Import Users from FireBase Auth

[Torbet]

I'm working on moving our site away from FireBase to a Lucia + Prisma combo - But of course we don't want to lose all of our FireBase Auth accounts.

I can export users into JSON/CSV format, which includes their password hash + salt. Is there anyway I can import these users into my database for use with Lucia?

[pilcrowonpaper]

Might take a while but it's definitely possible to copy the users into your database. You just need to know the hashing algorithm. I can help you implement the correct hashing algorithm, but I don't really know how to get the required hashing params/credentials.

I might add a migration guide, but that's way into the future.

https://firebaseopensource.com/projects/firebase/scrypt/

[Torbet]

Thanks for the response! I've exported users into a json with their password hashes and salts.

Is changing the hash algorithm in the Lucia config to scrypt the only way to be able to add users to the DB and have them work?

[Torbet]

@pilcrowonpaper I see Lucia already uses scrypt by default! Where/how should I store the salt, and how can I include it in the hashing process?