Key Data Aspects of TDLib

[roseline371274]

Comprehensive Chat History: TDLib allows applications to access the entire chat history, including all messages, media, and associated metadata for both Cloud Chats and Secret Chats (if the application is built to handle Secret Chats).
User and Contact Data: Full access to contact lists, user profiles (including phone numbers if authorized), and presence information (online/offline status).
Media Management: Applications built with TDLib can download and upload any media file associated with a user's account, including photos, videos, audio, and documents, with full control over file paths and local storage.
Local Database: TDLib includes a built-in local database that securely stores all downloaded data (messages, media, contacts, etc.) locally on the device. This allows for offline access and efficient data retrieval. The local database is telegram data encrypted, protecting user data even if the device is compromised.
Synchronization: TDLib handles real-time synchronization of data with Telegram's servers, ensuring that the local client always has the most up-to-date information.
Account Management: Applications can manage account settings, including profile information, privacy settings, active sessions, and even account deletion.
Secret Chat Handling: Unlike the Bot API, TDLib provides the primitives necessary to implement and manage Secret Chats, including key exchange and end-to-end encryption. This means custom clients can fully support the most private form of communication on Telegram.
Privacy and Data Handling with TDLib:

Using TDLib comes with significant responsibilities for developers. Since a TDLib-based application acts as a full Telegram client, it has access to all the data a user sees in their official app.

Developer Responsibility: Developers building with TDLib are solely responsible for how they handle and protect user data. They must implement robust security measures, adhere to Telegram's Terms of Service, and comply with relevant data protection regulations (like GDPR, CCPA).
User Authentication: TDLib applications require full user authentication (phone number and verification code), just like official Telegram clients.