Public key certificate updating method, terminal device, and storage medium

The method addresses inefficiencies in public key certificate updates by confirming status and downloading upon data service or signature receipt, ensuring timely and efficient verification without additional power consumption.

WO2026146966A1PCT designated stage Publication Date: 2026-07-09SAMSUNG ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SAMSUNG ELECTRONICS CO LTD
Filing Date
2025-12-10
Publication Date
2026-07-09

AI Technical Summary

Technical Problem

Existing methods for updating public key certificates in terminals are inefficient, leading to untimely updates, excessive power consumption, and resource wastage due to constant network connections, and fail to ensure timely digital signature verification for emergency messages.

Method used

A method for confirming the status of public key certificates upon data service establishment or digital signature receipt, followed by downloading and saving the latest certificates from a network entity, eliminating the need for regular network connections and reducing power consumption.

Benefits of technology

Ensures timely and efficient digital signature verification using the latest public key certificates without increasing standby power consumption, thereby enhancing the reliability of emergency message reception.

✦ Generated by Eureka AI based on patent content.

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Abstract

The disclosure relates to a public key certificate updating method, terminal device, and storage medium. The method includes: confirming a status of a public key certificate in the terminal device in response to the terminal device successfully establishing a data service or the terminal device receiving digital signature information; and downloading and saving a latest public key certificate from a network side based on the status of the public key certificate. By using the method, there is no need to set a timer to regularly connect to the network to download an updated public key certificate, and there is also no need to constantly establish a network connection to receive a public key certificate updating notification, which allows the terminal device to perform digital signature verification on digital signature information using the latest public key certificate at all time without increasing the standby power consumption of the terminal device.
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