Why do you have two different versions

[orefalo]

Hi, thank yo for this pkg.

Why do you have two different versions

[confiks]

For the Dutch variant of the green pass using unlinkable signatures [1][2], we need all the space we can get, so we use a base45 encoding that uses the exact same method as base58 [3], and which has the exact same efficiency as QR binary mode.

The EU variant isn't of the same efficiency as QR binary mode, as it converts 3 bytes into 2 base45 characters. So it's more like 'base41 using the base45' charset.

[1] https://github.com/minvws/nl-covid19-coronacheck-app-coordination/blob/main/architecture/Privacy%20Preserving%20Green%20Card.md

[2] https://github.com/minvws/nl-covid19-coronacheck-idemix

[2] https://gist.github.com/confiks/8fcb480d87a50cf1bb5e40e2f0930fad

[orefalo]

Thank you so much. Neat implementation