一种基于外部安全芯片的文件签名方法及系统
By using a file signing method based on an external security chip, a random key pair is generated and signed by a public ECU, and the target ECU verifies the signature, forming a closed-loop security process. This solves the problems of insufficient security and high development cost of existing automotive file signing schemes, and achieves end-to-end security and trustworthiness for vehicle software flashing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HEFEI JUYI POWER SYST CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing vehicle document signing schemes have insufficient security, especially during data transmission where they are vulnerable to attacks. Furthermore, existing technologies are costly to develop and difficult to maintain, and cannot effectively guarantee information integrity and identity verification.
A file signing method based on an external security chip is adopted. A random key pair is generated through a public ECU, and the private key is used to sign and combine the packets. The target ECU verifies the signature, forming a closed-loop security process. Hardware-level isolation and dynamic generation mechanisms are used to ensure the security of the private key and prevent key leakage.
It achieves secure and reliable end-to-end vehicle software flashing, eliminates the risk of key leakage, ensures the integrity and authenticity of information transmission, reduces development costs, and improves system security.
Smart Images
Figure CN120614122B_ABST
Abstract
Citation Information
Patent Citations
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