RE: [MI400] Generate hash code for a source member?

[thomas@xxxxxxxxxxx]

Dan:

The point I wanted to make was that you might be perfectly happy
with a simple XFOOT of an array of 32-bit integers plus a couple
tweaks for transposed records, etc. Most likely that'll give as
much uniqueness as you'll ever need and the whole application
could be coded in a couple hours perhaps.

OTOH, if Leif is willing to give more or less direct assistance
in MI, then I say 'go for it!' That's worth the effort.

Tom Liotta

"Dan Bale" wrote

> Tom, I understand that 20 bytes of hash is never going to
absolutely
> guarantee that two generations of the same hash value mean that
the two
> source members are identical.  Still, 20 bytes = 16**20 =
> 1,208,925,819,614,629,174,706,176 --- I think those are pretty
good odds.
>
> Also, I had to re-read Bob Crother's original suggestion after
Tom clarified
> something for me.  I  misinterpreted the "Read the source
record in as an
> array of 32 bit integers."  Now I'm not sure what that really
means.  How do
> I turn a source record into an array of 32 bit integers?  Would
this be
> "better"/more unique than the CIPHER hash that Leif's MIFHASH
app will
> generate?

--
Tom Liotta
The PowerTech Group, Inc.
19426 68th Avenue South
Kent, WA 98032
Phone  253-872-7788
Fax  253-872-7904
http://www.400Security.com
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