公开(公告)号：US20240362251A1

公开(公告)日：2024-10-31

申请号：US18631790

申请日：2024-04-10

Applicant: Huazhong University of Science and Technology

Inventor： Peng XU ,  Yinjia PI ,  Wei WANG ,  Shuning XU ,  Yubo ZHENG ,  Hai JIN

IPC: G06F16/27

CPC classification number: G06F16/27

Abstract: A method and system for automatic deletion of information based on time synchronization and trusted counting is provided, the method including: defining different data structures including configurations in a normalized manner; setting triggering conditions for automatic information deletion, including conditions for automatic deletion based on time synchronization and/or based on trusted counting; maintaining synchrony of the configurations across different domains; and after satisfying the triggering conditions, making an information source domain and/or an information propagation domain perform the automatic information deletion. Considering that existing data deletion mechanisms cannot delete information according to preset retention periods, the present application employs synchrony across system clocks to perform automatic deletion of authorization information under circulation after a certain time period, and further limits a circulation count for information of interest so as to ensure that the information and its copies are all deleted after reaching a preset maximum permittable circulation count.

公开(公告)号：US20240330506A1

公开(公告)日：2024-10-03

申请号：US18603202

申请日：2024-03-12

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Peng XU ,  Runze XU ,  Wei WANG ,  Yinjia PI ,  Tianyang CHEN ,  Hai JIN

IPC: G06F21/62 ,  H04L9/08 ,  H04L9/32

CPC classification number: G06F21/6245 ,  H04L9/088 ,  H04L9/3247

Abstract: A method and system for deleting multi-copy personal data efficiently and securely is provided, wherein the personal data and its subject identifier are signed and uploaded to data domains and stored as personal data copies; the personal data copies along with its source and destination data are circulated among the data domains; the data domain receiving a deletion instruction transmits the deletion instruction to every relevant data domains based on the identifier of the personal data subject and the destination data and then performs deletion; and after completing the deletion, the data domain deposit its domain identifier and feedback data it receives into a log, and feed the log back to its superior data domain. And the system of the present disclosure includes a plurality of data domains that can perform the above operations, thereby realizing association-based storage, association-based deletion and verification of association-based deletion of multi-copy personal data.