Precomputation: Difference between revisions

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Many attacks on cryptosystems involve precomputation.
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[[Image:Abramowitz&Stegun.page97.agr.jpg|thumb|Part of a 20th century table of [[common logarithm]]s in the reference book [[Abramowitz and Stegun]].]]
Before the advent of computers, printed [[lookup table]]s of values were used by people to speed up hand calculations of complex functions, such as in [[trigonometric table]]s, [[Common logarithm|logarithm tables]], and [[tables of statistical density functions]]<ref>{{cite book
|editor1-last= Campbell-Kelly
|editor1-first= Martin