WebRTC smuggling arbitrary data through an emoji

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Inspired by Smuggling arbitrary data through an emoji (paulbutler.org) posted here @ https://news.ycombinator.com/item?id=43023508 I wanted to see if I could take it to the next level to create true secret communication. I have created a WebRTC chat directly between two parties, they can send messages back and forth with a secret message hidden in the emoji like Paul did, but to make the message more secure, the message is encrypted with a pin. I see Person A starts a new chat, they send the url to Person B. They both know the pin e.g. 1234 or qwerty or WhatEverYouLike etc. Being WebRTC once the parties are connected no messages are sent to the server. Being hidden in an emoji the chat looks pretty innocent and it is not obvious that the emoji contains a secret message. Being encrypted it is harder to decode. Happy to hear what you think or other improvements.

Visit product View on Hacker NewsFeb 18, 2025

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