ssh-rsa ****there_is_public_ssh_key****  some_text_typically_user@host
ssh-rsa  *****second_pub_key****  another_text
...

SFTPAuthorizedUserKeys file:/some_key_ssl_store/%u/autorized_keys

---- BEGIN SSH2 PUBLIC KEY ----
Comment: "some comment"
*****public_key_splitted_with_some_lines*****
****second line for the same key ******
****third line*****
****as many lines as is needed *****
***last_line***==
---- END SSH2 PUBLIC KEY ----