2011/06/27 by Jeong Woon Choi, Ku-Young Chang, Dowon Hong · 1 citation
Computer Science · Mathematics · Physics and Astronomy · #Computer science #Computer security #Encryption #Mathematics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum mechanics #Signature (topology) #Simple (philosophy) #quant-ph
paper · pdf · doi:10.1103/physreva.84.062330
arxiv created 2011/06/27 · openalex publication_date 2011/12/29 · arxiv updated 2015/05/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Many arbitrated quantum signature schemes implemented with the help of a trusted third party have been developed up to now. In order to guarantee unconditional security, most of them take advantage of the optimal quantum one-time encryption based on Pauli operators. However, in this paper we point out that the previous schemes provide security only against a total break attack and show in fact that there exists an existential forgery attack that can validly modify the transmitted pair of message and signature. In addition, we also provide a simple method to recover security against the proposed attack.