[SpamCop-List] Re: Att: Paul Johnson: PGP signature in spam
glnews030922 at highspot.net
Fri Sep 17 22:14:02 EDT 2004
> I have a problem with the word hash, though. Ordinary dictionary
> explanations don't cover the sense you are using, but it seems to be
> programmer's jargon as found at
> http://dictionary.reference.com/search?q=hash%20coding ,
> not very illuminating for a layperson, but I get the idea.
A hash, in the cryptographic usage, is an algorithm that takes variable
length input data and converts it to a short, fixed length string,
unique to the input data. It's kind of like a fingerprint for a digital
document. If you get fingerprinted several times, you always generate
the same fingerprint. If you fingerprint somebody else, it is highly
unlikely they will generate a print the same as yours.
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