First of all, you can view Chrome's certificate store here: "Settings" / "Show advanced settings..." / "HTTP/SSL" / "Manage certificates..."
The server certificates (you import) will show up on the "Servers" tab.
You've to install the
package and use
to manage the certificate store. It's location is:
To list the certificates:
certutil -d sql:$HOME/.pki/nssdb -L
To add a PEM certificate:
certutil -d sql:$HOME/.pki/nssdb -A -t "P,," -n "some_nickname" -i some_certificate.pem
P.S.: note that the "sql:" prefix for the
option is important ... if you omit it, you'll get an error (eg. "certutil: function failed: The certificate/key database is in an old, unsupported format."
option's value consists of a series of flags. "P" should be used for self-signed certificates and "C" should be used for root (CA) certificates.