Improving the security of arbitrated quantum signature protocols

2011/07/13 by Zhiwei Sun, Sun, Zhiwei, Ruigang Du +3 · 1 citation
Computer Science · Physics and Astronomy · #FOS: Physical sciences #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum Physics (quant-ph) #quant-ph

paper · pdf · doi:10.48550/arxiv.1107.2459

6 pages, 1 table

openalex publication_date 2011/07/13 · arxiv created 2011/10/13 · arxiv updated 2011/10/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Arbitrated quantum signatures (AQS), for signing quantum message, have been proposed. It was claimed that the AQS schemes could guarantee unconditional security. However, in this paper, we show that all the presented AQS protocols are insecure if quantum one-time pad encryption is used where the signer Alice can always successfully acquire Bob's secret key and disavow any of her signatures. The detailed attack strategies and security analysis are described. Furthermore, the original version of the protocols is revised and accordingly the security of the AQS protocols are improved. And meanwhile we present a method to against Alice's disavowal proposed by Gao et al. (arXiv:1106.4398v1).

Citations

• Cryptanalysis of the arbitrated quantum signature protocols

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• Secure and Efficient Quantum Signature Scheme Based on the Controlled Unitary Operations Encryption

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