Hi

Can anyone comment of the security concerns of tmpfs vs ramdisk if used as scratch space to decrypt/encrypt data?

According to my understanding tmpfs should be just as safe as ramdisk as long as you limit the size to be smaller than the actual memory available. My only concern is what would happen if your memory is full and you then mount a new tmpfs. Will it be written to disk in swap space, that at least is what I understand would happen, which would not be great. But if you assign the tmpfs at boot time then there should not be any problem unless you grow beyond the intial size.

Regards