[keycloak-dev] KEYCLOAK-1900 - Pluggable password hashing algorithm

[Kunal K]

Hi all,

I would like to start a discussion on how to implement -
https://issues.jboss.org/browse/KEYCLOAK-1900

I have a django web app and all of my users are in a postgres database with
salted passwords hashed using SHA. I have been reading how I can use
UserFederation to implement by own credential validation, but the drawback
here would be that I'll have to keep maintaining my old database.

For starters, I was thinking of replacing all occurrences of
Pbkdf2PasswordEncoder with an equivalent SHAPasswordEncoder, which is a
very crude approach and I'm not sure if it will even work. After some bit
of reading I saw this ticket - https://issues.jboss.org/browse/KEYCLOAK-1900

I would like to implement a custom hashing SPI and would love to get some
pointers on how to go about it.

Thanks

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