Tell me, is there a quick python code for generating a hex private key in the required range? So that the result is saved in a text file. Well, then maybe there is a script to create a public key from this text file, also with saving. I just found some, but they are very slow, they generate 100 million hex per day, as well as public keys.

I searched and couldn't find anything in C++. The computer is capable of generating at least 100 million keys per second. But all the scripts I found are very slow. You just need the hex to be in a separate file and the public keys to be in a separate file. Thank you very much in advance if anyone decides to help.