Unable to secure tunnel SSH via private key to IoT Greengrass Core Device.

Hi,

I'm having trouble SSHing into my core devices by connecting via a private key.

I have successfully installed IoT Greengrass on a raspberry pi and can successfully SSH into it in the following three ways:

• Creating a secure tunnel and logging in via username and password.
• SSHing into the device on my local network with username and password.
• SSHing into the device on my local network using my private ssh key; where the public key has been copied to the device .ssh/authorized_keys

However, when using the AWS console, I am unable to login via the same private key and given the error:

"Failed to authenticate. Try again."

Here are the permissions for both .ssh and .ssh/authorized_keys

root@raspberrypi:/home/pi# stat .ssh File: .ssh Size: 4096 Blocks: 8 IO Block: 4096 directory Device: b302h/45826d Inode: 489068 Links: 2 Access: (0700/drwx------) Uid: ( 1000/ pi) Gid: ( 1000/ pi) Access: 2023-02-01 00:01:43.386002027 +0000 Modify: 2023-03-16 17:17:34.815483753 +0000 Change: 2023-03-16 17:17:34.815483753 +0000 Birth: -

root@raspberrypi:/home/pi/.ssh# stat authorized_keys File: authorized_keys Size: 1648 Blocks: 8 IO Block: 4096 regular file Device: b302h/45826d Inode: 489071 Links: 1 Access: (0600/-rw-------) Uid: ( 1000/ pi) Gid: ( 1000/ pi) Access: 2023-03-16 17:17:34.815483753 +0000 Modify: 2023-03-16 17:17:34.815483753 +0000 Change: 2023-03-16 17:17:34.815483753 +0000 Birth: -

On my device (connected via a local network and the same private key), I do not see any recent logs in: /greengrass/v2/logs/greengrass.log

Am I placing my public key in the correct location for a secure tunnel via a private key, or am I missing some additional configuration?

The device in question has the following components:

Any help would be appreciated.

Thanks!