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  1. Apache NiFi
  2. NIFI-1956

Add "keyboard-interactive" option to SFTPTransfer

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.0.0, 0.7.0
    • Fix Version/s: 1.0.0, 0.7.0, 1.0.0-Beta
    • Component/s: None
    • Labels:
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      Description

      With RFC-4256 some SSH servers may no longer support or enable "password" as a valid authentication option in favor of "keyboard-interactive".
      This results in

      Exception in thread "main" com.jcraft.jsch.JSchException: Auth fail
      

      And even though the spec discusses the authentication mechanism where user will be prompted for a password, JSch provides an authentication provider which handles such prompt behind the scenes as long as user sets password in a session.
      Belo code shows how to reproduce the issue (at least in osx):

      public static void main(String[] args) throws Exception {
              JSch jsch = new JSch();
              Session session = jsch.getSession("<user>", "localhost", 22);
              session.setPassword("<password>");
              Properties properties = new Properties();
              properties.setProperty("StrictHostKeyChecking", "no");
              //properties.setProperty("PreferredAuthentications", "publickey,password,keyboard-interactive");
              properties.setProperty("PreferredAuthentications", "publickey,password");
              session.setConfig(properties);
              session.connect();
              System.out.println("connected");
          }
      

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              • Assignee:
                ozhurakousky Oleg Zhurakousky
                Reporter:
                ozhurakousky Oleg Zhurakousky
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                Dates

                • Created:
                  Updated:
                  Resolved: