公开(公告)号：US20240323023A1

公开(公告)日：2024-09-26

申请号：US18579216

申请日：2022-07-20

Applicant: CHINA UNIONPAY CO., LTD.

Inventor： Yongkai ZHOU ,  Yanming YANG ,  Hongbao LIU ,  Jianbin ZHENG ,  Yang YANG ,  Zhenyao QIU ,  Chen OUYANG ,  Ling JIN ,  Pengfei GAO ,  Dong CHENG ,  Fen ZOU ,  Hang YUAN ,  Qi WANG

IPC: H04L9/32 ,  G06F21/60

CPC classification number: H04L9/3234 ,  G06F21/602

Abstract: A method for sample alignment is applied to a first participant system, where a first trusted execution environment is deployed at the first participant system. The method includes, in the first trusted execution environment, obtaining at least one first sample identifier of the first participant system; through the first trusted execution environment, obtaining at least one second sample identifier of the second participant system from the second trusted execution environment, where the second trusted execution environment is deployed at the second participant system; in the first trusted execution environment, determining the first initial intersection of the at least one first sample identifier and the at least one second sample identifier and performing the shuffle processing on all first target sample identifiers in the first initial intersection to obtain the first target intersection; and based on the first target intersection, determining the first sample alignment result.