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From "Knut Anders Hatlen (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DERBY-5550) Document derby.authentication.builtin.saltLength and derby.authentication.builtin.iterations
Date Wed, 21 Dec 2011 11:01:31 GMT
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:
            Reporter: Knut Anders Hatlen

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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