The Telegram has two types of chat features. One is a normal chat and the other is secret chat. Messages in normal chat use End-Server/Server-End whereas a secret uses End-to-End Encryption. Here, the term "End" denotes the client or user. When a secret is created in Telegram, both devices will exchange the same set of encryption keys and an image.

What Is Telegram and How to Use It | Tom's Guide Mar 24, 2019 What is Telegram Messenger and why should I use it Apr 26, 2019 Is Telegram Secure? - Tech Junkie Jan 31, 2020

Telegram Secret Chat. If you are not practical with the concept of Telegram’s Secret Chat: “Secret chats are meant for people who want more secrecy than the average fella. All messages in secret chats use end-to-end encryption. This means only you and the recipient can read those messages.

Telegram Messaging App Review - How Safe Is It for 2020 Dec 20, 2019

Secret chats are meant for people who want even more than that. They use end-to-end encryption, so there is no way to decipher your data without accessing your device. It means you don‘t even need to trust Telegram when you use Secret Chats — their secrecy is guaranteed client-side and anyone can check the source code of Telegram clients.

This response was published on What is Telegram Secret Chat - Underspy Blog The piece was posed by Leila on September 20, 2017. The response is part of a longer post, "What is Telegram Secret Chat” and is the 5th paragraph. "How to cancel Telegram The main "selling" point of Telegram messenger is its ability to send encrypted messages between devices. Unfortunately, the authors are more focused on implementing stickers and other useless features than implementing this amazing feature into the client for desktop computers.