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From "Rick Hillegas (Issue Comment Edited) (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Edited] (DERBY-866) Derby User Management Enhancements
Date Tue, 31 Jan 2012 18:34:10 GMT

    [ https://issues.apache.org/jira/browse/DERBY-866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13197081#comment-13197081
] 

Rick Hillegas edited comment on DERBY-866 at 1/31/12 6:32 PM:
--------------------------------------------------------------

I have returned to the topic of implementing network password substitution for NATIVE authentication.
I do not believe this is possible.

NATIVE authentication only works if passwords are hashed by a strong algorithm specified by
the derby.authentication.builtin.algorithm property. But password substitution is not possible
with these strong algorithms, according to the "Network client security" section of the Admin
Guide, and according to the 10.6.1.0 release note accompanying the work on DERBY-4483 (see
http://db.apache.org/derby/releases/release-10.6.1.0.html#Note+for+DERBY-4483 ).

This makes sense. For password substitution to work with strong algorithms, the network handshake
would have to give the client the details about how the password is hashed on disk at the
server end--those details would have to be transmitted BEFORE the substitute password is computed
by the client. I am not aware of any such negotiation in the Derby network protocol.

NATIVE passwords transmitted over the wire must be secured the same way that BUILTIN passwords
are secured after the fix to CVE-2009-4269:

1) Both ends of the connection must use a capable JCE which handles the 256 bit primes needed
by ClientDataSource.ENCRYPTED_USER_AND_PASSWORD_SECURITY.

2) Or the entire network traffic must be encrypted with SSL/TLS.

                
      was (Author: rhillegas):
    I have returned to the topic of implementing network password substitution for NATIVE
authentication. I do not believe this is possible.

NATIVE authentication only works if passwords are hashed by a strong algorithm specified by
the derby.authentication.builtin.algorithm property. But password substitution is not possible
with these strong algorithms, according to the "Network client security" section of the Admin
Guide, and according to the 10.6.2.0 release note accompanying the work on DERBY-4483 (see
http://db.apache.org/derby/releases/release-10.6.1.0.html#Note+for+DERBY-4483 ).

This makes sense. For password substitution to work with strong algorithms, the network handshake
would have to give the client the details about how the password is hashed on disk at the
server end--those details would have to be transmitted BEFORE the substitute password is computed
by the client. I am not aware of any such negotiation in the Derby network protocol.

NATIVE passwords transmitted over the wire must be secured the same way that BUILTIN passwords
are secured after the fix to CVE-2009-4269:

1) Both ends of the connection must use a capable JCE which handles the 256 bit primes needed
by ClientDataSource.ENCRYPTED_USER_AND_PASSWORD_SECURITY.

2) Or the entire network traffic must be encrypted with SSL/TLS.

                  
> Derby User Management Enhancements
> ----------------------------------
>
>                 Key: DERBY-866
>                 URL: https://issues.apache.org/jira/browse/DERBY-866
>             Project: Derby
>          Issue Type: Improvement
>          Components: Services
>    Affects Versions: 10.2.1.6
>            Reporter: Francois Orsini
>            Assignee: Rick Hillegas
>         Attachments: Derby_User_Enhancement.html, Derby_User_Enhancement_v1.1.html, DummyAuthenticator.java,
UserManagement.html, UserManagement.html, UserManagement.html, UserManagement.html, UserManagement.html,
derby-866-01-aa-sysusers.diff, derby-866-01-ab-sysusers.diff, derby-866-02-ag-createDropUser.diff,
derby-866-03-aa-resetModifyPassword.diff, derby-866-03-ab-resetModifyPassword.diff, derby-866-04-aa-fixRolesTest.diff,
derby-866-05-aa-grantRevoke.diff, derby-866-06-aa-upgradeFrom10.1.diff, derby-866-07-aa-removeSQLPassword.diff,
derby-866-08-aa-passwordHasher.diff, derby-866-08-ab-passwordHasher.diff, derby-866-08-ad-passwordHasher.diff,
derby-866-09-ad-nativeAuthenticationService.diff, derby-866-09-ae-nativeAuthenticationServiceWithTests.diff,
derby-866-10-ac-propChanging.diff, derby-866-11-aa-upgradeTest.diff, derby-866-12-ac-passwordExpiration.diff,
dummyCredentials.properties
>
>
> Proposal to enhance Derby's Built-In DDL User Management. (See proposal spec attached
to the JIRA).
> Abstract:
> This feature aims at improving the way BUILT-IN users are managed in Derby by providing
a more intuitive and familiar DDL interface. Currently (in 10.1.2.1), Built-In users can be
defined at the system and/or database level. Users created at the system level can be defined
via JVM or/and Derby system properties in the derby.properties file. Built-in users created
at the database level are defined via a call to a Derby system procedure (SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY)
which sets a database property.
> Defining a user at the system level is very convenient and practical during the development
phase (EOD) of an application - However, the user's password is not encrypted and consequently
appears in clear in the derby.properties file. Hence, for an application going into production,
whether it is embedded or not, it is preferable to create users at the database level where
the password is encrypted.
> There is no real ANSI SQL standard for managing users in SQL but by providing a more
intuitive and known interface, it will ease Built-In User management at the database level
as well as Derby's adoption.

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