Application of SHA256 algorithm in automobile safety field and brief description of its principle

SHA256 is a cryptographic hash function widely used in automotive safety, mainly for data integrity verification, firmware and software security, certification and authentication, and security upgrades. It ensures the integrity of data during transmission by generating a summary of the data, preventing malware injection and firmware tampering. SHA256 can also be used to generate and verify digital signatures to ensure that the source of vehicle control software is credible. In addition, it is also used to ensure the integrity of update files to prevent malicious updates or tampering.