How to point kong to its truststore

Can anybody know how to configure kong to its truststore (ca.crt) ? Please help

Use the follow Nginx directive to set it up:

Thanks for your reply,
I am using kong 1.2.0rc1. I have tried above settings.
from curl it is working fine.

curl: (60) Issuer certificate is invalid.
More details here:

curl performs SSL certificate verification by default, using a “bundle”
of Certificate Authority (CA) public keys (CA certs). If the default
bundle file isn’t adequate, you can specify an alternate file
using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
the bundle, the certificate verification probably failed due to a
problem with the certificate (it might be expired, or the name might
not match the domain name in the URL).
If you’d like to turn off curl’s verification of the certificate, use
the -k (or --insecure) option.

when i tried from browser it is allowing the wrong certificate.
Plase help me in this