What kind of access are you assuming the attacker has here? Modifying the ciphertext stored with Dropbox?
Evil Maid attacks that I've heard described before typically involved modifying (unencrypted and unauthenticated) bootloaders or kernels, rather than FDE ciphertext, although I realize that's not part of the definition of the attack.
Comments
What kind of access are you assuming the attacker has here? Modifying the ciphertext stored with Dropbox?
Evil Maid attacks that I've heard described before typically involved modifying (unencrypted and unauthenticated) bootloaders or kernels, rather than FDE ciphertext, although I realize that's not part of the definition of the attack.
Right, wouldn't it be extremely difficult to modify the ciphertext to create a meaningful change in the plaintext, such that checksums do not fail?
Just rolling back changes to previous versions might be enough to cause problems.