Generalize SHA256 code to allow tinycrypt support

When building with ECDSA P-256 as the signature algorithm, we are still
bringing in SHA256 and some ASN.1 code from mbed TLS.  Fix part of this
by wrapping the hash functions with general routines (inline functions)
allowing to select between mbed TLS and Tinycrypt for the
implementation.

Update the Zephyr config files so that the Tinycrypt version is used
when building the ECDSA P-256 signing variant.
5 files changed
tree: 89698d022a398bbbb0ff55ec01a2e6f5d4f9df51
  1. apps/
  2. boot/
  3. imgtool/
  4. scripts/
  5. sim/
  6. .gitignore
  7. .travis.yml
  8. build_boot.sh
  9. Makefile
  10. project.yml
  11. README-zephyr.rst
  12. README.md
  13. repository.yml
  14. root-ec-p256.pem
  15. root-rsa-2048.pem
  16. sign.sh
README.md

mcuboot

Overview

MCUBoot is a secure bootloader for 32-bit MCUs. The goal of MCUBoot is to define a common infrastructure for the bootloader, system flash layout on microcontroller systems, and to provide a secure bootloader that enables easy software upgrade.

MCUboot is operating system and hardware independent, and relies on hardware porting layers from the operating system it works with. Currently mcuboot works with both the Apache Mynewt, and Zephyr operating systems, but more ports are planned in the future.

Roadmap

The MCUBoot project was originally taken from the Apache Mynewt operating system, which had secure boot and software upgrade functionality instrinsic to it. Currently development is heads down on a first release of MCUboot that works across both the Zephyr operating system and Apache Mynewt operating system.

For more information on what's being planned, and worked on, please visit:

https://runtimeco.atlassian.net/projects/MCUB/summary

Browsing

Information and documentation on the bootloader is stored within the source, and on confluence:

https://runtimeco.atlassian.net/wiki/discover/all-updates

For more information in the source, here are some pointers:

  • boot/bootutil: The core of the bootloader itself.
  • boot/boot_serial: Support for serial upgrade within the bootloader itself.
  • boot/zephyr: Port of the bootloader to Zephyr
  • imgtool: A tool to securely sign firmware images for booting by mcuboot.
  • sim: A bootloader simulator for testing and regression

Joining

Developers welcome! To join in the discussion, please join the developer mailing list:

http://lists.runtime.co/mailman/listinfo/dev-mcuboot_lists.runtime.co