[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Short keys * Options, combinations, and negotiations => simplicity
-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 4,MIC-CLEAR
Content-Domain: RFC822
Originator-Certificate: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MIC-Info: RSA-MD5,RSA,
BGCRKqAKblFdFAdiOHGkQjpVFQk1sz8fNSsPm283blaYvo2LgISc6e9jpnV7TnD9
RWGb+X9eW7ssl8hVb1qVFwM=
Perry Metzger writes:
> Stephen Kent writes:
> > It is worth noting that single DES is widely used to provide
> > confidentiality for a number of very substantial financial services
> > apoplications. If the cost of breaking DES is sufficiently low, then
> > organized criminals are missing a great opportunity to steal billions of
> > dollars.
>
> Its only because the mafia doesn't have the expertise in house --
> yet.
...
In all this flap I haven't heard any mention of Rivest's DESX
(see www.rsa.com/rsalabs/cryptobytes/, Volume 2, Number 2 - Summer '96 issue).
The only weakness that I have seen in the literature concerning DES comes
from exhaustive key search. Rogaway and Kilian provide a convincing
argument that DESX solves this problem, perhaps better than 3DES, with
essentially the same computational costs as DES.
Have I missed something in the literature?
Charles Watt
SecureWare/Security First Network Bank
-----END PRIVACY-ENHANCED MESSAGE-----