scripts: imgtool: Add command to dump private keys

This applies a few improvements to a commit previously included in
PR #596:

* Move functions to dump a private key to the private key classes
* Remove language option; always dumps in C format
* Add option to generate a minimal dump. This will remove extra
  parameters that are present in keys generated with the `keygen`
  command.
  For P256 this will remove the public point, which is already
  ignored by the parsing function. The resulting key dump shrinks
  from 138 to 70 bytes.
  For RSA it will remove the DP/DQ/QP parameters which are only
  used with CRT enabled, and if not available, can be calculated at
  runtime. This reduces the size of a key dump from around 1190
  bytes to somewhere close to 800 bytes. A patch to the RSA parsing
  routine will be added in another commit.

Signed-off-by: Fabio Utzig <utzig@apache.org>
Signed-off-by: Ioannis Konstantelias <ikonstadel@gmail.com>
5 files changed
tree: a53f930ea06b85674fcc4d0191cdd26d81a9d854
  1. boot/
  2. ci/
  3. docs/
  4. ext/
  5. ptest/
  6. samples/
  7. scripts/
  8. sim/
  9. testplan/
  10. zephyr/
  11. .gitignore
  12. .gitmodules
  13. .travis.yml
  14. enc-aes128kw.b64
  15. enc-ec256-priv.pem
  16. enc-ec256-pub.pem
  17. enc-rsa2048-priv.pem
  18. enc-rsa2048-pub.pem
  19. LICENSE
  20. NOTICE
  21. project.yml
  22. README.md
  23. repository.yml
  24. root-ec-p256-pkcs8.pem
  25. root-ec-p256.pem
  26. root-ed25519.pem
  27. root-rsa-2048.pem
  28. root-rsa-3072.pem
  29. version.yml
README.md

mcuboot

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This is mcuboot version 1.4.0

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 simple software upgrades.

MCUboot is operating system and hardware independent and relies on hardware porting layers from the operating. Currently, mcuboot works with both the Apache Mynewt and Zephyr operating systems, but more ports are planned in the future. RIOT is currently supported as a boot target with a complete port planned.

Using MCUboot

Instructions for different operating systems can be found here:

Roadmap

The issues being planned and worked on are tracked using GitHub issues. To participate please visit:

MCUBoot GitHub Issues

Issues were previously tracked on MCUboot JIRA , but it is now deprecated.

Browsing

Information and documentation on the bootloader are stored within the source.

It was previously also documented on confluence: MCUBoot Confluence however, it is now deprecated and not currently maintained

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
  • boot/mynewt: Mynewt bootloader app
  • imgtool: A tool to securely sign firmware images for booting by mcuboot.
  • sim: A bootloader simulator for testing and regression

Joining

Developers welcome!