
Springer US
Published in
Quantum Information Processing / Issue 4/2022
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-022-03477-x
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