Yes, it's probably possible to come up with a workaround that would allow us to continue using MD5 securely, much like triple DES allows us to keep using DES. Now that there's a good alternative to DES, though (namely AES), there's no reason to keep using triple DES (which is slow). There's already a good alternative to MD5, so there's no reason to kludge up a workaround.

Note that nobody ever uses double DES. That's because it is vulnerable to a meet-in-the-middle attack. Secure workarounds are hard to design.

In reply to Re^9: On showing the weakness in the MD5 digest function and getting bitten by scalar context by Anonymous Monk
in thread On showing the weakness in the MD5 digest function and getting bitten by scalar context by grinder

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.