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https://issues.apache.org/jira/browse/DERBY-5651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13229544#comment-13229544
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Rick Hillegas commented on DERBY-5651:
--------------------------------------
Same experiment with NATIVE authentication:
ij version 10.9
ij> connect
'jdbc:derby://localhost:8246/db;user=admin;password=adminpassword;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?
ij> connect
'jdbc:derby://localhost:8246/db;user=nonexistentuser;password=adminpassword;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?
ij> connect
'jdbc:derby://localhost:8246/db;user=nonexistentuser;password=adminpassword';
ERROR 08004: Connection authentication failure occurred. Reason: userid or
password invalid.
> 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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