CreateSSHonWindows.ps1

# Install the OpenSSHUtils module to the server. This will be valuable when deploying user keys.
Install-Module -Force OpenSSHUtils -Scope AllUsers

# Start the ssh-agent service to preserve the server keys
Start-Service ssh-agent

# Now start the sshd service
Start-Service sshd

cd ~\.ssh\
ssh-keygen

ssh-keygen -m PEM -t rsa -b 4096

#ssh-keygen detailed
https://github.com/MicrosoftDocs/azure-docs/blob/master/articles/virtual-machines/linux/create-ssh-keys-detailed.md

ssh-keygen \
    -m PEM \
    -t rsa \
    -b 4096 \
    -C "azureuser@myserver" \
    -f ~/.ssh/mykeys/myprivatekey \
    -N mypassphrase



# Make sure you're running as an Administrator
Start-Service ssh-agent

# This should return a status of Running
Get-Service ssh-agent

# Now load your key files into ssh-agent
ssh-add ~\.ssh\id_ed25519

# Make sure that the .ssh directory exists in your server's home folder
ssh user1@domain1@contoso.com mkdir C:\users\user1\.ssh\

# Use scp to copy the public key file generated previously to authorized_keys on your server
scp C:\Users\user1\.ssh\id_ed25519.pub user1@domain1@contoso.com:C:\Users\user1\.ssh\authorized_keys

# Appropriately ACL the authorized_keys file on your server  
ssh --% user1@domain1@contoso.com powershell -c $ConfirmPreference = 'None'; Repair-AuthorizedKeyPermission C:\Users\user1\.ssh\authorized_keys