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RIOT: towards open source, secure DevOps on microcontroller-based IoT

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RIOT: towards open source, secure DevOps on microcontroller-based IoT

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Other-the-Air firmware update on microcontrollers has always been a challenging - but required - topic to secure an IoT application. The RIOT operating system - https://riot-os.org - provides all the building blocks to perform firmware updates, with end-to-end security and standard protocols.

Other-the-Air firmware update on microcontrollers has always been a challenging - but required - topic to secure an IoT application. The RIOT operating system - https://riot-os.org - provides all the building blocks to perform firmware updates, with end-to-end security and standard protocols.

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RIOT: towards open source, secure DevOps on microcontroller-based IoT

  1. 1. RIOT: Towards Secure DevOps on microcontroller-based IoT Alexandre Abadie Emmanuel Baccelli
  2. 2. Agenda  Context  RIOT: a brief overview  Demo: Secure IoT DevOps with RIOT-fp
  3. 3. Internet A multitude of smaller, cheaper microcontroller- based devices IoT: Cyber-Physical Deployments Low-end IoT devices - 1000x less energy than RaspberryPi - kBytes instead of GBytes of memory
  4. 4. IoT: Device & Usecase Polymorphism  Extremely varied use-cases, in almost all verticals  Various vendors & architectures (8-bit, 16-bit, 32-bit)  Various low-power communication technologies (BLE, 802.15.4, LoRa…) iotworm.com
  5. 5. Software on Low-end IoT Devices  IoT software before  rudimentary embedded software, vendor-specific (vendor-locked?)  IoT software now  Cybersecurity, interoperability, device management requirements… increase complexity + drive the need for a real OS Middleware integration and Application RTOS ApplicationOS and Middleware Development time Development time This slide is partly borrowed from Hannes Tschofenig, ARM
  6. 6. IoT Software: Current Trends O. Hahm et al. "Operating Systems for Low-End Devices in the Internet of Things: a Survey," IEEE Internet of Things Journal, 2016. ARM Cortex-M0+
  7. 7. Agenda  Context  RIOT: a brief overview  Demo: Secure IoT DevOps with RIOT-fp
  8. 8. What is RIOT? ✓An operating system for IoT devices too small for Linux ✓A free, open source software platform & ecosystem ✓A world-wide community of developers
  9. 9. Large Open-Source Community  2013: started as French-German research project  2018: more than 200 contributors worldwide  ~ 20,000 commits and ~10,000 Pull Requests  Academics, makers, industry (SME & bigger companies)  Hundreds of related scientific publications  Products shipping with RIOT in US, Europe, Russia  Yearly RIOT Summit conferences (summit.riot-os.org)  next in Helsinki Sept. 5-6 Source:www.openhub.net/p/RIOT-OS Monthly contributors github.com/RIOT-OS/RIOT E. Baccelli et al. ‘RIOT: an Open Source Operating System for Low-end Embedded Devices in the IoT,’ IEEE Internet of Things Journal, 2018.
  10. 10.  Modularity around a micro-kernel – building blocks, to be combined in all thinkable ways; Caters for versatile use cases & memory constraints;  Unified APIs – across all hardware, even for hardware-accessing APIs; Enables code reuse and minimizes code duplication;  Vendor & techno. independence – Vendor libraries: avoided; Design decisions don’t tie RIOT to a particular technology; General-Purpose OS for low-end IoT 120+ boards supported 8-bit, 16-bit, 32bit MCUs Minimal config. 2,6kB RAM 3,2kB Flash (Cortex-M)
  11. 11. Numerous Libraries  Packages: bundling 3rd-party libraries  Integrated on-the-fly at build–time  Easy to add: just requires 2 Makefiles  Patches (if needed) are typically minimal C, C++ (JavaScript, Rust)
  12. 12. Network-level Interoperability Wired & Bus  CAN  Ethernet Low-power wireless LAN & WAN  IEEE 802.15.4  LoRa package  BLE (work-in-progress) IP Protocols Stacks  Default stack (GNRC)  Thread (package)  lwIP (package)  OpenWSN (in progress) Experimental stacks  CCN-lite (package)  NDN-RIOT (package)
  13. 13. Agenda  Context  RIOT: a brief overview  Demo: Secure IoT DevOps with RIOT-fp
  14. 14. RIOT-FP : Aiming for IoT cyber-security RIOT-FP is an Inria project launched May 2019 combining RIOT with:  Next generation IoT crypto primitives: small, fast and future-proof  Secure IoT networking, object security, secure bootstrapping  Formally verified IoT software modules within RIOT  Secure IoT software updates, in practice, on most devices supported by RIOT RIOT-fp on the web: https://future-proof-iot.github.io/
  15. 15. IoT Devices Access point / Border router Low-power radio IDE Continuous Integration System IoT Firmware Update Repo INTERNET 6LoWPAN, CoAP, SUIT IoT Software Maintainer (e.g. OEM) DevOps for microcontroller-based IoT
  16. 16. RIOT Image 2 RIOT Image 1 Bootloader Metadata Metadata Secure IoT Firmware Update: Workflow RUNNING IMAGE
  17. 17. Demo

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