Messages in this thread | | | Date | Fri, 16 Jan 2004 10:42:36 -0500 (EST) | From | James Morris <> | Subject | Re: PROBLEM: AES cryptoloop corruption under recent -mm kernels |
| |
On Fri, 16 Jan 2004, Mark Borgerding wrote:
> From looking through the cryptoloop code, it looks like the IV for CBC > mode is always the sector index. It seems this could be weak against > chosen plaintext attacks, as well as allowing an attacker to know which > cipher blocks started any changes between two snapshots of the > ciphertext. I discuss ECB, since I wouldn't consider using it.
Eli Biham has suggested encrypting the sector numbers, see http://people.redhat.com/jmorris/crypto/cryptoloop_eli_biham.txt
- James -- James Morris <jmorris@redhat.com>
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |