Quantum digital signature combines quantum theory with classical digital signature. The main goal of this field is to take advantage of quantum effects to provide unconditionally secure signature. We present a quantum signature scheme with message recovery without using entangle effect. The most important property of the proposed scheme is that it is not necessary for the scheme to use Greenberger-Horne-Zeilinger states. The present scheme utilizes single photons to achieve the aim of signature and verification. The security of the scheme relies on the quantum one-time pad and quantum key distribution. The efficiency analysis shows that the proposed scheme is an efficient scheme.
@article{arxiv.quant-ph/0511224,
title = {Quantum signature scheme with single photons},
author = {Jian Wang and Quan Zhang and Chao-jing Tang},
journal= {arXiv preprint arXiv:quant-ph/0511224},
year = {2011}
}