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From "Kim Haase (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (DERBY-4579) Document the configurable hash authentication scheme
Date Fri, 02 Apr 2010 13:32:27 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Kim Haase reassigned DERBY-4579:

    Assignee: Kim Haase

> Document the configurable hash authentication scheme
> ----------------------------------------------------
>                 Key: DERBY-4579
>                 URL: https://issues.apache.org/jira/browse/DERBY-4579
>             Project: Derby
>          Issue Type: Improvement
>          Components: Documentation
>    Affects Versions:
>            Reporter: Knut Anders Hatlen
>            Assignee: Kim Haase
> DERBY-4483 adds the ability to configure which message digest algorithm to use to protect
the passwords that are stored in the database when using BUILTIN authentication.
> I think these changes are required:
> * Reference manual: Document the new database property derby.authentication.builtin.algorithm.
It's a dynamic property that can be set either on database level or on system level. Its value
is the name of a message digest algorithm available from one of the Java Cryptography Extension
providers registered in the JVM. Example values: MD5, SHA-256, SHA-512. The specified algorithm
will be applied on the concatenation of the user name and the password before it's stored
in the database. If the property is NULL or the empty string, the old algorithm (SHA-1 on
the password only) is applied instead.
> * Developer's guide: Mention the property in "List of user authentication properties"
> * Server and admin guide: In the table in section "Network client security", mention
that strong password substitution cannot be used to connect as a user whose password has been
stored with the new scheme. I'd suggest changing the following sentence:
>     Strong password substitution cannot be used with external Derby authentication schemes
(for example, LDAP).
> And replacing it with something like:
>     Strong password substitution can only be used with Derby's NONE and BUILTIN authentication
schemes. Also, for the BUILTIN scheme, it does not work for database-level users whose password
has been protected by a custom message digest algorithm specified by the derby.authentication.builtin.algorithm

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