On Sun, 3 Dec 2006, David Johnston wrote: > > Moreover, AES-256 is 20-ish percent slower than AES-128. > 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.

AES-256 means AES with 128-bit block and 256-bit key, so AES-256 encrypts the same amount of data as AES-128. As of hardware implementation, one can use several engines in parallel, although even a single one can be faster than needed, for example, with 280 MHz there are 2e7 blocks per second, that is 320 Mbyte per second. -- Regards, ASK --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]