Thanks Christian,
What I am currently have for Geoserver 2.0 is re-using a Tomcat JDBCRealm
database, which has tables 'users' and 'user_roles'.
I edited geoserver's applicationSecurityContext.xml to
replace the default GeoserverUserDao bean with a JdbcDaoImpl bean.
This meant I could not use the geoserver interface to edit these
users and roles, but that was no big deal.

I don't really fancy writing my own authentication provider for
Geoserver 2.4, so I will have to rethink how to integrate
the display of geoserver services with our internal Tomcat apps, and investigate
how to pass authentication automatically as part of a request from
a java servlet, rather than let geoserver prompt for username/password.
Any pointers on this alternative?

Regards,

Chris

On 01/10/2013 09:37, Christian Mueller wrote:
Hi Chris

Not sure how your authentication schema works.

There is a JDBC connection provider
http://docs.geoserver.org/stable/en/user/security/auth/providers.html

authenticating a user  using a jdbc connect.

If you have a table with user name + md5 hash, you need to develop your own authentication provider.

You should hava a look at class
org.geoserver.security.jdbc.JDBCConnectAuthProvider
You can inject your authentication provider by creating your own community 
module. Unfortunately, until now, there is no documentation in the developers 
guide. Maybe I can assist.
Cheers
Christian



On Mon, Sep 30, 2013 at 3:28 PM, Chris Morgan <[email protected] <mailto:[email protected]>> wrote:

    Hello everyone,

    I've been away from the geoserver community for a while,
    but I am back now looking to upgrade our working Geoserver
    installation.

    We have a working geoserver V2.0 installation, which
    uses a shared JDBC database containing MD5 password hashes
    for authentication - I managed to get geoserver to recognise
    this instead of the old plain text users.properties file by manually
    editing applicationSecurityContext.xml to add new
    userDetailsService and dataSource beans.

    I would now like to use this same user database with the
    current version of Geoserver, but I see that the comprehensive
    new authentication framework has completely skipped past
    MD5 password hashing!

    Is there any way to get Geoserver V2.4 to
    use a user/group service with simple MD5 password hashes instead
    of the PBE or SHA algorithms used by default?

    Thanks,

    Chris

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