Design a system with a server and a client that can exchange files in either direction such that confidentiality and integrity of those files are preserved. Assume that the public keys of the client and the server are known to each other. Use RSA for this assignment. Here are two preliminary steps that you need to follow to get started: (a) Generate a key pair using RSA in the client. Export the public key into a standard format. Research on how to encode RSA keys into a file. Copy that file physically to the server. (b) Generate a key pair using RSA in the server. Export the public key into a standard format. Copy that file physically to the client. Assume you have access to public key crypto, symmetric key crypto and cryptographic hash functions. Come up with the best design for accomplishing both confidentiality and integrity using a combination of the above tools. Submit a report with the usual information along with a diagram that illustrates the overall idea using the notations we use in this course.