David Handermann created NIFI-8711:
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Summary: Support keyboard-interactive authentication for SFTP
Key: NIFI-8711
URL: https://issues.apache.org/jira/browse/NIFI-8711
Project: Apache NiFi
Issue Type: Improvement
Components: Extensions
Affects Versions: 1.13.2, 1.10.0
Reporter: David Handermann
Assignee: David Handermann
Changing the supporting library from JSch to SSHJ resulted in removing support
for keyboard-interactive authentication when configuring a password in SFTP
components.
Some SSH servers disable password authentication but support
keyboard-interactive authentication. SSHJ provides support for
keyboard-interactive authentication using a password, and SFTP components
should attempt both password authentication and keyboard-interactive
authentication when a password is configured.
Without support for keyboard-interactive authentication, SFTP processors report
the following error even when configured with valid username and password
credentials:
{{UserAuthException: Exhausted available authentication methods}}
SSHJ reports the following debug log with valid credentials when the server has
disabled password authentication:
{{net.schmizz.sshj.userauth.UserAuthImpl `password` auth failed}}
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