WebRTC is the technology that powers InstDrop's secure, direct file transfers between devices. Here's everything you need to know.
WebRTC (Web Real-Time Communication) is an open-source technology that enables peer-to-peer communication directly between web browsers and mobile applications. It was developed by Google and is now a W3C standard supported by all major browsers.
Unlike traditional web communication where data goes through a server, WebRTC creates a direct connection between two devices. This means faster transfers and better privacy – your data goes straight from A to B.
No Plugins
Works directly in your browser
Encrypted
All data is encrypted by default
Real-time
Direct peer-to-peer connection
Establishing a WebRTC connection involves several steps, but happens automatically and invisibly to users:
A server helps the two devices find each other and exchange connection information. This is the only part that goes through a server.
Both devices discover their network addresses and find the best path to connect directly, even through firewalls and NATs.
The devices establish an encrypted connection using DTLS (Datagram Transport Layer Security), similar to HTTPS.
Once connected, data flows directly between devices without going through any server. This is the P2P magic!
Your Device
Encrypted P2P
Other Device
Server is only used for initial connection setup (signaling). Your actual data never touches the server.
Security is built into WebRTC at its core. Encryption is mandatory and cannot be disabled:
All data channels are encrypted using DTLS, providing confidentiality and integrity.
Audio and video streams use SRTP encryption with strong cipher suites.
Each session uses unique encryption keys. Even if one session is compromised, others remain secure.
Unlike many protocols, WebRTC encryption cannot be turned off – it's required by the specification.
Video Conferencing
Google Meet, Zoom (web), and many others use WebRTC for video calls
Voice Calls
Discord, Slack, and other apps use WebRTC for voice communication
File Sharing
InstDrop and similar apps use WebRTC DataChannel for file transfers
Gaming
Real-time multiplayer games can use WebRTC for low-latency communication
InstDrop leverages WebRTC DataChannel for secure file transfers. Here's what that means for you:
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InstDrop uses WebRTC technology, which automatically encrypts all data using DTLS and SRTP protocols. Here's how you can verify it yourself.
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Paranoid Mode provides enhanced security for your transfers by ensuring exclusive 1:1 communication between exactly two devices.
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