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Molly Brown Certificate Zone Help

Lindsay newsspeak11 at gmail.com

Tue Feb 16 16:58:57 GMT 2021

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I was able to solve my problem, although I'm still not sure what the issuewas.

I stumbled across solderpunk's gemcert<https://tildegit.org/solderpunk/gemcert> program for creatingcertificates. His program provides server and client key pairs. As part ofthe client key creation process, it automatically outputs a certificatefingerprint with SHA256 encoding.

With this I did the following:1. Reinstall server certificates issued by gemcert2. Add client key and certificate to Kristall issued by gemcert3. Added the hash provided by gemcert from creating client certificates tothe CertficiateZone are of the Molly Brown configuration file.4. Restart Molly Brown

I can now browse the restricted area using the client certificate, but I'mstill not sure why this worked and creating one through OpenSSL did notwork. The only difference I could see is that gemcert creates ECDSAcertificates instead of the RSA ones I tried previously.

If anyone has any insights, I'd love to understand why this was successful.Unfortunately the only thing I learned through all this is to use gemcertfor client certificates and I have no idea why.

On Sun, Feb 14, 2021 at 7:03 PM Lindsay <newsspeak11 at gmail.com> wrote:

After some additional reading and trial and error, I think I've made
progress, but still not successful.
I've now created a client key and a signed client certificate and added
them both to Kristall's certificate manager. I've also managed to generate
what I believe is a proper SHA256 has using this command on my client
certificate: openssl dgst -sha256
I believe this is a proper hash as it matches the style and length of the
examples proved in the molly.conf file. I've also verified that the
fingerprint of the key pair in Kristall matches the fingerprint of the
client certificate I used to generate the SHA256 hash.
The Certificate Zone area of the config file now looks something like this:
[CertificateZones]
"^/foo/" = [
"d146953386694266175d10be3617427dfbeb751d1805d36b3c7aedd9de02d9af"
]
Now that I have a certificate value that looks to be correct, I'm not sure
what else to try. Are there any verbose logs available that I can enable to
see what is being passed to Molly Brown or how the certificates are being
compared?
On Sat, Feb 13, 2021 at 7:31 PM Lindsay <newsspeak11 at gmail.com> wrote:
Greetings all,
I am trying to set up a server using Molly Brown and am having trouble
implementing its "Certificate Zone" feature. If this isn't the correct
forum for this question, please let me know.
So far, I've set a directory require a certificate and successfully
tested it - I am free to access all areas on the site and receive a
certificate challenge to the one directory as configured.
The problem I'm having is understanding how to add a specific client
fingerprint to the "allowed" list in the config file. The Molly Brown
documentation specify an allowed value takes the format of "hex-encoded
SHA256 fingerprints of client certificates". I have what I think is a valid
fingerprint that I then converted into hex added to this section (which is
significantly longer than any of the examples provided), but the
corresponding certificate is rejected when provided.
I am certain this is user error. I have very little knowledge on how to
manage certificates and rely on google searches when generated the correct
ones for this server. Assuming the values provided in the example config
file are based on real, working values, my value is nearly 4 times as long.
Here's what I did:
1. Generate a new key with following command:
openssl req -new -newkey rsa:4096 -x509 -sha256 -days 3650 -nodes -out
cert.crt -keyout key.key
2. Changed extension on output keys to .pem as required by Kristall
Browser
3. Imported ley and cer into Kristall
4. Converted the fingerprint of the cert into hexadecimal with the
following command:
echo -n "[Fingerprint went here]" | od -A n -t x1
5. Copied hexadecimal value into Molly Brown configuration file so the section looks like this:
[CertificateZones]
"^/foo/" = [
#
"d146953386694266175d10be3617427dfbeb751d1805d36b3c7aedd9de02d9af",
"aa1ee9e5a1572a4677e9f59e181b5c6a27527c7602bd441e7bf909f681db2eb36c32246c5193a270fcfbc509fef9349b03d6a299907580c90566c881752a01adcd9055fae1e53a308c56020462849b42ab777d67c9c5e3fd0427ec6d42a997",
]
6. Relaunch Molly Brown
Apologies if this is an elementary problem or the incorrect forum for such a question and appreciate any help that is provided.
Tanks!
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