公开(公告)号：US11825001B2

公开(公告)日：2023-11-21

申请号：US17918890

申请日：2021-09-02

Applicant: CHINA UNIONPAY CO., LTD.

Inventor： Zhenyao Qiu ,  Yang Yang ,  Zhou Chen ,  Zili Huang ,  Lu Xiong

IPC: H04L9/00 ,  H04L9/30 ,  H04L9/32

CPC classification number: H04L9/50 ,  H04L9/30 ,  H04L9/3271

Abstract: A blockchain based numerical value ranking method includes: using, by a first participant, a public key of the first participant to encrypt a private value of the first participant to obtain an encrypted text of the first participant; obtaining encrypted texts of other participants, and generating a challenge value having a preset bit length; based on the challenge value and the private value of the first participant, and the encrypted texts and public keys of the other participants, determining mixed results of the first participant with respect to the other participants; and determining a numerical value ranking result between the first participant and a second participant based on the mixed result of the second participant with respect to the first participant.

公开(公告)号：US11057483B2

公开(公告)日：2021-07-06

申请号：US16958781

申请日：2018-10-10

Applicant: CHINA UNIONPAY CO., LTD.

Inventor： Yang Yang ,  Zhou Chen ,  Haoran Zhu ,  Zili Huang

IPC: H04L29/08 ,  H04L29/06

Abstract: In embodiments, a server receives an HTTP protocol-based access request sent by the client; when the server determines that the access request comprises a preset identifier and the current identifier value corresponding to the preset identifier matches any of historical identifier values in a historical identifier set stored in the server, the server determines a user seed from the historical identifier set according to the current identifier value, the historical identifier set comprising a corresponding relationship between historical identifier values and user seeds, the any of historical identifier values being generated by the server on the basis of a user seed and a random number corresponding to the historical identifier value, and the user seed being used for identifying a same user recognized by the server on the basis of the access request; the server tracks an access behavior of the user seed.