The encryption is based on 2048-bit RSA encryption, 256-bit symmetric AES encryption, and Diffie–Hellman secure key exchange. Telegram is one of the feature-packed messaging services out there, armed with some neat perks that can put rivals like WhatsApp and Signal to shame when it comes to functionality. While basic Telegram features like the ability to edit messages after sending them are well known, here are some lesser-known, yet incredibly useful things the app can do that could come in quite handy. Animated Emojis
Admins can reach out to users who want to join and have a chat to cover the rules, make sure they're a good fit or even plan a welcome party. When an admin reaches out, Telegram lets the user know they're reaching out as a group admin. The option to automatically save media to Gallery is back with renewed vigor: saving media can now be enabled and disabled separately for chats with users, groups or channels. Just press and hold on the message you want to change and then tap the “edit” button. From there, you can modify the message and resend it. Telegram will put an “edited” label on the message to let recipients know of the update. Hide Your Profile Photo
Turn on Secret Chat Add Animated Stickers to Images/Videos If you're verified on at least two social networks, you can verify your group, channel or bot. Telegram Attachment Options
Telegram offers two types of APIs for developers. Both are free of charge. Even better, thanks to Cloud Themes, you can share your custom themes (or try themes created by others) using a link. If the owner updates the theme, everyone using it through that link will see the changes. Long-press on a theme and choose Share to make it available to others.
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