Webvpn certificate

[tahequivoice]

How do I create a self signed certificate that does not use MD5 hash?  I have an ASA that needs to pass a scan, and this is the only thing showing up, port 443 for Anyconnect fails due to weak hash MD5.

[tahequivoice]

Apparently this has something to do with the version of OS on the ASA. I found that later releases are hashed with SHA1. This one is running 8.0.

If someone has a way to do it without having to either upgrade the OS or obtain a CA, that would be great.