Comment by cyphar
7 years ago
I think our main disagreement is the usage of the word "usually". There are chat systems that have non-repudiation that aren't PGP -- I don't think there's much more to elaborate.
For personal communications, usually people want deniability. For business-related communication, you might want non-repudiation.
Probably the point I'm trying to make is that for me the communication scenarios seem similar enough, and the line between business and consumer comunication is so blurry with people using private mobile devices in business and expecting the same set of tools to cover all their communication, that saying "oh, there's another tool that does it the opposite way" isn't really a sufficient answer - perhaps we need to treat it as essentially a "flag" in the same tool; this useraccount/chatgroup/etc is authenticated and doesn't have any deniability whatsoever, but in the same app over there I have a pseudonymous contact with a marker over it that's effectively anonymous with full deniability and OTR communications.