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EU Digital Covid Certificate Encoding?

19-07-2021 11:13AM

#1

RangeR

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Hi,
So I recently received EU Digital Covid Certificate. When I scan it using a standard QR scanning app, it just shows lots of random text. It doesn't looks like Base64, it doesn't look like it was signed/encrypted with a public/private key. Just wondering is there any information out there that defines this encoding algorithm? Is it just an encoding or is it encrypted? Just curious what they use, is it secure of just some form of basic encoding record sets etc.
And is it done on an EU wide level or is it unique to Ireland?

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#2 19-07-2021 11:17AM

Creamy Goodness

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It uses https://github.com/ehn-dcc-development/hcert-spec (base45 it looks like)
and the reference apps for EU certs are here https://github.com/eu-digital-green-certificates

3
#3 19-07-2021 11:20AM

Gregor Samsa

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Spec of the QR code: https://ec.europa.eu/health/sites/default/files/ehealth/docs/digital-green-certificates_v3_en.pdf
Base45, and details about the keys used to sign.

1
#4 19-07-2021 11:29AM

RangeR

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Cheers guys. I'll have a read over.

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#5 10-11-2021 06:48PM

atheist

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https://youtu.be/H9MXyGWoqNg
Tetris :-)

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#6 20-02-2022 12:25PM

zg3409

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The Irish covid app is open source and it has been used as the basis for many other countries. The Irish app can read the code and display it etc.

https://www.hse.ie/eng/services/news/media/pressrel/covid-tracker-ireland-app-one-of-linux-foundation-public-health-s-first-open-source-projects.html

Country specific apps may collect more or less data and allow you to check in etc.

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