You’ve seen the phrase “end-to-end encrypted” on every messenger’s marketing page. Here’s what it actually means, without the jargon.
The basic idea
Imagine you write a letter, lock it in a box that only your friend has the key to, and post it. The courier carries the box from your hand to your friend’s. The courier can see that the box exists, but cannot open it. That’s end-to-end encryption (E2EE) in one sentence.
How keys actually work
Each device generates a pair of keys: a public key it shares, and a private key it keeps. When you send a message, your app encrypts it using the recipient’s public key. Only the recipient’s private key can decrypt it. The server in the middle forwards encrypted bytes; it has no way to read them.
What E2EE protects
- Message content from servers and network operators.
- Voice and video call audio (in apps that support encrypted calls).
- Attached photos, voice notes, and files, when implemented properly.
What E2EE does not protect
- Metadata — who you message and when.
- Backups stored unencrypted in the cloud.
- Screenshots taken on the other end.
- A compromised or unlocked device.
How VibTribe uses E2EE
VibTribe encrypts direct messages and 1-to-1 calls on your device before they leave. We pair that with an additional private vault for sensitive chats, and we minimise the metadata we keep so even our own systems learn less about you.