In this chapter, we look at the most fundamental building block of web applications: the HTTP protocol. This is the protocol browsers and web servers use to communicate with each other.
Most web applications use the encrypted version of HTTP, called HTTPS. So that we can understand this, as well as some topics in future chapters, we look in some detail at encryption methods before learning how they are applied in the HTTPS protocol. Encryption techniques fall into two categories: symmetric and public ...
