Bug 94238

Summary:	Signal Protocol (Signal Messenger, formerly Axolotl / TextSecure) support for Telepathy
Product:	Telepathy	Reporter:	Dennis Schridde <devurandom>
Component:	general	Assignee:	Telepathy bugs list <telepathy-bugs>
Status:	RESOLVED MOVED	QA Contact:	Telepathy bugs list <telepathy-bugs>
Severity:	normal
Priority:	medium	CC:	daniel.scharon, diane, freedesktop, kai
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Dennis Schridde 2016-02-21 19:01:25 UTC

It would be nice if Telepathy would support the Axolotl protocol (Signal messenger, formerly TextSecure).

There are currently three implementations, for Android, iOS and Google Chrome:
* https://github.com/WhisperSystems/Signal-Android
* https://github.com/WhisperSystems/Signal-iOS
* https://github.com/WhisperSystems/Signal-Desktop

An implementation of the underlying protocol is available via the libaxolotl-c library:
* https://github.com/WhisperSystems/libaxolotl-c

The Java library contains more documentation:
* https://github.com/whispersystems/libaxolotl-java

The wire protocol is described here:
* https://github.com/WhisperSystems/Signal-Android/wiki/ProtocolV2

And the specs are available here:
* https://github.com/trevp/axolotl/wiki

Comment 1 diane 2016-04-21 17:32:06 UTC

Yes, Signal protocol be nice as would OMEMO. The only end-to-end crypto support currently in telepathy is a component of KDE-Telepathy that provides an OTR proxy between incoming messages and the chat widget.

I suspect it might be possible to add additional algorithms there.

Though there's also some additional work needed before the proxy could help Empathy.

Unfortunately I don't believe the few people still contributing to telepathy or its clients have the time to work on this.

Comment 2 Dennis Schridde 2016-09-10 18:21:12 UTC

The protocol was renamed: https://whispersystems.org/blog/signal-inside-and-out/

Comment 3 GitLab Migration User 2019-12-09 11:23:01 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/telepathy/telepathy-spec/issues/177.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.