In Part 1, we explored the “why” behind end-to-end encryption (E2EE). In Part 2, you learned to encrypt with AES—fast and safe. Part 3 brought in asymmetric encryption and digital signatures with RSA, solving the key exchange problem. Today, we combine everything: let’s build a…
Here’s a fun thought experiment: imagine you’re sending a postcard through the mail, but instead of the postal workers just seeing the address, they can read your entire message, make copies, store it in their database, and share it with whoever they want. Sounds terrible,…
