Importing users from Fusion Auth to KeyCloak

benjamin

I tried using the Ruby to import users into a tenant from KeyCloak, the script threw no errors but I am unable to login using the password. The password works in KeyCloak but not in FusionAuth. The Fusion Auth version I am using is 1.45.3 and Key Cloak version is 21.1.1.

Anybody had this issue before?

dan

Hi @benjamin

I've tested with FusionAuth and Keycloak.

One thing to make sure of is that you are using the correct password hashing algorithm on import.

I think that this is the default hashing algorithm for Keycloak: https://fusionauth.io/docs/v1/tech/reference/password-hashes#salted-pbkdf2-hmac-sha-512

Can you share an example of your import script which shows the password hashing algorithm?

benjamin

@dan Hello Dan, I found the fix, at least for my test instance, seems that pbkdf2-sha256 maps to salted-pbkdf2-hmac-sha256 rather than salted-pbkdf2-hmac-sha256-512.

This seems to make the Ruby script work and also it works on our own internal update scripts in the test instance.

dan

@benjamin Awesome!

benjamin

@dan You folks may want to update the documentation and potentially the ruby script you guys provide so people won't panic like we did lolz.

dan

@benjamin Hmmm.

I'm not quite sure what the issue is, because we do specify salted-pbkdf2-hmac-sha256-512 in the import script:

https://github.com/FusionAuth/fusionauth-import-scripts/blob/master/keycloak/import.rb#L151

The migration guide says:

"The encryptionScheme for this plugin is salted-pbkdf2-hmac-sha256-512."

So when you write:

Hello Dan, I found the fix, at least for my test instance, seems that pbkdf2-sha256 maps to salted-pbkdf2-hmac-sha256 rather than salted-pbkdf2-hmac-sha256-512.

Do you mean that pbkdf2-sha256 is the value from Keycloak and it only worked when you used salted-pbkdf2-hmac-sha256 in FusionAuth, or something else?

What version of Keycloak are you migrating from?