基于随机数的时间同步安全增强方法与装置
By using random numbers distributed with symmetric keys to hide the information transmission time of the time synchronization system, information exchange and encryption authentication are only performed within the time window determined by the random numbers. This solves the problem of time synchronization failure caused by DOS attacks and improves the system's security and resistance to attacks.
CN117375992BActive Publication Date: 2026-07-17NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
- Filing Date
- 2023-11-10
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
When faced with a DoS attack, existing time synchronization systems suffer from the depletion of cryptographically protected hardware resources, leading to time synchronization failure and the inability to obtain valid information and data.
Method used
The information transmission time is hidden by using a random number distributed with a symmetric key. The sender and receiver only exchange information within the time window determined by the random number, and perform encryption and authentication operations within this window.
Benefits of technology
It significantly reduces the computational burden on attackers, improves the security of time synchronization systems, enhances resistance to DoS attacks, and ensures the confidentiality and integrity of information exchange.
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Figure CN117375992B_ABST
Abstract
本发明公开了一种基于随机数的时间同步安全增强方法与装置，该方法包括：通过采用对称密钥分发的随机数对发送端和接收端之间的交互信息数据的传输时间进行隐藏；发送端仅在该随机数确定的时间发送窗口内的信息数据，接收端仅接收该随机数确定的时间接收窗口内的信息数据；接收端仅对该时间接收窗口内的信息数据进行解密和认证。本发明通过对时间同步交互信息加入随机数对时间交互信息数据的发送时间和接收时间进行随机处理，使得攻击者很难针对性地进行DOS攻击，可显著增强时间同步系统的安全性。
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