MTProto
MTProto is a proprietary protocol developed by Telegram for secure client-server communication, primarily used in its messaging app. It is designed to provide end-to-end encryption, authentication, and data integrity for messages and media transfers. The protocol operates in two layers: a transport layer for data transmission and an encryption layer for securing payloads.
Developers should learn MTProto when building secure messaging applications, especially those requiring high privacy and resistance to surveillance, as it offers robust encryption and low latency. It is particularly useful for implementing features like secret chats in Telegram or similar platforms, where end-to-end encryption and forward secrecy are critical. Understanding MTProto can also aid in auditing or integrating with Telegram's API for bots or custom clients.