Re: Comparison of crytography methods

From: Martin4 (ANON_at_frogadmin.yi.org)
Date: 04/29/03 

Date: 29 Apr 2003 06:29:45 +0200

"Paul" <luap.h@bt...> wrote:
> Are there any websites comparing ... speed of encoding etc?

Try http://www.esat.kuleuven.ac.be/~bosselae/fast.html

Very approximately, "speaking in round numbers", 20 clock cycles
per byte (on a Pentium) is typical for any of the modern block
ciphers.

Specifically, the Counterpane document "Performance Comparison
of the AES Submissions" reports these speeds: DES:43, RC5:25,
Blowfish:20, AES/Rijndael:18, RC6:16, Twofish:16. This ignores
initial key-setup delays; the exact numbers will be different
on different CPUs, and slower for compiled C code than for ASM.

> comparing different algorithms.. regards to ease of cracking

The short answer is, that all of the ones listed above are very
high quality and are safe to use (except DES, which is semi-weak).

NOTE: because of the way that disk I/O and network I/O work,
the time taken to save or transmit your encrypted data will be
much longer per byte than any of the timings given above.

Therefore, YOU WILL NOT NOTICE ANY DIFFERENCE IN SPEED when
you use them in a real-world situation on a desktop PC.

For source code, try here:
http://www.lunkwill.org/pubwiki/wiki.cgi/NewSciCryptFAQ
http://www.homeport.org/~adam/crypto/table.html
http://dmoz.org/Science/Math/Applications/Communication_Theory/
 ...then go to /Cryptography/, then /Programming_Libraries/

Relevant Pages