[keycloak-user] Custom password hashing in user federation

Hello, in our custom user database, we have passwords hashed by bcrypt (or argon2). As far as I can see we have 2 ways of verifying these passwords: 1) Create a PasswordHashProvider via SPI, and teach it how to use the hashing algorithms. 2) Include the hashing algorithms as a dependency of our UserProvider, and do it internally via implementing CredentialInputValidator. Which of these options is the recommended way to do this? Cheers, Simon