Validation tools
This repository contains scripts that help you validate QR codes.
It’s hacky, and a warning for Apple Silicon users: the dependencies I use are a mess on your platform. I’ve given up trying to get it working.
Initializing
First make sure that you have Python 3.9+ installed and working.
Secondly, install all the dependencies:
pip3 install -r requirements.txt
Thirdly, update trustlist.json using the response from the gateway.
No access to the gateway? Then you can use the German trust list:
https://de.dscg.ubirch.com/trustList/DSC/
Just remove the first line (it’s a signature of the document).
validate_quality_assurance.py
This tool validates the encoding, schema and signature of all the Quality Assurance QR codes.
The QA repository can be found here:
https://github.com/eu-digital-green-certificates/dcc-quality-assurance
It has the following arguments, both of which are optional and have sensible defaults:
--repo 'path/to/dcc-quality-assurance'
--countries 'NL,DE,SE'
validate_hcert.py
This tool validates the encoding, schema and signature of all the hcert string.
It reads the hcerts from std-in, one line per hcert, and validates in serial.
Example (unix-likes)
cat examples/hcert-examples.txt | python3 validate_hcert.py
Example (windows)
type examples\hcert-examples.txt | python validate_hcert.py
qr_to_hcert.py
This little tool converts a QR into a hcert string and dumps that to std-out.
Now you can do this to validate a QR code:
python qr_to_hcert.py examples/VAC.png | python validate_hcert.py
hcert_to_qr.py
Takes QRs from std:in; for each line, generates a QR. Dumps all QRs to std:out as base64.
The last QR created is saved as “my.png” in the current folder
cat examples/hcert.txt | python hcert_to_qr.py
print_payload_hcert.py
Takes QRs from std:in; for each line, unpacks hcert and dumps all of the output to std:out.
cat examples/hcert.txt | python print_payload_hcert.py
print_payload_hcert.py
Takes a QR, parses it, unpacks hcert and dumps all of the output to std:out.
python print_payload_qr.py --file my.png
