Role based reflection security manager?

Hi,
I am trying to find out whether there is a possibility to implement a role based Security Manager to control access to reflection operations (such as checkMemberAccess() for example).
I need to implement an application where using reflection is totally forbidden, except for some very specific parts of the code. Is this possible? If yes, how should I proceed? Is there a concept of identity around the security manager? Should I use ReflectPermission? If yes how?
I have been doing some reading, but it is still not clear to me. I am looking for a general implementation procedure.
Thanks.

Jrm wrote:
Ok, fair enough regarding storing data on end user PC.
But I see a contradiction here (or I mis-read you). I understand that SecurityManagers are used for applets to restrict some of their actions. What if people are able to bypass SecurityManagers? What is the point of having them? If a .jar application is started with a SecurityManager, can an end user strip it and replace it with its own security manager (from its own code for example)?First of all, the SecurityManager is provided by the local computer, not the applet. But, the most important point is that the SecurityManager used when running third-party applet code is not trying to protect the third-party code, it is trying to protect the local computer from unknown third-party code. the user is perfectly able to disable the SecurityManager and/or give the third-party code whatever permissions it desires if they decide to trust the code. you are trying to protect your code (+which is the third-party code with respect to the user+) from the user. that is the opposite situation, and does not work.
I would be happy if I could deliver a .jar application with my customized and 'unremovable' SecurityManager. Is that possible or can one always fiddle the .jar to remove it?
Because if people can always remove it, it is a permanent open door for man-in-the-middle attacks when code is delivered to end-users, correct? Is there any way to protect .jar from tampering?As i said in my previous post, there is no way to stop this. as a software developer, i'm sure you are aware that you can find "cracked" versions of any commercial software that you are interested in (if you know where to look). what makes you think that your java program is any more "secure" than those other programs?

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Raju

Thanks !
"Terry" <[email protected]> wrote in message
news:[email protected]...
comments inline
r <[email protected]> wrote in message
news:[email protected]...
>>
Here are some more specific questions around an 'example' scenario:
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1. How does weblogic provide the facility to map the EJB deployment
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Thanks,Welcome
Raju
"Terry" <[email protected]> wrote in message
news:[email protected]...
The Principals (i.e. groups and users) from your custom realm are used
to
define application roles for the EJBs, but, as far as I am aware youcannot
use a custom implementation for the ACLs for EJBs
terry
r <[email protected]> wrote in message
news:[email protected]...
How does (or not) weblogic security tie into the EJB notion of rolebased
control ? Can we create a 'custom' security mechanism for EJB (which
basically uses the EJB facilities but extends it within the
application)
by
using custom weblogic realms ?
Thanks
Raju

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JHeadStart Security problem-error page cannot be found- role based security
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Thand you very much for your reply! Unfortunately there is a specific restriction-convention in the project I work in. I am supposed to perform role based security with my own tables and no by the jheadstart’s ones. Could you find out what is my fault with the steps I follow trying to perform the process?
To remind you my steps I paste the following again:
JHeadStart Security problem-error page cannot be found- role based security
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