secure recipe storage with labview

[mfell]

Hello

Is there a secure way of storing recipe data with Labview?  I have been charged with developing an HMI for a small chemical company using Labview and the DSC module.  The end user would like the recipes (flowrate and temperature setpoints) to be configurable by either a supervisor, engineer, or programmer but not by a standard operator or a guest.  If security and tracibility was not an issue, I would save the data  to a text or spreadsheet file.  I'm aware that the DSC module has the Citadel database, but can it be used to store recipes or can it only be used for data logging (which is why the DSC module was purchased).

Thanks,

Mark

[Odd_Modem]

It depends on the level of security you need. You might simply change the file extension of the recipe file so it cannot be opened with a double click. Another option is to save the recipe as a LabVIEW datalog file. If the run time parameters can be expressed as all floating point numbers you can define a cluster that stores these, and then save the cluster as a datalog. That should be fairly impervious to the casual hacker.

[F._Schubert]

You can encrypt it using blowfish, here is an implementation

http://zone.ni.com/devzone/cda/epd/p/id/3473
Felix