Anyone able to intercept the client-server SSL connection (and the server itself) can silently change the code you receive and execute, with a very low risk of getting caught. This effectively reduces the security of your end-to-end encrypted communication to that of your SSL connection to the server, i.e. Instead, you're re-requesting the code you'll run every single time you visit the site (making audits practically impossible). The fundamental problem with web interfaces is: there's no way to version, sign and securely distribute a web page. As explained by a community member in February 2017: This isn't possible at the moment, and it's unlikely that Signal will launch a web interface any time soon. generateRegistrationId ( ) // Store registrationId somewhere durable and safe. KeyHelper var registrationId = KeyHelper. Install timeĪt install time, a libsignal client needs to generate its identity keys, Include dist/libsignal-protocol.js in your webpage. Types/interfaces, which are available in most modern browsers. This implementation currently depends on the presence of the following Clients will need to maintain the state of the sessions they Clients will need to maintain the state of their signed Clients will need to maintain the state of their generated Key pair, as well as identity keys received from other clients. Clients will need to maintain the state of their own identity State is maintained in durable records which need to be kept for the life of Recipient and use it to establish a session.Īn established session encapsulates a lot of state between two clients. A client can receive a PreKeySignalMessage from a A client that wishes to send a message to a recipient canĮstablish a session by retrieving a PreKeyBundle for that recipient from the Sessions are established in one of two ways: There is no need toĮver tear down a session once one has been established. Then used for all subsequent encrypt/decrypt operations.
List of unsigned PreKeys, and transmit all of them to the server. PreKeys can alsoĪt install time, clients generate a single signed PreKey, as well as a large
A PreKey is an ECPublicKey andĪn associated unique ID which are stored together by a server. This protocol uses a concept called 'PreKeys'. A ratcheting forward secrecy protocol that works in synchronous andĪsynchronous messaging environments.
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