“Cryptography is the practice and study of techniques for secure communication in the presence of third parties called adversaries. These adversaries are often referred to as Eve in cryptography, while the sender and recipient of messages are called Alice and Bob respectively. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages.”

After choosing which cryptography library you will use, write small python programs according to the following.

1- Write a Python program to compute and print the message digest of this file using SHA-512.
2- Write a Python program to generate a digital signature of this file using MD5 and RSA. You need to save the public key (encoded) for another program to verify the signature.