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Joseph Witt commented on NIFI-5816: ----------------------------------- SSHJ is ALv2 so that is good. I've not confirmed whether it has any dependencies and if so what they're licensing is but this is a good start. Such a switch would require a lot of testing/verification as the SFTP processors that depend on JSCH are extremely heavy use and for many years type processors. > SFTP cannot connect due to JSch limitations > ------------------------------------------- > > Key: NIFI-5816 > URL: https://issues.apache.org/jira/browse/NIFI-5816 > Project: Apache NiFi > Issue Type: Improvement > Components: Extensions > Affects Versions: 1.8.0 > Reporter: Laurenceau Julien > Priority: Minor > > Hi, > The JSch library used for SFTP does not support HostKeyAlgorithms=ed25519 > whereas it is the current standard. This make SFTP / SSH unusable when > dealing with recent openssh config. > On dbeaver project they switched to sshj. > [https://github.com/dbeaver/dbeaver/issues/2202] > [https://community.hortonworks.com/answers/226377/view.html] > > https://stackoverflow.com/questions/2003419/com-jcraft-jsch-jschexception-unknownhostkey > One more argument against JSch is that it does not support rsa key length > other than default (2048). > ssh-keygen -o -t rsa -b 4096 -f id_rsa -> does not work with nifi > ssh-keygen -t rsa -f id_rsa -> works with nifi > Thanks and regards > JL > PS : sorry but I do not know nifi deep enough to fill all fields. > > -- This message was sent by Atlassian JIRA (v7.6.3#76005)