I actually authored a freeware program that did this back around '95, for fun and as a project to learn a programming language. I am not sure it is what you are referring to, though. It was a simple DOS utility called 'Black Hole'.
The "compression" was achieved by moving the file to hidden directory and replacing it with a pointer to the hidden location, plus some random data which was a hash of the file so the user got the impression the file was being compressed somehow. This was good because the user couldn't accidentally delete the real file. Of course, it was bad because.. well.. it didn't actually save you any space, and the file was non-portable.
Slashdot Mirror
I actually authored a freeware program that did this back around '95, for fun and as a project to learn a programming language. I am not sure it is what you are referring to, though. It was a simple DOS utility called 'Black Hole'.
.. well .. it didn't actually save you any space, and the file was non-portable.
The "compression" was achieved by moving the file to hidden directory and replacing it with a pointer to the hidden location, plus some random data which was a hash of the file so the user got the impression the file was being compressed somehow. This was good because the user couldn't accidentally delete the real file. Of course, it was bad because
Meh.