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This is a meta post, sorry if that isn't really allowed.
I've been working on a minifilter driver, and of course, been referencing this board often for advice from more seasoned kernel developers, and I've noticed a trend.
A huge amount of people are asking for help on the exact same problem -- how to encrypt a file, and decrypt it only when opened by Notepad (or some other program). Why are so many people asking this? It almost sounds like a homework problem. This is such a narrow use case, seemingly able to be accomplished from usermode.
I've even discovered that OSR offers a commercial product for this, FESF, so presumably this problem is so prevalent that OSR can justify its existence and probably pulls in quite a bit of licensing fees from it.
Any insight for my idle curiosity is appreciated.
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