[BUG] EnumerateRpsBeginResponse.GetData fails on some firmware versions when no RelyingParties exists

[virot]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

On: YubiKey 5 NFC / 5.4.3
Security Key C by Yubico / 5.4.3

Causes:
Exception : Yubico.YubiKey.Fido2.Ctap2DataException: The FIDO2 info returned is invalid.
at Yubico.YubiKey.Fido2.Commands.EnumerateRpsBeginResponse.GetData()
at Yubico.YubiKey.Fido2.Fido2Session.EnumerateRelyingParties()

When adding a single RP it starts working as intended

Expected Behavior

Return zero same as 5.7.1 not a exception

Steps To Reproduce

Sample software:
https://github.com/virot/YubiKeyTests/blob/main/fido2_empty_fido/Program.cs

This does not use a KeyCollector, my project powershellYK does, and both are affected the same way and I am to lazy for my test code

Version

1.12.1

Version

5.4.3

Anything else?

No response

[DennisDyallo]

Thanks again @virot
I will look into this