# Class type Netmech_scram_gssapi.server_key_verifier

    class type server_key_verifier = object .. end

A `server_key_verifier` verifies on the server side that the users exist and have the right authentication credentials

    method scram_credentials : string -> string * string * int

Returns the triple

     (salted_password, salt, iteration_count)

for a user, or raises `Not_found`. See `Netmech_scram.create_server_session` for the meaning of this triple.