scriptjunkie@robertguetzkow @dangoodin I think you're assuming there's another "from" address in the message or connection context or something. There isn't. The public key *is* the identifier of the sender. There's no separate "from" address. The attacker can't put a different key into a message "from" Alice. It would no longer be a message from Alice. It would (accurately) be a message from the attacker.
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