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From "Knut Anders Hatlen (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-5651) Protocol error when connecting to db with NATIVE authentication using strong password substitution
Date Thu, 15 Mar 2012 19:50:38 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13230471#comment-13230471

Knut Anders Hatlen commented on DERBY-5651:

I'd prefer option 1. Option 2 would expose the cleartext password on the wire even though
the user has explicitly requested that it's not exposed. Better to fail and let the user take
the appropriate action than compromising the password.
> Protocol error when connecting to db with NATIVE authentication using strong password
> --------------------------------------------------------------------------------------------------
>                 Key: DERBY-5651
>                 URL: https://issues.apache.org/jira/browse/DERBY-5651
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Server, Services
>    Affects Versions:
>            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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