Hi @grip_sri,
You can learn about how to generate a Kaltura Session [KS] here:
https://developer.kaltura.com/workflows/Generate_API_Sessions/Authentication
When a KS is required, you simply need to set it under flashvars
in your embed code, like so:
kWidget.embed({
"targetId": "kaltura_player",
"wid": "_$partner_id",
"uiconf_id": $playback_ui_conf_id,
"flashvars": {
"ks":"$ks"
},
"cache_st": 1450868353,
"entry_id": "$entry_id"
});