home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.crypt
- Path: sparky!uunet!news.univie.ac.at!chx400!bernina!caronni
- From: caronni@nessie.cs.id.ethz.ch (Germano Caronni)
- Subject: Re: How fast is DES?
- Message-ID: <1993Jan8.144207.9539@bernina.ethz.ch>
- Sender: news@bernina.ethz.ch (USENET News System)
- Organization: Swiss Federal Institute of Technology (ETH), Zurich, CH
- References: <1ihdcmINNslg@fbi-news.Informatik.Uni-Dortmund.DE> <1494@eouk9.eoe.co.uk>
- Date: Fri, 8 Jan 1993 14:42:07 GMT
- Lines: 29
-
- In article <1494@eouk9.eoe.co.uk> ahaley@eoe.co.uk (Andrew Haley) writes:
- >: swapping and table lookup operations during multiple iterations I am
- >DES can be converted to shift/ mask/ lookup/ XOR in the inner loops.
- >No bit permutations are needed.
- look at ufc-crypt. It does this quite well...
- >: Is it possible for a software solution to reach an encryption rate
- >: of about 100kB/sec (read 100 * 1024 Byte not 100 * 1024 Bit per second)
- >: on a typical PC (say, Intel 386DX 33MHz)?
- >
- >The only thing I have seen which might be faster is Khufu. Certainly
- >IDEA (as used in PGP) isn't any faster, and if you use enough rounds
-
- Have you tried it ? (pgp -c is not a very fair test, as there are
- some tmpfiles which let me think that pgp tries compression&encryption:-) )
- On a sun 3/60 IDEA encrypts 1MB of data in 13.43 seconds.
- (78060 bytes per second) Perhaps you can compare this with you machine.
- As far as I know the sun 3/60 runs rather slow ;-))
- Or do a 'cc -DTEST idea.c -o idea' and then run 'idea' separately...
- Friendly greetings,
- gec
-
-
-
-
- --
- Instruments register only through things they're designed to register.
- Space still contains infinite unknowns.
-
- Germano Caronni caronni@nessie.cs.id.ethz.ch
-