A time window based cipher key smooth transition system

By using a time-window-based cryptographic key smooth transition system, the problems of unsmooth and unstable key transitions in existing technologies are solved, achieving smoothness and stability in key transitions and improving the security and reliability of cryptographic machines.

CN119449287BActive Publication Date: 2026-02-06YUHENG POWER STATION OF SHAANXI HUADIAN YUHENG COAL POWER CO LTD
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Patent Information

Application Number
CN202411452161.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-17
Publication Date
2026-02-06
Estimated Expiration
2044-10-17

AI Technical Summary

Technical Problem

In existing cryptographic key transition technologies, fixed-time replacement schemes result in an uneven key transition and are prone to packet loss. Negotiated replacement schemes are not suitable for scenarios with high data interaction latency and high packet loss rates, which affects the stability and reliability of cryptographic machines.

Method used

A time-window-based cryptographic key smooth transition system is adopted. The system collects operational data through a data analysis module, analyzes key transition index values ​​and time window parameters, adjusts the time window parameters for key smooth transition, and updates the key based on the key smooth update results. The key time window is designed to achieve a smooth transition.

Benefits of technology

It improves the smoothness and stability of the key transition process, reduces key transition errors, enhances the security and reliability of the cryptographic machine, reduces repeated adjustments and security risks caused by poor key transition, and improves the security protection capabilities of the cryptographic machine.

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Abstract

The application discloses a time window-based cipher machine key smooth transition system and relates to the technical field of key distribution. First, relevant operation data of a cipher machine is collected, and time window parameters of key smooth transition of the cipher machine are obtained through analysis, so that whether the time window parameters of key smooth transition of the cipher machine need to be adjusted can be evaluated. Through optimization and adjustment of the time window parameters, the situation that the performance of the cipher machine is reduced due to improper key transition can be reduced. Then, the key transition process of the cipher machine is analyzed, the security of the key can be evaluated, and the key that needs to be updated in advance can be found early, so that the key can be updated before the key is possibly leaked. Finally, the key smooth update result of the cipher machine is obtained through analysis, and the key is updated according to the key smooth update result of the cipher machine, so that the security of the cipher machine in the whole key life cycle can be improved, and security vulnerabilities caused by non-compliant key update can be reduced.
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