An Improved Arbitrated Quantum Scheme with Bell States |
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Authors: | Yingying Zhang Jiwen Zeng |
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Institution: | 1.School of Mathematical Sciences,Xiamen University,Xiamen,China;2.School of Mathematical Science,Xinjiang Normal University,Urumqi,China |
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Abstract: | In 2014, Liu et al. (In. J. Thero. phys. 53(5); 1569–1579. 2014) proposed an arbitrated quantum signature scheme (Liu’14) with Bell states by utilizing a new quantum one-time pad algorithm. It claimed that it can resist the receiver’s existential forgery attack and no party has chances to change the message and its signature without being discovered. Recently, Xu and Zou (In. J. Thero. phys. 55; 4142-4156. 2016) analyzed above scheme and demonstrated that it can’t resist the signer’s disavowal and the receiver’s existential forgery. But, the authors didn’t give a method to solve it. In this paper, we will give an improved arbitrated quantum signature scheme to make up the loopholes in Liu’14. |
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