SecureFTPConnection.PreferredHostKeyAlgorithms Issue

Question

I'm testing out some code to use the SecureFTPConnection and with the ServerValidation set to None everything works fine. However, when I set it to Automatic and point it at my known_hosts file I see the following error in the log:

ERROR [SSHFTPClient] 13 Jan 2011 11:04:34.072 : No ssh-dss public key found for host 'mysftphost.com'

The known_hosts file does exist and it does have a key for that host. The issue seems to be that the PreferredHostKeyAlgorithms is set to DSA | RSA and that it only actually checks for the DSA key when it is set this way. If I set the PreferredHostKeyAlgorithms to RSA it finds the key in the file and connects correctly.

I can use this workaround for now but I'd like to be able to support both key types if possible...

Thanks!
Matt

Answer 1

For DSA | RSA, the client is sending to the server a list consisting of DSA,RSA and the server always sends back the first one.

You need to be able to send RSA,DSA so we'll work out a way to do this - we might have to allow people to manually specific the order.

Answer 2

Ok, we've got a build that permits you to do this. Email us for it if you'd like it now, or else it'll be out in 7.3.0, which will be released next week.