Hello, I have several questions regarding PBKDF2 as password storage scheme, maybe someone can help?
1) Is it correct, that in the latest version the number of iterations for new hashes is not configurable, but determined dynamically based on calculations? 2) If yes: I think for compliance reasons it would be a good idea to add a configurable "minimum iterations" variable. This might slow down authentication but could help to enforce a minimum security level if required. Any comments? 3) Am I right, that if the current calculation results in higher "iterations number" than used before (e.g., at the time of a last password-change of a user), the hash remains unchanged until new passwort-change? The "Password Upgrade on Bind" (https://www.port389.org/docs/389ds/design/pwupgrade-on-bind.html) does not apply for "more iterations"? 4) If yes: This could be a valuable improvement as the general idea of PBKDF2 is to increase iteration count over time while hardware resources are growing. Any comments? Kind regards, Tobias Ernstberger
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