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Showing posts from April, 2025

Sec OC - Secured on Board Communication

Understanding Authenticated Boot Types in ECU systems

  In Modern automotive system, security during the Booting process of electronic Control using (ECU's) is more critical than ever. One cornerstone of this security is Authenticated Boot , which ensures that only trusted and verified firmware is executed. This protects the system from unauthorized or malicious modification.  Depending on the system architecture and performance needs, Authenticated Boot can be implemented serval ways. Below we explore four key strategies. Sequential Boot, Concurrent Boot, Contingent Boot and Delayed Boot.  Sequential Boot  Depending Sequential Authenticated Boot is method where each's software component in the boot chain is verified one after other, in a strict sequence. The process ensures that only after the  entire chain of trust has been validated does the system hand over control to the main firmware for normal execution.  characteristics: Authentication is performed in strict linear order .  Execution begins only a...