danm | TelCo grade network management in a Kubernetes cluster | Networking library

I'm writing an application in c# .net that needs to communicate with nfc reader (ACR122U or in built windows WUDC). The reader will send/receive data to wristband that behaves like type 4 tag. I'm using pcsc sharp library for this: https://github.com/danm-de/pcsc-sharp. Communication is over NDEF protocol with single text record, which can be used to obtain data from wristband. Text record format is G:{nameOfParameter}. For example G:ID, G:MAC.

I'm struggling for few days with sending write message to the wristband. The command I was able to make work is APDU ReadBinary Command:

Researched this issue many times but didn't found solution of it. Working with xamarin forms version 5.0.0.2012, on win 10 os (saw many solutions for mac or linux but didn't found any for windows), using PCSC library version 5.0.0. Trying to invoke context.Establish method while debugging on Android 8.0:

I'm using C# with a c# library to read out the identification data from tachograph cards.

I only need to read out the unique card ID and can do this with a driver card, I send the correct APDUs to do the trick. I'm now trying to read out the ID of a company card doing the same things, as described in the documentation I could find (ECE/TRANS/SC.1/2006/2 and sub appendixes). This doesn't work.

If I understand the documentation correctly, the problem is that after selecting a DF and an EF after that, the Authentication has to be redone (on a company card only) to read out the unique identification data from the EF. Now, reading the documentation, I can understand I have to use a "manage security environment" to set/request a public key? Then use an "internal authenticate", "get challenge", run an "external authenticate" and finally use a "read binary" to read out the data. But only after setting the logic to the correct EF. Am I correct in this matter?

If I'm correct, does anyone understand where/how I can request the public key from the card? and what algorithm is used to decrypt the challenge using the public key and eventually, what to send back to the card?

If I did not understand it correctly, can anyone explain the steps in authenticating with a tachograph smartcard? Using idiot terms would be appreciated as I'm completely new in this line of work and still trying to learn.

Sorry for the long post. I have some trouble breaking it down into the essential aspects or find the right wording, and thus also googling it -- so please forgive me if this has been asked before. ;) I'll just describe the whole situation I'm facing here and try to be as complete as possible.

I'm currently tracking down a very weird bug where including the headers of some library X before my own classes leads to very strange compile time errors. The details are not that important here (I'll give a minimal example in a second!), but for context: I'm serializing my objects with a library called cereal, and it suddenly tells me that my classes are not default-constructible anymore.

After cutting the included evil-stuff-breaking header into pieces I finally found out what happened, and recreated the bug in a reduced example, but I have no idea why things work (or don't) as they do, and maybe someone can explain this to me. :)

Some part of the included header of X breaks a type trait in cereal which determines if a given class T can be default-constructed by cereal::access.

So, first thing we need is the type trait. This is an implementation that is kind of similar to how the trait in cereal works (but it's not the same, extremely boiled down for the sake of a minimal example):