Title says it all really.
I'm toying with the idea of storing some disk images in "the cloud", but am concerned about the possibility of an attacker manipulating cipertext to do evil things once it's decrypted, and so I'd like a system that authenticates the ciphertext and assures me it has not been tampered with.
I understand that this will require a (small?) amount of local, non-cloud storage, which is a cost I'm prepared to pay.
I haven't been able to find any off-the-shelf packages that do this (or maybe I just don't know how to do it with existing tools). Can anyone point me in the right direction?
I will have call to read disks from Linux and Windows (seperately, ie, windows images and linux images).