def interpret_key_results(result: dict) -> str:
    if not isinstance(result, dict):
        return "There was an error with the format of the reply from the operation."

    # unpack results:
    valid = result.get('valid', False)
    comparison = result.get('comparison', 'error')
    error_msg = result.get('message', None)

    # errors:
    if error_msg:
        if error_msg == "api_connection_issue":
            return "There was a connection error with connecting to the API."
        elif error_msg == "invalid_key":
            return "Your original public key is in an invalid format to begin with."
        else:
            return "Unknown Error."

    # comparison:
    if comparison == "same":
        first_sentence = "The key you had locally matched what the server had also."
    elif comparison == "different":
        first_sentence = "Your local key was different than the server's key."
    else:
        first_sentence = "There was an error with the comparison."

    # validity:
    if valid:
        second_sentence = "The signature now matches with the new key."
    else:
        second_sentence = "But the signature still does not match, even with the new key.  If you prepare tickets anyway, they might not verify when used."

    # final return
    final_msg = first_sentence + " " + second_sentence
    return final_msg