3 ms·
Have you ever looked at the size of the standardize EU QR code[0] ? At just a glance it looks at least 2-3x denser than the one presented in the article. Also,
by nowahe 5y ago
Have you ever looked at the size of the standardize EU QR code[0] ? At just a glance it looks at least 2-3x denser than the one presented in the article.
Also, on the specification published by the EU[1], they seem to advise for a 25-60cm size, and also warn about using <300dpi printers.
When I was vaccinated, I was given an A4 sheet with those QR codes on it, and I really wouldn't want to scan those with a crappy camera.
[0]: https://gir.st/blog/greenpass.html https://gir.st/blog/greenpass.html
[1]: https://ec.europa.eu/health/sites/default/files/ehealth/docs/digital-green-certificates_v1_en.pdf https://ec.europa.eu/health/sites/default/files/ehealth/docs... § 4.2.2
- Beldin 5y agoFrom there [1]: Primary Algorithm: The primary algorithm is Elliptic Curve Digital Signature Algorithm (ECDSA) as defined in (ISO/IEC 14888–3:2006) section 2.3, using the P–256 parameters as defined in appendix D (D.1.2.3) of (FIPS PUB 186–4) in combination the SHA–256 hash algorithm as defined in (ISO/IEC 10118–3:2004) function 4. This corresponds to the COSE algorithm parameter ES256. Secondary Algorithm: The secondary algorithm is RSASSA-PSS as defined in (RFC 8230) with a modulus of 2048 bits in combination with the SHA–256 hash algorithm as defined in (ISO/IEC 10118–3:2004) function 4. So not exactly 512 bit RSA.