Support Delta Chat (i.e. Autocrypt along with "countermitm")
#413 opened on Jun 25, 2020
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Description
🗣 Suggestion
Recently I started using Delta Chat and I'm really amazed. It's just a plain MUA but with WhatsApp-like UI along with Autocrypt for everything and so called "verified groups" on top (verified groups prevent the only Autocrypt downside - i.e. man-in-the-middle attacks - by implementing countermitm).
Here I'd like to start discussion about potential support of Delta Chat (basically boiling down to Autocrypt in Cypht and NEXTLEAP countermitm specification) in Cypht.
This means not only reading messages (though this would be the first and probably easiest step), but also composing messages.
There are two types of messages - standard Autocrypt messages and then verified group messages (these use the countermitm extension and require importing e.g. a QR code provided by any existing verified group member prior to joining the group).
Note, Delta Chat community has some unclear "plans" to provide a web application runnable on a web server (but it has very low priority), so it might make sense to coordinate the efforts here with them. First I'd like to know the opinion of Cypht devs, users and community though.