[jira] [Assigned] (DERBY-5550) Document derby.authentication.builtin.saltLength and derby.authentication.builtin.iterations

["Kim Haase (Assigned) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DERBY-5550?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kim Haase reassigned DERBY-5550:
--------------------------------

    Assignee: Kim Haase
    
> Document derby.authentication.builtin.saltLength and derby.authentication.builtin.iterations
> --------------------------------------------------------------------------------------------
>
>                 Key: DERBY-5550
>                 URL: https://issues.apache.org/jira/browse/DERBY-5550
>             Project: Derby
>          Issue Type: Improvement
>          Components: Documentation
>    Affects Versions: 10.9.0.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Kim Haase
>
> DERBY-5539 introduced two new properties that control how BUILTIN stores credentials:
> - derby.authentication.builtin.saltLength (default: 16)
> This property specifies the number of bytes of random salt that will be added to the credentials before hashing them. (Purpose of the property: Make it infeasible to construct rainbow tables.)
> - derby.authentication.builtin.iterations (default: 1000, minimum: 1)
> This property specifies the number of times to apply the hash function (which is specified by derby.authentication.builtin.algorithm) on the credentials. (Purpose of the property: Slow down attackers as they'll need to spend more time calculating hashes.)
> Both the properties have effect only if BUILTIN authentication is enabled and derby.authentication.builtin.algorithm has a non-null value.

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