C++ How to permanently delete a file?

Question

C++ / C#

I'm looking for a way, or rather a code or a library for C ++ so that you can delete a file without the possibility of recovery.
OS: Win, Mac

Thanks!

Answer 1

If for you clogging the entire file with random bytes gives an insufficient guarantee, then store such files on a USB flash drive, and use not C ++, but a hammer and an oven to delete them. SSD at any time of wiping can reassign memory areas so that neither 1 nor 101 times will overwrite information.

Answer 2

I solved this problem by rubbing the file 7 times (you open the file and write there) with random values.
The states even have a document, such as "secret information must be deleted like this." If necessary, I will throw off the code under Win

Answer 3

Isn't it easier to open, fill with random bytes, close and delete with regular means?

Answer 4

agmt , if our file is encrypted, then we can read and write data ... but for example, we will not be able to open a .doc file i.e. we need to first decrypt it, save it and only then open it.
e-nigma has certificates for cryptography, that it complies with GOST and there are no bookmarks in it.

Answer 5

If you really need the code, then look at the Linux shred sources.