VerificaC19 Python SDK

🐍 VerificaC19 SDK implementation for Python.

Requirements

• Python version >= 3.7

Make sure zbar is installed in your system. Source.

• For Mac OS X, it can be installed via brew install zbar
• Debian systems via apt install libzbar0
• Fedora / Red Hat dnf install zbar

Install

pip install verificac19

Usage

Download and cache rules and DSCs

You can download and cache rules and DSCs using service.

from verificac19 import service

service.update_all()

update_all may rise VerificaC19Error

from verificac19.exceptions import VerificaC19Error

⚠️ By default rules and DSCs will be cached in local folder, to change it please set VC19_CACHE_FOLDER env variable.

Verify a DCC

You can verify a DCC using verifier. You can verify a DCC using verify_image for images and verify_raw for raw data.

from verificac19 import verifier

result = verifier.verify_image("my_dcc.png")
result = verifier.verify_raw("HC1:GH.....1GH")

verify_image and verify_raw return a dictionary containing person name, date_of_birth, code and a message alongside the result

{
  'code': verifier.Codes.NOT_VALID, 
  'result': False, 
  'message': 'Certificate is not valid', 
  'person': 'Sčasný Svätozár', 
  'date_of_birth': '1984-09-27'
}

you can compare the resulting code with verifier.Codes values

for example

result = verifier.verify_image("my_dcc.png")
assert result['code'] == verifier.Codes.NOT_VALID

⚠️ verify_image and verify_raw may rise VerificaC19Error in case you cache is not initialized. You need to call service.update_all() at least once!

Verification mode

If you want to change verification mode and verify whether a certificate is a Super Green Pass or not, you need to pass verifier.Mode.SUPER_DGP to verify_image and verify_raw methods.

from verificac19 import verifier

result = verifier.verify_image("my_dcc.png", verifier.Mode.SUPER_DGP)

verifier.Mode exposes 2 possible values

Super Green Pass, which will come into force from 6 December to 15 January 2021, will be a certificate valid only for people who have been vaccinated against or who have recovered from Covid19, and will prevent all the others from entering bars, restaurants, cinemas, gyms, theatres, discos and stadiums.

Development

Install dev dependencies

pip install -r requirements-dev.txt

Make sure zbar is installed in your system. Source.

• For Mac OS X, it can be installed via brew install zbar
• Debian systems via apt install libzbar0
• Fedora / Red Hat dnf install zbar

Run tests

make test

Run examples

python -m examples.<example_name>

Authors

Copyright (c) 2021 - Lotrèk Digital Agency

Contributors

Thank you to everyone involved for improving this project, day by day.

License

This library is available under the MIT license.