Unable to create curl query with SSL option

hi, i am trying to get the below command with curl for rest api conneciton and found it is working fine without using -E option , but when i try to with SSL and removing -k it would not work.

working query:
c:\curl>curl -k -X GET -u Administrator:password http://localhost:52311/api/computer/4813308/fixlets > c:\test.xml

not working query:

i have followed the below url for generating SSL certificate and settings for Bigfix APP server.

https://www.ibm.com/support/knowledgecenter/SSQL82_9.5.0/com.ibm.bigfix.doc/Platform/Config/c_restapi_https_registry_set.html

http://www-01.ibm.com/support/docview.wss?uid=swg21505848

C:\Temp\curl>curl -E c:\temp\cert.pem -X GET -u Administrator:password https:/localhost:52311/api/computers
curl: (60) SSL certificate problem: self signed certificate
More details here: https://curl.haxx.se/docs/sslcerts.html

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.