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I generated a wildcard certificate for multiple (wildcard) domains (SANS, alternate domain names + IP) (see https://blog.flowl.info).

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I imported the certificate into Firefox, Chrome and Windows certificate Storage. but when I visit one of my sites it still asks me wether to trust that cert or not (untrusted).

I expect Firefox/Chrome to trust a site when I imported the cert.

Where is the mistake?


I generated the cert this way:

openssl genrsa -out flowl-2014-2.key 4096

openssl req -new -out flowl-2014-2.csr -key flowl-2014-2.key -config openssl.conf

openssl x509 -req -days 365 -in flowl-2014-2.csr -signkey flowl-2014-2.key -out flowl-2014-2.crt -extensions v3_req -extfile openssl.conf

With config:

req_extensions = v3_req

# Extensions to add to a certificate request
basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment
subjectAltName = @alt_names

DNS.1 = *.flowl.info
#..... all the domains
IP.1 = #...the ip(s)


I generated a .p12 file of my keys/certs and imported that into Firefox, restarted, but it STILL shows my site as untrusted and asks to add an exception....


The self signed x509 cert isn't online anymore, I use a CA cert to sign my own cert now like suggested in the accepted answer. It seems a self-signed x509 wildcard cert cannot be imported into the browsers manually and permanently - I tried everything and always got a warning. It works with the CA signed cert now.

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Dauerhaft = permanent –  DanFromGermany Jun 11 '14 at 11:56
+1 for providing a real URL with a real certificate to look at. –  jww Jun 12 '14 at 7:04
"I imported the certificate into Firefox, Chrome and Windows certificate Storage. but when I visit one of my sites it still asks me wether to trust that cert or not (untrusted)." - what exactly, did you import? Did you import your CA (the issuer C=DE, ST=Hamburg, L=Hamburg, O=flowl.info, OU=flowl.info, CN=Daniel Wendler/emailAddress=daniel.wendler.hamburg@gmail.com)? Or was it the server certificate? If the server certificate, where exactly did you put it in Chrome? –  jww Jun 12 '14 at 7:07
@noloader I imported the x509 self signed certificate which is not active anymore, I'm now using my own CA cert like suggested in the answer below - this works with all browsers. I imported the same certificate manually which the browsers let me add automatically when I hit "download cert.. (add permanently).. continue anyways". In Chrome: Settings -> advanced settings -> certificates -> import. –  DanFromGermany Jun 12 '14 at 7:30

1 Answer 1

up vote 1 down vote accepted

what you can do is generate a self signed CA (Certification Authority), and then use it to sign a domain or more, even a starred domain (*.flowl.info).

I've done it for my server: https://dev.fouin.org/ (i have a Startcom for https://www.fouin.org, and all the other virtualhosts uses a *.fouin.org which i signed with my sefl signed AC).

hope it helps, even if it's not exactly what you asked.

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It was a little bit trouble setting this up but it works like a charm, thank you! –  DanFromGermany Jun 11 '14 at 14:45

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