Abstract
The hash function is an important branch of cryptology. The controlled quantum walk-based hash function, which is presented by Li, is a kind of novel hash function. It is safe, flexible, and compatible. All existing controlled quantum walk-based hash functions are controlled by one bit of message in each step. To process the message in batch amounts, in this paper, the controlled alternate quantum walk-based block hash function is presented by using the time-position-dependent controlled alternate quantum walk on the complete graph with self-loops. The presented hash function accelerates the hash processing dramatically, so it is more efficient. That could save many resources and execution time further.
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The datasets generated during and/or analyzed during the current study are available from https://pan.baidu.com/s/1LrWGPPOkJozcD-9OEubseQ?pwd=0gm8.
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Acknowledgements
This work is supported by the Fundamental Research Funds for the Central Universities (Grant No. NS2023047), the National Key Research and Development Program of China (Grant No. 2020YFB1005500), NSFC (Grant Nos. 62101270, 61901218, 61802025, 62071015), National Key Research and Development Program of China (Grant No.2020YFB1005504).
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Li, D., Ding, P., Zhou, Y. et al. Controlled alternate quantum walk-based block hash function. Quantum Inf Process 22, 363 (2023). https://doi.org/10.1007/s11128-023-04123-w
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DOI: https://doi.org/10.1007/s11128-023-04123-w