Rob-

The digits must decimal because some downstream code that is out of my control, requires it. :-(

I think I understand what oha is trying to tell me, but I still have a nagging doubt. Let's see if I can explain this doubt rationally, without having any evidence or support for it :-)

I like the "bucket" analogy, and I agree that a good algorithm should be able to evenly distribute among all the buckets available to it in equal density.

What I'm not so sure about is that if I remove some bits from the result, does that mean I've reduced the number of buckets and preserved the algorithms bucket-distribution-equality? For some reason I think this answer is no (remember - I have no evidence or facts to back me up here... it's just a feeling).

Also, does it matter which bits I dump? Most significant? Least significant? Random bunny-hop among all the bits?

Many thanks syphilis and oha!

-Craig

In reply to Re^2: Digest (checksum) Algorithm for 12 Decimal Digits? by cmv
in thread Digest (checksum) Algorithm for 12 Decimal Digits? by cmv

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.