Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
People are rat-holing on the "I can make two random-data chunks which have the same MD5 hash." Sure, that's an interesting data point.

But my point is (and has been) that the complexity is far higher if you want to (1) engineer a new data stream which will match an original data stream's hash, while (2) maintaining a plausible protocol and formatting.

  • Forge a new JPEG image (same hash as the original image) which has no broken data fields.
  • Forge a new tarball which can still be decompressed.
  • Forge a new text file without using random line noise or dictionary gibberish.

If you can do that, even once, THEN I will be impressed and reconsider the value of MD5's distribution fingerprinting.

[ e d @ h a l l e y . c c ]

In reply to Re^7: On showing the weakness in the MD5 digest function and getting bitten by scalar context by halley
in thread On showing the weakness in the MD5 digest function and getting bitten by scalar context by grinder

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, 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, 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.
  • Log In?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others making s'mores by the fire in the courtyard of the Monastery: (7)
    As of 2018-05-28 10:32 GMT
    Find Nodes?
      Voting Booth?