Mechanics: Encryption
Explore how encryption helps secure the communication between clients and servers by establishing shared secrets to prevent eavesdropping. Understand basic encryption concepts, including variations like the Caesar cipher and protocols such as Diffie-Hellman key exchange, to protect online interactions against interception and maintain data confidentiality over HTTP.
Why encryption?
We’re halfway to securing the communication between you and your partner. Now that we’ve solved authentication (verifying the identity of the caller) we need to make sure we can communicate safely without others eavesdropping in the process. As I mentioned, you’re right in the middle of a meeting and need to spell your online banking password. You need to find a way to encrypt your communication so that only you and your partner will be able to understand your conversation.