A Protocol for the Quantum Private Comparison of Equality with χ-Type State |
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Authors: | Wen Liu Yong-Bin Wang Zheng-Tao Jiang Yi-Zhen Cao |
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Institution: | 1. School of Computer Science, Communication University of China, Beijing, 100024, China
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Abstract: | We present a new quantum protocol for comparing the equal information with the help of a semi-honest third party (TP). Different
from previous protocols, we utilize the four-particle χ-type states as the information carriers. Various kinds of outside attacks and participant attacks are discussed in detail.
One party cannot learn the other’s private information. The TP cannot learn any information about the private information,
even about the comparison result or the length of secret inputs. |
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Keywords: | |
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