科研之友
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摘要
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 chi-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.
- 出版日期2012-1
- 单位中国传媒大学
