CREATING THE SSH KEYS IN WINDOWS - ORACLE CLOUD

Open Windows PowerShell - 

Change to your "Key" directory

Type the command - "ssh-keygen -b 2048 -t rsa -f <FILENAME>" . Leave the passphrase empty. 

ssh-keygen -b 2048 -t rsa -f  OracleInstanceKey

Convert private key to putty, open puttygen and load the private key generated.

Open private key in putty format.

Save private key in putty format, leave passphrase empty.

Use the same file name, OracleInstanceKey.ppk

Final Look -

Use the OracleInstanceKey.pub contents to copy and paste in instance 

Paste here in setting up instance -

Connect to you instance using putty, IP from instance - 

Use opc ID - 

The file created .ppk format - 

Press "Open" button