Write some software

I need you to develop some software for me. I would like this software to be developed for Windows using Python. Task: Given a text file, write a software program that allows to: - Encrypt the text file using symmetric key algorithm (e.g. AES) - Decrypt a text file using symmetric key algorithm (e.g. AES) - Generate an asymmetric key pair (public and private) - Encrypt the text file using the public key (e.g. RSA) - Decrypt the text file using the private key (e.g. RSA) - Generate the hash digest of the text file (e.g. MD5) - Share a symmetric key between a client and server using Diffie-Hellman protocol.