The SSH (Secure Shell) protocol is a method for secure remote login from one computer to another. SSH enables secure system administration and file transfers over insecure networks using encryption to secure the connections between endpoints. SSH keys are an important part of securely accessing Oracle Cloud Infrastructure compute instances in the cloud.

Oracle always recommend you use the Oracle Cloud Shell to interface with the OCI compute instance you will create. Oracle Cloud Shell is browser-based, does not require installation or configuration of software on your laptop, and works independently of your network setup.

To use the Cloud Shell machine, your tenancy administrator must grant the required IAM (Identity and Access Management) policy.

• To start the Oracle Cloud shell, go to your Cloud console and click the cloud shell icon at the top right of the page.

• Once the cloud shell has started, Choose the key name, This will be the keyname you will use to connect to any compute instances you create. Press Enter twice for no passphrase.

mkdir .ssh

cd .ssh

ssh-keygen -b 2048 -t rsa -f <<sshkeyname>>

Please find the below notes which I has done.

osamaobama@cloudshell:~ (us-phoenix-1)$ mkdir .ssh
osamaobama@cloudshell:~ (us-phoenix-1)$ cd .ssh
osamaobama@cloudshell:.ssh (us-phoenix-1)$ ssh-keygen -b 2048 -t rsa -f cloudshellkey
Generating public/private rsa key pair.
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in cloudshellkey.
Your public key has been saved in cloudshellkey.pub.
The key fingerprint is:
SHA256:VJLFZbU6v2PHzCJtWKHNEgV8UH7RGpFXny63PvXDatM osamaobama@5e3feabe028c
The key's randomart image is:
+---[RSA 2048]----+
| .+oo==+++|
| .o....=.*|
| . oo=o|
| . ..+. |
| S o* + |
| oo* o|
| =+=o|
| ooBE*|
| .=+=o|
+----[SHA256]-----+
osamaobama@cloudshell:.ssh (us-phoenix-1)$ ls
cloudshellkey cloudshellkey.pub
osamaobama@cloudshell:.ssh (us-phoenix-1)$ cat cloudshellkey.pub 
ssh-rsa AAAAB3NzaC1yc**********************************************
osamaobama@cloudshell:.ssh (us-phoenix-1)$

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