On Sat, 2002-06-29 at 06:15, Manfred Schuler wrote:
> one reason for software write protection is that people using flash/hard
> disk at the moment have no other possibilities. And even if it is not
> perfect, it is better than nothing.
Manfred,
There are alternatives to software write-protect. Current generation
flash disks are capable of hardware write-protect. They use two
different approaches:
* Custom ATA controllers on the IDE compatible flash disk.
ATA-Disk Module
http://www.sst.com/products/58sm_lm.html
ATA-Disk Chip Application Notes
http://www.sst.com/superflash/pdf/222.pdf
ATA-Disk Module Product Brief
http://www.sst.com/ata_disk/admbrief.pdf
ATA-Disk Module (Apacer)
http://www.apacer.com/product/flash/index_adc_adm.html
* A software and hardware combination that changes the write state
of the flash disk in hardware.
Secure Disk on Module (SDOM)
http://www.pqi.com.tw/eng/ourproduct/sdom.htm
> If you set the system up in a way, that you cannot execute the files you
> can write and you cannot write the file you can execute, an intruder can
> only work with the programs available on the system (if there is no tool
> on the system to change the protection setup)
>
> Have a look at my earlier post on the devel list:
> http://sourceforge.net/mailarchive/forum.php?thread_id=790382&forum_id=5484
Charles explains the weaknesses of software write-protect in this post.
[Leaf-devel] Software write-protect
http://www.mail-archive.com/[email protected]/msg04302.html
--
Mike Noyes <[EMAIL PROTECTED]>
http://sourceforge.net/users/mhnoyes/
http://leaf-project.org/
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