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https://issues.apache.org/jira/browse/DERBY-5651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13230278#comment-13230278
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Rick Hillegas commented on DERBY-5651:
--------------------------------------
Thanks, Knut. If we made this change, what would a client application see when
it tried to connect with good credentials and securityMechanism=8 to a 10.9
server that uses BUILTIN authentication with substitutable passwords (declared
on the VM boot command line or declared in derby.properties or stored in the
database using the 10.5 hashing scheme)?
1) The connection attempt would be rejected with an error message saying that
the securityMechanism is no longer supported.
or
2) The connection attempt would succeed but there would be a warning attached
to the returned Connection. The warning would note that the securityMechanism
wasn't honored.
Thanks,
-Rick
> Protocol error when connecting to db with NATIVE authentication using strong
> password substitution
> --------------------------------------------------------------------------------------------------
>
> Key: DERBY-5651
> URL: https://issues.apache.org/jira/browse/DERBY-5651
> Project: Derby
> Issue Type: Bug
> Components: Network Server, Services
> Affects Versions: 10.9.0.0
> Reporter: Knut Anders Hatlen
>
> If you connect to a db with native authentication using strong password
> substitution to protect the password, you'll get a protocol error:
> ij(CONNECTION2)> connect
> 'jdbc:derby://localhost/db;user=app;password=papp;securityMechanism=8';
> ERROR 08006: A network protocol error was encountered and the connection has
> been terminated: A PROTOCOL Data Stream Syntax Error was detected. Reason:
> 0x18. Plaintext connection attempt to an SSL enabled server?
> I don't think strong password substitution is intended to work with NATIVE,
> but it should probably fail more gracefully. With BUILTIN, you'll get a more
> helpful error message:
> ij(CONNECTION5)> connect
> 'jdbc:derby://localhost/db2;user=app;password=papp;securityMechanism=8';
> ERROR 08004: DERBY SQL error: SQLCODE: -1, SQLSTATE: 08004, SQLERRMC:
> Connection authentication failure occurred. Either the supplied credentials
> were invalid, or the database uses a password encryption scheme not
> compatible with the strong password substitution security mechanism. If this
> error started after upgrade, refer to the release note for DERBY-4483 for
> options.
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