如何为内部ELB创建证书？

Question

我创建了内部负载均衡器来传达我的应用程序。目前我想用证书打开HTTPS端口。如何创建？

1. SelfSigned certificate is not allowed.
2. Cert Only Signed by Amazon Authority,
3. DNS/EMAIL Validation Failed (Request a public certificate),

任何AWS专家都请告诉我，我们如何创建它？