The encryption is based on 2048-bit RSA encryption, 256-bit symmetric AES encryption, and Diffie–Hellman secure key exchange. The platform supports two types of channels: public and private. The former can be found in search, and anyone can join them, whereas the latter can be joined only via invitation links. Premium Telegram Premium
To lock a chat go to Settings->Privacy and Security->Passcode Lock and enable it. Once you create a passcode and enable it, you will be able to lock and unlock your chats by tapping on the lock icon at the top right of the app. You can also customize your chat background image in “Chat Background” in Chat Settings. This security-focused messaging app allows you to register a unique username so that people can message or add you to groups without necessarily knowing your phone number. This way, you can keep your number private. Stories and statuses
Should I use Telegram? Hide Telegram Profile Photo Another great option in groups or channels is being able to pin messages. Tap a message and choose Pin to keep it at the top of the chat, where everyone can easily reference it. Self Destruct Messages on Secret Chats
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