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Lloyd Dupont - 16 Nov 2003 07:22 GMT

what's the difference between DES, RC2, Rijndael, TripleDES ?
For my application I choosed DES on the basis on speed.
if anyone else could give me other clues ?

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Eugene Mayevski - 16 Nov 2003 15:12 GMT

> what's the difference between DES, RC2, Rijndael, TripleDES ?
> For my application I choosed DES on the basis on speed.
> if anyone else could give me other clues ?

Its' the weakest for today. Rijndael is the strongest of chosen four,
but if possible, I would recommend you Blowfish or Twofish. If you want
true security.

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Eugene Mayevski
EldoS Corp., CTO
Networking and security solutions, custom development services
http://www.eldos.com

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Lloyd Dupont - 16 Nov 2003 21:30 GMT

yep, after some thinking I use RC2 as DES didn't inspire me any trust
(Rinjdael is the slowest by 30%). in fact I could change Algorithm with but
one line, so it's not too much an issue.
I dropped Blowfish as, even if it is the fastest, you have to pay for
commercial application and I'm writting, in my spare time, what I hope to be
a mass market (commercial) application, but I certainly don't have the money
to pay ... (yet, but later it would be too late)

> > what's the difference between DES, RC2, Rijndael, TripleDES ?
> > For my application I choosed DES on the basis on speed.
[quoted text clipped - 3 lines]
> but if possible, I would recommend you Blowfish or Twofish. If you want
> true security.

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Michael Giagnocavo [MVP] - 17 Nov 2003 02:47 GMT

Search the web for a RijndaelCryptoServiceProvider. Rijndael is quite fast,
it's just that it's the only fully managed crypto algorithm (the others call
the CSPs). I heard that the CSP implementation is about 6 times faster. Of
course, this means that your users have to have the CSP installed.

-mike
MVP

> yep, after some thinking I use RC2 as DES didn't inspire me any trust
> (Rinjdael is the slowest by 30%). in fact I could change Algorithm with but
[quoted text clipped - 11 lines]
> > but if possible, I would recommend you Blowfish or Twofish. If you want
> > true security.

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