Just follow the steps I am suggesting and you will get your desired key
1. Download videos from the given link
2. Download gilisoft gem player for your pc or for your mobile
3. Then download drm protection by gilisoft in your laptop or pc
4. You will see a box there name as create password
5. Click on that
6. In password section just write decryption key of your course Which are given here
yL3@cQ6xfjGz2TDhxbWCS01ndf CSE LIVE
yL3@cQ6xfjGz2TDhxbWCS02ndf CSE CTQ
yL3@cQ6xfjGz2TDhxbWEE02ndf EE CTQ
yL3@cQ6xfjGz2TDhxbWME03ndf ME QRC
yL3@cQ6xfjGz2TDhxbWME02ndf ME CTQ
yL3@cQ6xfjGz2TDhxbWME01ndf ME GATE+ ESE -Live
yL3@cQ6xfjGz2TDhxbWCL01ndf Civil GAte+ESE -Live
yL3@cQ6xfjGz2TDhxbWEC02ndf ECE CTQ
yL3@cQ6xfjGz2TDhxbWEC01ndf ECE Live
yL3@cQ6xfjGz2TDhxbWGS01ndf GENERAL ES
7. Then play your downloaded video in gilisoft gem player
8. It will generate a machine code
9. Copy that machine code and paste it into drm protection
10. And in watermark section you can leave it blank
11. Then at the end tap on create play password
12. Here you go
13. You have your key for your course and for your respective machine code
