encryption on toorun.devhttps://toorun.dev/tags/encryption/Recent content in encryption on toorun.devHugo -- gohugo.ioen-usTue, 06 Oct 2026 10:00:00 +0000Firmware Signing vs Encryption: Secure Updates, Secure Boot, and Read-Only Embedded Systemshttps://toorun.dev/posts/firmware-signing-encryption-secure-boot-embedded-linux-mcu/Tue, 06 Oct 2026 10:00:00 +0000https://toorun.dev/posts/firmware-signing-encryption-secure-boot-embedded-linux-mcu/Firmware Signing vs Encryption: Secure Updates, Secure Boot, and Read-Only Embedded Systems Imagine an industrial controller receiving a firmware update over Ethernet, or a technician inserting a USB stick into an embedded Linux gateway. How does the device know the file came from its manufacturer? Can someone replace it with malicious code? Can a competitor read the software? What happens if power fails halfway through installation? These are different problems. Signing proves authorization and detects modification.