Android: no passkeys available

[maciejhomziuk-dev]

First of all: thank you for this great solution. I implemented it in our application, however I stumble upon following issue on Android:

When the user creates and then checks the registration in the same session, everything works as it should.

When the user creates registration, closes the session, then starts a new one and then tries to check the registration, there comes follwing message: "no passkeys available":

Doing the same in Windows (+ Firefox) works perfectly fine.

Can you tell me what am I missing?

thank you

[maciejhomziuk-dev]

When saving pass key's data in database (for future use) you need to make sure that the data is exact the same as in the session when it is first time created. My problem was the credentialId field which was of type binary(32). It was fine for windows but too short for android. The best way to solve that problem is using varbinary instead of binary field type.