Date: Fri, 01 Sep 2000 17:13:35 -0700 From: Scott Michel <scottm@CS.UCLA.EDU> To: adam@cypherspace.org Cc: freebsd-current@freebsd.org Subject: Re: MACs vs Hash fns. and collision resistance Message-ID: <4.3.2.7.0.20000901171131.00ac5b80@panther.cs.ucla.edu> In-Reply-To: <200008260147.VAA22230@r00t.besiex.org>
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You could just as easily use a CRC function, which has the nice property of having a collision rate of 2^l, where l is the length of the CRC. CRCs are also pretty low-cost to compute relative to other methods. -scooter At 09:47 PM 8/25/00 -0400, you wrote: >[I see my post made it] > >To expand briefly on my comment about collision resistance > > > - the hash function constructed from using Blowfish in CBC mode you -- > > have to be careful how you use block ciphers to construct hash > > functions -- they have quite different properties. For example > > collision resistance is not generally important for a block cipher, > > but is all-important for a hash function To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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