Brute Force DES

[Perry E. Metzger]

"Peter Trei" writes:
> The fastest general purpose, freely available des implementation I'm
> aware of is libdes. by Eric Young. With this, I can do a set_key in 
> 15.8 us, and an ecb_encrypt in 95 us/block. That adds up to 
> about 9,000 keytests/sec (this is on a 90 MHz P5, running NT).

I'll point out that like most DES implementations, Eric's tries to
spend a lot of time in key setup to save time later on in
encryption/decryption. This tradeoff would probably be very different
if you didn't plan on trying more than one or two blocks of decryption
after getting a key.

Perry