[RC5] DES Encryption
wooledge at kellnet.com
Fri Sep 25 22:44:10 EDT 1998
Etienne Demers-Martel (edm at chez.com) wrote:
> Would you send emails / data encrypted by a program that uses DES 1 or 2 ?
There's only one DES algorithm. "DES II" and other terms with numbers
in them simply refer to the contests sponsored by RSA Labs.
As for whether I'd consider using it -- it depends on the secrecy of the
data being ecrypted. For instance, the message I'm writing now won't be
encrypted at all. There aren't any secrets in it that I believe should
be protected, so I don't feel a need for any privacy. (Not to mention
the fact that the whole mailing list would have to somehow be given the
DES key, unless they all had DES-cracking hardware....)
In a situation where the information in the message requires privacy,
the value of the "secret" must be weighed against the knowledge that
an attacker could recover the data in a few days if they have several
thousand dollars to spend on a DES-cracking system.
In general, I'd use PGP, because it's both more secure and more widely
available for use within mail systems. Also, DES is a single-key
encryption system, rather than a public-key system like PGP is.
Public-key systems are more suited to communications between groups of
people who never actually meet.
"Daddy, why do those people have to | Greg Wooledge
use Microsoft Windows?" | wooledge at kellnet.com
"Don't stare, son; it's not polite." | http://www.kellnet.com/wooledge/
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