3 ms·
> There is no straightforward way to arrive at, say, 64 bit AES. Sure there is: zero-pad to 128, 192 or 256 bits. That'd be horribly, terribly broken, but it
by zeveb 10y ago
> There is no straightforward way to arrive at, say, 64 bit AES.
Sure there is: zero-pad to 128, 192 or 256 bits. That'd be horribly, terribly broken, but it would be 64-bit AES. Horrible, terrible 64-bit AES, but AES nonetheless.
- tptacek 10y agoI wrote "no straightforward way" in anticipation of someone coming up with some bizarre way to adapt AES to a small key size. If we all just stipulate that we understand how block ciphers work, we don't have to waste time in blind alleys like this.