Telegram Language

The high security of the Telegram messenger is its calling card. To ensure the anonymity of people, the author’s encryption technology is used, which has already become recognized in the professional environment of developers and programmers.

However, the Telegram programming language is much less spoken, and this is undeserved. Let’s figure out what language Telegram is written in and what makes it so safe.

Telegram Specifications

Pavel Durov claims that the real creativity for the developer begins when he uses different programming methods in his work to achieve his goal.

This principle is fully implemented when creating Telegram, therefore, during the technical analysis of the messenger, you can immediately notice that the bet was placed on the code, and not on the appearance.

Programming language

Officially, it is believed that Telegram is written in C ++. This is logical, because it is compatible with simple C, which is used to write mobile applications based on Android and iOS.

However, a number of programmers speculate that a mix of Java, C ++ and Java frameworks was created to create the messenger. How true this belief is is unknown, because the development team did not comment on this issue.

Important! Based on C ++ code, the messenger has existed since 2013. With regular updates to the application, it is only slightly finalized, and not created from scratch. The code was completely rewritten only once to create the official Telegram X web client in the Swift programming language.


The messenger interface looks simple and concise. The main screen displays the latest dialogs with other users, news from Telegram channels, notifications from bots, etc.

Quick settings are available in the left side menu, editing of advanced functions is also included there. You can choose one of four themes, enable automatic night mode, which will be activated by default at nightfall, or put any picture as a background image.

In the computer version of Telegram, the interface looks different with the difference that on the left side of the screen, by default, active contacts or recent correspondence with other users are displayed. If desired, the emoji window can be shifted to the right side of the display so that emoticons are at hand.

Encryption technology

To send messages, the MTProto encryption protocol is used. For authorization and authentication – RSA-2048, DH-2048 algorithms. When one person communicates with another, messages are encrypted using symmetric AES (Advanced Encryption Standard) and a randomly generated key that only the server and the recipient have.

The key is permanently deleted approximately 10 minutes after receiving the message and is not stored on the server. With the transition to the MTProto 2.0 protocol, the SHA-256 cryptographic hash algorithm is used.

Secret chat mode uses a more reliable type of end-to-end encryption, in which the key for reading messages is not sent to the server at all and is available only to the sender and recipient. To implement this function, the AES-256 algorithm in IGE mode is used.

Attention! When you delete a message in correspondence, it is also permanently deleted from the server.

Telegram Source Code

Telegram open source is an open client API code that is available for free download. Despite the fact that the server part of the code remains closed, all functions of the messenger remain working.


Thanks to the open application programming interface, any interested person can access the TDLib data library and create its own web client on its basis. At the same time, you don’t have to adapt to what programming language Telegram is written in, because several versions with Javascript, C ++ and C # support are offered at once.

Messaging, encryption and a local database will work identically to the original Telegram. The ability to edit the code was given in order to popularize company policy and develop freedom of speech, protection of human rights and anonymity of communication. It also provides an incentive for the development of new technologies in the field of communications and mass media.

How to use

Previously, to create a Telegram client, the source code must be downloaded from the official website or in another source. You also need to read the attached instructions on data encryption. Then you can get to work (naturally, without special knowledge and programming skills, nothing will be done).

Reference! It is impossible to download the code for the latest application update, because it is never published. Only old versions of official clients for all platforms are available for download.

Custom web clients can be written using any programming language and framework, so you are not limited in your choice.

Official and unofficial customers

Among official clients, the following are available:

  • Mobile version:
    • Telegram for Android;
    • Telegram for ios;
    • Telegram for Windows Phone.
  • Desktop version:
    • Telegram for Windows / Linux;
    • Telegram for macOS.
  • Web version:
    • Telegram Web-version;
    • Telegram Chrome app.

The only official web client of the development team under the auspices of Pavel Durov is Telegram X.

There are many more unofficial custom clients, for example:

  • Plus Messenger
  • Vidogram;
  • Loopy for Telegram;
  • TechGram;
  • Mobogram
  • Unigram.

They can be used for private purposes: for example, to bypass the blocking of the official Telegram, administer channels, support video calls, advanced design functions.

Thus, Telegram has a powerful engine based on several programming languages ​​and complex encryption protocols. Everyone can use these developments for free to improve the product and offer their innovations.