Securing method for an electronic clock, associated device, vehicle and systems
The method secures electronic clocks in vehicles by using secure time reception and synchronization time comparisons to prevent unauthorized access, ensuring precise and stable timekeeping despite potential synchronization time unavailability.
WO2026125247A1 Publication Date: 2026-06-18AMPERE SAS
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- AMPERE SAS
- Filing Date
- 2025-12-08
- Publication Date
- 2026-06-18
AI Technical Summary
⚠Technical Problem
Electronic clocks in microprocessors of vehicles are susceptible to instability and can be manipulated by falsified time signals, leading to unauthorized access to sensitive functions.
⚗Method used
A method involving secure time reception from a first entity, determining a confidence time, receiving a synchronization time from a second entity, comparing the difference between these times with thresholds, and controlling clock synchronization based on these comparisons to ensure precise and secure timekeeping.
🎯Benefits of technology
Ensures secure and precise synchronization of electronic clocks, even when synchronization times are unavailable, by using secure time reception less frequently, maintaining clock accuracy and preventing unauthorized access to sensitive functions.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a securing method for an electronic clock (310), comprising the following securing steps: - a) securely receiving a secure time (time700) from a first entity (700) via a first communication, - b) determining a trusted time, the trusted time being the secure time or being obtained from the secure time (time700), - c) receiving a synchronization time (time700') from a second entity (700'), different from the first entity (700), via a second communication, - d) comparing a difference between the synchronization time (time700') and the trusted time with a first threshold, - e) controlling the synchronization of the electronic clock (310) on the basis of the synchronization time which is is conditional on the first threshold being greater than the difference between the synchronization time (time700') and the trusted time.
Need to check novelty before this filing date? Find Prior Art