Well, this is pretty sick! I got the whole thing working.
I am now using my VivoKey Spark to cryptographically authenticate to all Google services. Any website that has a sign in with Google button is now accessible through my VivoKey.
I’m stoked to use this more! To my knowledge, nobody has done this before with their Spark (or at least, documented it and posted it) and it majorly opens the door to use my implant for it’s intended purpose!
I will be writing up a detailed how-to guide soon, as well as testing other services than Keycloak (Jumpcloud/Okta/Auth0 developer tiers) This will all be posted in the VivoKey Forum, probably not the Dangerous Things forum we are on now. If you have a VivoKey Spark, you should definitely set up your profile and check out the forum! - https://members.vivokey.com/ (you can use your Vivokey to sign in/register for the forum 
)