Follow steps below to easily get Certificate :
Part 1: Follow steps below to easily obtain the CSR file :
Step 1 : Open Utilities on your Mac
Step 2 : Open Keychain Access
Step 3 : Click on Keychain Access
Step 4 : Click on Certificate Assistant
Step 5 : Select Request a Certificate from a Certificate Authority from the menu
Step 6 : Select User Email Address and provide CA Email Address
Step 7 : Select Saved to Disk and click on Continue
Step 8 : Click on Save
Step 9 : Click on Show in Finder
Step 10 : Here is your CSR file
Step 11 : Click on CSR file
Step 12 : Click on Continue
Step 13 : Select Option and click on Continue
Step 14 : Select Identity Type and Certificate Type by click on dropdown menu
Step 15 : Choose Certificate Type and click on Continue
Step 16 : Click on Continue
Step 17 : Click on Done
Part 2: Follow steps below to easily obtain the .cer certificate :
Step 1 : Open Keychain Access on your mac and double click on the .cer file and it will be saved to the keychain
Step 2 : Select the appropriate file from the Keychain
Step 3 : Right click on it and select Export Files
Step 4 : Select the option wherever you want save the files and click on file formate dropdown menu
Step 5 : Tap on Certificate (.cer)
Step 6 : Click on Save button
Step 7 : Go to where you save the Certificiate
Step 8 : Here is your Certificate (.cer) upload it