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Re: Performance: MD4 vs MD5

From: Glenn A. Thompson <gthompson_at_cdr.net>
Date: 2003-04-25 20:07:39 CEST

>
>
>Your data are *extremely* old. The problem with MD4 is that it's easy
>to generate collisions, to the point where it's likely to be a practical
>concern for a repository storing a fairly large number of files. That
>trumps any performance concerns.
>
>
Hun, the check sums are stored per representation (file). Who cares if
two different files have the same check sum. I thoiught the point is to
detect if unexpected changes have occured in the storage of a specific
version of a file. i.e. has the DB/hardware stepped on our data
somewhere along the line. 'dem bits can be sitting around for a long
time between accesses:-)

gat

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Received on Fri Apr 25 20:09:38 2003

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