认证接收链（ARC）
基于的ARC实现。
import { ARC } from "arc/arc.hsl";
import { AuthenticationResults } from "authentication-results/authentication-results.hsl";
$chain = ARC::chainValidate($mime);
if ($chain["status"] == "pass" or $chain["status"] == "none")
{
ARC::seal($mime,
"201805", "example.com", "pki:arc",
$chain,
AuthenticationResults()
->SPF(["smtp.remote-ip" => $senderip])
->DKIM()
