Assert that the stored fingerprint still matches the current pubkey and the user is actually linked to a Slack handle. Used by send to refuse to push ciphertext via Slack if the binding has drifted.
send
if the user is not linked or the fingerprint no longer matches
Assert that the stored fingerprint still matches the current pubkey and the user is actually linked to a Slack handle. Used by
sendto refuse to push ciphertext via Slack if the binding has drifted.