SSL Certificates
How you can easily create and manage SSL certificates
Wildcard Certificates
Wildcard Certificates are useful if you want to generate one certificate for multiple hosts within the same domain.
That last part is important: a certificate with the CN of *.example.com is valid for foo.exaplme.com and bar.example.com but is of no use for baz.example.net.
CSR
Wildcard certs are very easy to produce, simply use your wildcard in place of your hostname in the CN:
CN = *.example.com
and generate it as normal.
Signing
No changes required!
The upshot should be a certificate with a wildcard in the Subject's CN:
openssl x509 -in ssl-server-wildcard.crt -noout -text | grep Subject
Subject: C=GB, ST=Buckinghamshire, L=Newport Pagnell, O=Example Limited, CN=*.example.com/emailAddress=webmaster@example.com
...
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