Help needed in Curl & Wget

We are trying to invoke a https service from our unix script using curl command. The service is not getting invoked because it is SSL configured. Bypassing certification (using curl �k) does not work.

curl -k https://site
curl -k -x IP:Port https://site
curl -k -x IP:443 https://id:pwd@site

We also tried using wget service (--no-check-certificate). This bypassed the certification check but then it shows up the url to enter the login id/pwd.

wget --no-check-certificate -O -