If you look in your certs directory (ls -l /etc/ssl/certs) you will see that all of the certs have sensible certificate names like GeoTrust_Global_CA.pem, but there are also a load of symbolic links with names like 2c543cd1.0 that point to the certificate files with the human readable names.

Those symlink names like 2c543cd1.0 are hashes of the certificate files, and are there to enable programs on your computer to quickly check whether the root certificate is in your computer's certificate directory or not. Some programs manage to recognise that the certificate is installed just fine without the symlinks, but some of them do not. Openssl is one of the ones that doesn't.

So, we need to make use of one more command to create a symlink for the newly installed cacert-root.crt (this will also refresh the symlinks for the rest of the certs in the folder):

Code:

sudo c_rehash /etc/ssl/certs