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In the past I would avoid all situations that would cause me to handle passwords in my code. My code does not handle ISO rules for password protection, and it would be quite some time to develop those features. Then it would be even more time to have meetings certifying my code. Having reviews, and audits to verify the protection it performs and that it works properly every time. Then the verification procedure to have records of its functionality. Instead I would rely on Windows user management, or rather domain controlled management. If that wasn't an option I would use TestStand user management. If the project wasn't using TestStand I would push for DSC which adds user management. The point I'm trying to make is that personally I would not use my own code to perform security other than for a deterant, and not unauthorized access that would compromise any thing important. My opinion is that it is more cost effective, and safer to rely on 3rd party software that is off the shelf, and has already gone through any certifications required. Of course that being said I understand the constraints people are in and why these might not be viable options.

Consider the abort button as a synonym to using a concrete wall to stop your car with. It works but can have undesirable effects!

i'm sorry for your question。i belive your problem must be solve.