Security problem on arbitrated quantum signature schemes
Quantum Physics
2015-05-28 v1
Abstract
Until now, there have been developed many arbitrated quantum signature schemes implemented with a help of a trusted third party. In order to guarantee the unconditional security, most of them take advantage of the optimal quantum one-time encryption method based on Pauli operators. However, we in this paper point out that the previous schemes only provides a security against total break and actually show that there exists a simple existential forgery attack to validly modify the transmitted pair of message and signature. In addition, we also provide a simple method to recover the security against the proposed attack.
Cite
@article{arxiv.1106.5318,
title = {Security problem on arbitrated quantum signature schemes},
author = {Jeong Woon Choi and Ku-Young Chang and Dowon Hong},
journal= {arXiv preprint arXiv:1106.5318},
year = {2015}
}