> multiple encryptions Correct me if I am wrong, but isn't AES a group, like DES? If so, encrypting twice under keys of the same strength is the same as encryp

> multiple encryptions Correct me if I am wrong, but isn't AES a group, like DES? If so, encrypting twice under keys of the same strength is the same as encrypting once, with a different key. This is why, e.g., 3-DES uses encryption-decryption-encryption, under different keys.