CloudServices/FxChat
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Last updated: 2014/04/08
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THIS PAGE IS A WORKING DRAFT | 
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Overview
Firefox Chat Service is messaging service that uses the Firefox Account keys to encrypt and sign message between people.
Project Contacts
Principal Point of Contact (EU)
- Tarek Ziade tarek@mozilla.com - Alexis Metaireau alexis@mozilla.com - Rémy Hubscher natim@mozilla.com
Goals
Having people being able to communicate using their phone or browser in a way that respects their privacy.
People can use one of their device to communicate with other people.
Requirements
Firefox Account
- People needs to log on the service using their Firefox Account.
- The Firefox Account assertion is used to register the public key on the server.
- The Firefox Account kB is used to build the public and private key for a user.
Workflow
Registration
- 1. Alice register her public key on the FxChat server
- 2. Bob register his public key on the FxChat server
Communication
Alice wants to send a message to Bob
- 1. Alice get Bob's public key on the FxChat server
- 2. Alice encrypt her message usign Bob's public key and sign it using her private key
- 3. Alice send the message to the server.
- 3.a The server send the message to all Bob's devices
- 3.b The server check the signature and store the encrypted message on Alice mailbox
- 4. Alice encrypt her message using her public key to sync her messages upon all her devices.
If Alice change her password, all message are lost because the private key is.