Compared to AES-128, AES-256 is 140% of the rounds to encrypt 200% as much data. So when implemented in hardware, AES-256 is substantially faster.
Excuse me, AES-256 has the same block size as AES-128, that is 128 bits. It's in fact slower, not faster, and in hardware it also occupies a substantially larger area.
If you are talking about Rijndael with 256-bit blocks, that's not AES and its variant with 256-bit keys would still be slower and would also occupy a substantially larger area in hardware than its counterpart with 128-bit keys.
Ruptor
--------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]
