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DNSSEC KSK Management Tools

This repository contains source code for the software used by PTI to manage the DNSSEC Key Signing Key (KSK) for the Root Zone.

More information about Root Zone Management is available at https://www.iana.org/domains/root.

Dependencies

This tool depends on the following software:

For the KSR submission webserver (wksr), the following extras are required:

Additional test dependencies

For testing and independent DNSSEC validation of KSRs, the following modules are used:

Debian Dependencies

apt-get install python3 python3-dev python3-venv swig

Development Setup

To create a virtual environment for testing with poetry, use make depend or use a VS Code devcontainer.

N.B. You will need to ensure that SWIG and SoftHSM are installed, as pykcs11 and tests depends on them.

Code Documentation

  • Code formatted using Ruff and isort. Use make reformat to tidy up source code before committing changes.
  • Code documentation through the use of Doxygen.
  • Documentation include core method's description, arguments and return values in line with the code.
  • The code shall be a PEP 8 compliant and docstring conventions PEP 257.

Design choices

  • The Python XML library (Expat) is not used for reading/writing XML data in order to limit the amount of code.
  • DNS Python is only used for testing as we do not need to parse or output DNS data. The required functions for signing are provided by PKCS#11 and the few functions needed for DNSSEC processing are reimplemented.
  • FastAPI is used as a webserver in wksr. ICANN uses Django for several projects, but since this project only requires a very small subset of Django functionality FastAPI has been considered a better fit.
  • YAML was chosen as the configuration file format for increased readability compared to JSON.

Containers

The make container target will create containers for both the core tools as as well the webserver (wksr).

Running

Example of how to run a tool with the Luna HSM using the kskm container:

docker run --rm -it \
    --mount readonly,type=bind,source=/etc/Chrystoki.conf,target=/etc/Chrystoki.conf \
    --mount readonly,type=bind,source=/usr/safenet/lunaclient,target=/usr/safenet/lunaclient \
    --device=/dev/g70 \
    kskm:latest \
    /usr/safenet/lunaclient/bin/cmu list