jeds6391 / nzcovidpass Goto Github PK

System.Formats.Cbor is a built-in offering for reading/writing CBOR data.

It is slightly primitive in comparison to the current CBOR implementation used, but it may be nice to remove an external dependency and only depend on libraries from MSFT.

Would be good to support full framework via a .NET standard 2.0 target.

There may be some complications due to usage of later .NET functionality but most should be manageable.

Currently the library is limited to the PublicCovidPass credential type, but it may be worthwhile making this more flexible.

A possible signature for the verifier could be:

// Verifies the provided payload as a pass of type `TCredential`
Task<PassVerifierContext<TCredential>> VerifyAsync<TCredential>(string passPayload);

Most of the components are already designed to be agnostic to the type of pass - the main touch points would be:

• CwtSecurityToken: need a way to expose a generic pass
• PassVerifier: need a way to accept the credential type and pass it through to the relevant components

The validity and expiry dates on the Token object do not match up with the displayed dates on the COVID pass.

I have tried to shift them from UTC to NZT but this also does not work, it seems they are just a date rather than datetime.

Does the MoH give these date values as unix time? If so, can the time also be preserved?

var validFrom = result.Token.ValidFrom;
var validTo = result.Token.ValidTo;

In this image, these are the times in the token, but they are back by one day.