java - JSch scp without known_host file and with StrictHostKeyChecking -

i trying copy files windows machine linux machine, working fine jsch far. can copy files using stricthostkeychecking no or need have known_host file linux machine copy to. using code java project should able send files automatically (unknown) linux machines. got username, password, ip , publickey machine. there way authenticate without known_host file , via publickey? because of security issues not want switch stricthostkeychecking no "com.jcraft.jsch.jschexception: unknownhostkey"

fileinputstream fis = null; jsch jsch = new jsch();  //jsch.setknownhosts(""); jsch.addidentity("d:\\uni\\arbeit\\remote_id_rsa"); session session=jsch.getsession(user, host, 22); session.setpassword(password); //session.setconfig("stricthostkeychecking", "no"); session.connect(); 

that not make sense. either know host public key , can verify either using known_host file or programmatically using:

public void knownhosts.add(hostkey hostkey, userinfo userinfo) 

(you can access instance of knownhosts using session.gethostkeyrepository())

for more details, see how resolve java unknownhostkey, while using jsch sftp library?

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or not know host public key, , cannot create secure connection (and stricthostkeychecking=no option).

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see my article verifying host key understand, about, , importance. article winscp client, it's valid in general ssh client.