Zephyr-Project-Development (1).pptx

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1、Enhancing System Security by Integrating Zephyr Bootloader and MCU Boot Afzal HasanAssociate Staff EngineerSamsung Semiconductor India ResearchPriya Dixit Staff EngineerSamsung Semiconductor India ResearchAgenda Importance of system security in Zephyr bootloader System architecture of Zephyr RTOS In

2、tegration process of Zephyr bootloader and MCU Boot Secure Boot process of proposed bootloader Firmware Upgrade process of proposed bootloader Rollback protection and bootloader recovery Threat models Limitations and Challenges Future DevelopmentIntroductionEnhancing system security in an interconne

3、cted and digital world requires the integration of robust security measuresThe Zephyr bootloader is a lightweight and secure mechanism that enables trusted booting and firmware updates on resource-constrained devices,ensuring software integrity and preventing unauthorized code execution.The MCU boot

4、 complements the Zephyr bootloader by providing an additional layer of security through secure firmware updates and cryptographic authentication,preventing unauthorized or compromised firmware from compromising the system.Enabling control over executed firmware to prevent security breaches,unauthori

5、zed access,and malicious activities.Enhancing system security by establishing a trusted environment,protecting sensitive data,preserving system integrity,and maintaining user trust in the face of evolving threats.Discussion about Zephyr RTOS System Architecture.System ArchitectureImage Reference:Doc

6、umentation Zephyr Project DocumentationMeasures and Practices implemented to protect the integrity,confidentiality,and availability of the software,hardware and data within the embedded system.Key Considerations for System Security in Embedded Systems:Secure BootFirmware Security Communication Secur

7、ityAccess Control and Memory ProtectionSecurity UpdatesPhysical SecuritySupply Chain SecuritySecurity testing and vulnerabilityCompliance and StandardsImportance of System SecurityImage Reference:Lancope Enhances Network Visibility and Security Analytics in StealthWatch System 6.6-Network Virtualiza

8、tion Combination of both bootloaders provides a robust and secure firmware update solution for MCU based devices using the Zephyr RTOS.By leveraging MCU Boots flexibility and security features,developers can ensure reliable and authenticated firmware updates.The integration simplifies the developmen

9、t process by providing a unified framework for managing firmware updates within the Zephyr RTOS environment.Next,we will discuss about Zephyr Bootloader,MCU Boot and their integration process.Concept of Integrating Zephyr Bootloader and MCU BootZephyr Bootloader Features Lightweight Design Secure Bo

10、oting Firmware Update Support Cryptographic Verification Flexible Configuration Error Handling and Recovery Compatibility Integration with Zephyr RTOSZephyr BootloaderMCU Boot Features Secure Boot Process Firmware Update Support Cryptographic Verification Flexible Configuration Error Handling and Re

11、covery Tamper Resistance Compatibility Integration PossibilitiesMCU Boot sequence Integration Process of Zephyr Bootloader and MCU Boot Understand Zephyr RTOS and MCUboot Set up the Development Environment Select the target hardware Integrate MCUboot into Zephyr BootloaderAdd MCUboot as a submodule

12、to Zephyr project Modify Zephyr project CMakeLists.txt to include MCUbootIntegration Process of Zephyr Bootloader and MCU Boot Configure Zephyr RTOS for the target hardware Customise MCUboot configuration Implement Board Support Package(BSP)Test and DebugBootloader FlowchartImage Reference:MCU Bootl

13、oader|NXP SemiconductorsBenefits of Integrating Zephyr Bootloader and MCU Boot Enhanced System Security Secure Booting Firmware Updates Cryptographic Verification Tamper Resistance Protection against Unauthorized Code Execution Mitigation of Firmware-Level Attacks Maintaining User TrustSecure BootSe

14、cure Boot ensures the authenticity and integrity of a system boot sequence using PKIFor secure boot,the digital signature is created using a private key and is verified using the corresponding public key.Using cryptographic keys and digital signatures,we a chain of trust is established for secure bo

15、oting.Secure Boot ensures only trusted hardware with authorized and trusted software components are loaded during the boot process Secure Boot processImage Reference:https:/ secure Image exampleFirmware Upgrade ProcessRollback ProtectionBootloader RecoveryThreat Models and Best PracticesThreats:Unau

16、thorized Code ExecutionInsider ThreatsFirmware-level AttacksSupply Chain AttacksTampering and Reverse EngineeringRollback AttacksPreventive Measures:Understand the RequirementsDesign a Secure Boot ArchitectureImplement Secure Firmware TransferEstablish a Secure Update MechanismPerform Firmware Verif

17、ication and AuthenticationEmploy Robust Error HandlingRegularly Update Bootloader and FirmwareTest and Validate the IntegrationLimitations and Challenges Resource Constraints Compatibility and Portability Key Management and Security Firmware Update Process Testing and Validation Industry Standards and ComplianceFuture DevelopmentsHardware SecurityAdvanced Cryptographic AlgorithmsMachine Learning and Artificial IntelligenceSecure Over-the-Air UpdatesPrivacy and Data ProtectionContinuous Monitoring and ResponseSecurity by DesignThank You