You can use "racadm sshpkauth"  to import or delete public SSH key to iDRAC users.  You can get more detail on usage by running help command "racadm help sshpkauth" or from RACADM CLI guide (link given below) <ADMIN NOTE: Broken link has been removed from this post by Dell>   Importing server configuration file will not delete SSH key from iDRAC    
Is there a racadm command to upload and install a public ssh key into a specific drac user's account.  In the GUI I see functionality to add 4 separate keys per user allowing ssh access from the remote devices that have the private key without a password.  I have not found a command for this in the latest iDRAC 7/8 CLI PDF.  I also do not see that installed public keys are exported with a Server Profile export which would mean that access would be lost upon profile import. Is this correct? If so will this be remedied in future iDRAC releases?
Import a public ssh key for a specific DRAC user via racadm?