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Implementation of electronic signatures

hello friends thank you for all the comments you've given on my previous videos I'm glad deal you've liked them I got a few requests to programmatically generate digital signatures or email and I think Python is the best way to do it so with Python we can write a small code and do a lot of things so here I have a presentation on generating district signatures using Python what I have here is so to generate digital signatures if you want to know what digital signatures are and what's the format and all you can watch my previous videos in the same channel so the first thing we do is we will generate the keys used for signing and we're fine so there's a command here which I have collected let me run it right away this OpenSSL command to generate a public/private key pair and here it generates a private key in private key dot out file and publish keys generally in pub key dot out file so this actually generated the out the the public key generated as an X file insert if you see the private key it is a so both are in PEM format a public key has the actual public key public key tort out has actual public key and X file answered so in this application whatever Python application I have I will be needing only the public key part so I'm going to delete this the X financier part so the crypto mod which I'm using it for some reason doesn't support the ex financier part so I'm just using the public key here so what I have here is my public key and private key and the way I've generated is using this command okay so once have generated both the keys this file contains the data which I want to sign at my data dot txt let me remove the signature yeah all right so here I have my private key to sign the data public key to verify the data and this my actual data my data or text and this is a Python program which does that so let's see what it does so these are some initial checks which is fine to read the arguments you give minus s to sign minus V to verify and the private key you want to use the data file and the signature file so this script generates a detached signature and it verifies a detached signature okay so there are some basic argument checking and a couple of functions want to generate and verify so rest all is miscellaneous called so basically these are the this is the crux of my Python script generate signature it takes three arguments and the key key is the contents of my private key our public key whatever is open up right here data is the contents of the file which I'm going to sign or verify and signature file is a...