Key Compromise Impersonification

[ghost]

A known vulnerability of most handshakes (like Signal's) which allows the bearer of private keys to impersonate anyone to the original owner of that key. This is a very serious problem.

First: Does Olm have that vulnerability?

I came across this in a very interesting protocol, the 'Secret Handshake' or shs.
Github
Design Paper

It bring forward an interesting concept: To enable developers to think of private and public keys as access rights. This is a very powerful concept, which is defeated by the KCI vulnerability.

Edit: Fixed mistake. Latin background playing tricks with me.