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Key Compromise Impersonation (KCI)(0,1) is a failure mode in Authenticated Key Exchanges (AKE) where a client $A$ has their static Diffie-Hellman (DH) identity key pair $(K_{priv}^{A_{ID}}, \space K_{pub}^{A_{ID}})$ compromised by an adversary $V$. With $A$'s private identity key, $V$ is able to ...