| ▲ | Retr0id 4 hours ago | |
There are other issues with AES-CTR - an attacker can flip bits at chosen offsets in the plaintext without knowing the key. For example, if they know (or can guess/infer) what offset the relevant portion of the `sudo` binary is at, they could flip the branch instruction responsible for password checking. This can be done in one step, as opposed to the multi-step plaintext recovery attack described in the article. With XTS, the attacker is forced to completely garble a whole block at a time. | ||