Abstract
Digital signature plays an important role in cryptography. Many quantum digital signature (QDS) schemes have been proposed up to now since the security of classic digital signature (CDS) schemes becomes more and more vulnerable with the development of quantum computing algorithms. Most of the existing quantum signature schemes are based on probabilistic comparison of quantum states, which makes the schemes very complicated. In this paper, we propose a new QDS scheme based on local indistinguishability of orthogonal product states. In the scheme, the receiver cooperates with the arbitrator to verify the valid of the signature. The analysis of security and efficiency shows that our scheme is secure and efficient.
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