> This prompted South Korea to develop their own cryptographic solutions.

I've had an opportunity to interact directly with Korean security culture in my time working for Samsung.

I am sure there exists more secure examples out there, but I saw some extremely bad practices like trivially-reversible password shuffling used throughout the entire org. Anyone with access to a certain manufacturing database and knowledge of a particular stored procedure could immediately reverse all passwords and typically use them to go sideways into other engineering/facility systems.

They always seemed substantially more interested in the theatrical aspects of security than focusing on any first principles. Lots of time was spent talking about reactionary crap like a fleet of hardware ARP sniffers installed throughout the network. Not a lot of time was spent talking about PBKDFs, system boundaries and determinism.