How to use .p7b for Root CA in Ubuntu

Question

I need to add a p7b root ca to Ubuntu, in order to connect to services/servers for my company.

Based on what I have found on the internet, it seems that I need to convert this file to either .crt or .cer. I used the following commands to convert the file:

openssl pkcs7 -inform der -in cert.p7b -out cert.cer
openssl pkcs7 -inform der -in cert.p7b -out cert.crt

I then moved these files (I actually tried them one at a time) into /usr/share/ca-certificates/mycompany, and then added mycompany/cert.cer and mycompany/cert.crt to the /etc/ca-certificates.conf. After performing update-ca-certificates I still get root CA warning that the certificates/chain isn't in the system.

The only direction my company has given is for both Windows and adding this file into the OSX keychain. Any help is appreciated, because I don't like disabling https while using remote services/tools for my company.

Are you getting the CA error in your web browser? Or where does it appear? — , Apr 10 '16 at 18:45
I am attempting to connect to a server via a VMware application. — MIssyElliottSmith, Apr 11 '16 at 00:51

score 1 · Answer 1 · answered Jan 28 '21 at 20:44

I have faced a similar situation, may be this helps. I have received a certificate in .p7b format. First, I converted it into .pem format. Then, I imported it into Firefox (or your browser). After that, I could access my application using that certificate.

Now, in order to convert a .p7b into .pem do as follows.

openssl pkcs7 -inform der -in yourCert.p7b -print_certs -out yourCert.pem

Hope this helps.

How to use .p7b for Root CA in Ubuntu

1 Answers1