How to Send Encrypted Files via Telegram

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Telegram is known for its emphasis on privacy and security, making it a popular choice for users who want to communicate safely. While Telegram provides cloud-based encryption for regular chats, it also offers a special feature called Secret Chats, which use end-to-end encryption to ensure that only you and the recipient can read messages and view shared files. If you want to send encrypted files via Telegram, understanding how to use these features properly is essential.

Here’s a step-by-step guide on how to send encrypted telegram data files securely through Telegram.

1. Understand Telegram’s Encryption Models
Before diving into sending encrypted files, it’s important to understand Telegram’s encryption system:

Cloud Chats: Regular chats on Telegram are encrypted client-server/server-client but are stored encrypted on Telegram’s servers. This allows you to access your chats on multiple devices but means Telegram technically has access to your data.

Secret Chats: These are end-to-end encrypted, meaning files and messages are encrypted on your device and decrypted only on the recipient’s device. They cannot be accessed by Telegram or anyone else.

For fully encrypted file transfers, Secret Chats are the way to go.

2. Start a Secret Chat
To send encrypted files, you must first start a Secret Chat with your recipient:

Open Telegram and navigate to the contact you want to chat with.

Tap their profile picture or name to open their contact info.

Select Start Secret Chat.

Telegram will create a new chat window that uses end-to-end encryption.

Note: Secret Chats only work between two people (no groups), and messages or files sent in Secret Chats are not stored on Telegram’s servers.

3. Send Files in the Secret Chat
Once your Secret Chat is open, you can send files with encryption by following these steps:

Tap the attachment icon (paperclip) in the chat.

Choose the file type you want to send—document, photo, video, or other files.

Select the file from your device.

Confirm the upload. The file will be sent encrypted, ensuring only you and the recipient can access it.

Because Secret Chats don’t sync across devices, you’ll only see these encrypted files on the devices involved in that particular Secret Chat.

4. Additional Security Options
Telegram’s Secret Chats come with a few more features to enhance file security:

Self-Destruct Timer: You can set messages and files to self-destruct after a certain time once viewed. To enable, tap the timer icon and select your preferred duration.

Screenshot Alerts: Telegram notifies you if the recipient takes a screenshot in a Secret Chat (though this works only on some platforms).

5. Alternative: Encrypt Files Before Sending
If you want to send files in a regular chat but still want end-to-end encryption, consider encrypting files manually before sending:

Use encryption tools like 7-Zip, VeraCrypt, or AxCrypt to encrypt your files with a password.

Upload and send the encrypted file via Telegram.

Share the decryption key or password with the recipient through a secure channel.

This approach adds a layer of encryption regardless of Telegram’s chat type but requires both parties to handle encryption manually.

Final Thoughts
Sending encrypted files via Telegram is straightforward when using Secret Chats, which provide true end-to-end encryption. For maximum privacy, always initiate a Secret Chat for sensitive file sharing. If you prefer the convenience of regular chats, consider encrypting your files before sending. Either way, understanding Telegram’s encryption options empowers you to keep your shared data safe and private.