[endisneigh]

How exactly would you implement an interoperable E2EE group chat app where you can arbitrarily add and remove people like with iMessage?

The EU law linked does not actually recommend anything specifically, just vaguely states interoperability being a goal.

Certain apps will have certain functionality. Unless you're willing to constrain the functionality it's not really possible.

Right now everyone could already use email which supports encryption. They don't, though.

[vageli]

> How exactly would you implement an interoperable E2EE group chat app where you can arbitrarily add and remove people like with iMessage?

Doesn't the matrix chat app allow for this? Might be useful to learn how they do it if this is of interest.

https://matrix.org/docs/guides/end-to-end-encryption-impleme...

[dingleberry420]

The same way as they're doing it right now, just well-documented and open. Let the bigcrops create working groups to hammer out the details.

[OJFord]

How is the problem you're imagining solved by having just a single company in charge of the app?

[endisneigh]

It’s not - the company usually also has the keys, so you have to trust them.

[OJFord]

If you call that E2EE then all E is.

[endisneigh]

If you want interoperability you would need true e2ee, I never claimed single company regular encryption was e2ee