some readme-s

README.md

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+# Project - TODO:
+
+[ ] Create a skeleton protocol
+[ ] implement most of the skeleton
+	[ ] Create basic TCP server
+	[ ] Create basic client that connects to the server
+	[ ] Send ping message from client to server
+	[ ] Add more items based on skeleton protocol
+[ ] Refine protocol using the implementation (and update stuff that got changed in impl)
+[ ] Finish implementing the protocol
+[ ] Update the protocol file with the latest structs and stuff

client/README.md

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+# Client
+

lib/README.md

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+# Shared library
+
+Contains shared stuff between the client and the server:
+
+- Data structures
+- helper functions

protocol.md

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+# The Protocol
+
+All encryptions are made using RSA (key size to be determined), no symmetric encryptions
+are used due to messages being short.
+
+## Registration:
+
+- User sends a register request to server `(phone number, RSA public key)`, 
+giving them a public key and encrypting using the server's public key
+- Server sends the user a `Confirm` message & a 6-digit code
+- User sends the server the 6-digit code, signed using the key provided at stage 1
+(this message is very short and funny, because its a 6-digit code, signed using the 
+user's private key, and encrypted using the server's public key)
+- Server sends a last `Confirm` and the registration process is done
+
+## "Login"
+
+The users dont need to login, as they dont really need to hold a conenction
+to the server, only thing that matters is that every message to the server should
+be signed with the user's private key, thus the key acts as a form of credentials
+
+## Passing messages
+
+In order to send a message from A to B, A will ask the server for B's key,
+A will then encrypt the message using B's key, signed with A, wrapped in a `SendMessage`
+request and ultimately signed by A and encrypted using the server's key.
+
+The server will hold on to the message until B will send a `GetMessages` request
+to the server.

server/README.md

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+# Server