How to properly hash a large file?

Question

go

I wanted to know how to correctly hash a file whose size exceeds the amount of RAM on the computer?

Answer 1

I didn't understand what "hash" means. If you get a hash sum, then all algorithms for calculating hash sums allow you to feed the file in small blocks. And the technique depends on the library of files and hash sums that you are currently using.

Answer 2

In Go, all packages for working with hashes (for example, crypto/sha256) can accept data in pieces.
An object with the io.Writer interface is simply created, and you can use io.Copy to redirect the data stream there, for example.