sd-card permissions

ajay ummadi · 03-12-2013, 06:13 AM

Hi

My device is booting throgh Micro sd card , that contains Fat32(boot), ext2(rootfs).

whenever i will give this product into end user's they can easily open the Micro sd card & that source code can easily copy to every one,

ie my problem,

how can i over come this problem ? is there is any way to hide the code ?
note: my device is booting throgh sd -card .

My device specifactions

processor : Am1808

o/s : Linux 2.3.2

pan64 · 03-12-2013, 12:08 PM

you may try an encrypted filesystem, but I do not know what exists for that version.

ajay ummadi · 03-12-2013, 11:45 PM

Quote:

Originally Posted by pan64

you may try an encrypted filesystem, but I do not know what exists for that version.

i have a one dobut

if i encrypt my filesystem is it possible to understand linux in botting time the encrypted file

shivaa · 03-12-2013, 11:53 PM

As far as I remember, you have asked the same question earlier.

So what about changing the permission to read-only for everyone, except owner, on that sd-card? Or even you can give no read permission for anyone, except owner.. It should perhaps solve your purpose.

evo2 · 03-13-2013, 12:29 AM

It does not matter what file permissions you set, once you hand over the card, the person with control over the machine on which it is mounted will be able to read every bit.

If you are worried about users seeing source code, then don't put source code on the sdcard.

I'm not sure what you are trying to achieve, or what the real problem actually is.

Evo2.

pan64 · 03-13-2013, 01:09 AM

Quote:

Originally Posted by ajay ummadi

i have a one dobut

if i encrypt my filesystem is it possible to understand linux in botting time the encrypted file

You will need a non-encrypted boot partition and another one containing the sensitive data.