https://en.formulasearchengine.com/w/index.php?action=history&feed=atom&title=Non-interference_%28security%29 2026-08-16T13:57:58Z Revision history for this page on the wiki MediaWiki 1.47.0-wmf.7 https://en.formulasearchengine.com/w/index.php?title=Non-interference_(security)&diff=13774&oldid=prev 2013-03-09T01:25:42Z

<p><a href="/w/index.php?title=WP:CHECKWIKI&amp;action=edit&amp;redlink=1" class="new" title="WP:CHECKWIKI (page does not exist)">WP:CHECKWIKI</a> error fix for #61. Punctuation goes before References. Do <a href="https://en.wikipedia.org/wiki/GENFIXES" class="extiw" title="wikipedia:GENFIXES">general fixes</a> if a problem exists. - using <a href="/w/index.php?title=Testwiki:AWB&amp;action=edit&amp;redlink=1" class="new" title="Testwiki:AWB (page does not exist)">AWB</a></p> <table style="background-color: #fff; color: #202122;" data-mw-interface=""> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 03:25, 9 March 2013</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The <del style="font-weight: bold; text-decoration: none;">author </del>is <del style="font-weight: bold; text-decoration: none;">known as Irwin</del>. <del style="font-weight: bold; text-decoration: none;">He utilized </del>to be <del style="font-weight: bold; text-decoration: none;">unemployed but now he </del>is <del style="font-weight: bold; text-decoration: none;">a pc operator but his promotion </del>by <del style="font-weight: bold; text-decoration: none;">no means arrives</del>. <del style="font-weight: bold; text-decoration: none;">California is our birth place</del>. <del style="font-weight: bold; text-decoration: none;">One </del>of the <del style="font-weight: bold; text-decoration: none;">things she loves most is to do aerobics </del>and now <del style="font-weight: bold; text-decoration: none;">she is attempting to earn cash with it</del>.<del style="font-weight: bold; text-decoration: none;">&lt;br&gt;&lt;br&gt;Also visit my blog; </del>[http://<del style="font-weight: bold; text-decoration: none;">livestudentjobs</del>.<del style="font-weight: bold; text-decoration: none;">co</del>.<del style="font-weight: bold; text-decoration: none;">uk</del>/<del style="font-weight: bold; text-decoration: none;">groups</del>/<del style="font-weight: bold; text-decoration: none;">solid</del>-<del style="font-weight: bold; text-decoration: none;">advice</del>-<del style="font-weight: bold; text-decoration: none;">for</del>-<del style="font-weight: bold; text-decoration: none;">handling-a-candida/ std testing at home</del>]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">'''LCS35''' is a [[cryptography|cryptographic]] challenge and a puzzle set by [[Ron Rivest]] in 1999. </ins>The <ins style="font-weight: bold; text-decoration: none;">challenge </ins>is <ins style="font-weight: bold; text-decoration: none;">to calculate the value</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">&lt;math&gt;w=2^{2^t} \pmod n&lt;/math&gt;</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">where ''t'' is a large integer (79685186856218) and ''n'' is a 616 digit (or 2048 bit) integer which is the product of two large primes (which are not given). The value of ''w'' can then be used to decrypt the ciphertext ''z'', another 616 digit integer</ins>. <ins style="font-weight: bold; text-decoration: none;">The plaintext provides the concealed information about the factorisation of ''n'', allowing the solution </ins>to be <ins style="font-weight: bold; text-decoration: none;">easily verified.</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">The idea behind the challenge is that the only known way to find the value of ''w'' without knowing the factorisation of ''n'' </ins>is by <ins style="font-weight: bold; text-decoration: none;">''t'' successive squarings</ins>. <ins style="font-weight: bold; text-decoration: none;">The value of ''t'' was chosen to make this brute force calculation take about 35 years using 1999 chip speeds as a starting point and taking into account [[Moore's law]]</ins>. <ins style="font-weight: bold; text-decoration: none;">Rivest notes that "just as a failure </ins>of <ins style="font-weight: bold; text-decoration: none;">Moore's Law could make </ins>the <ins style="font-weight: bold; text-decoration: none;">puzzle harder than intended, a breakthrough in the art of factoring would make the puzzle easier than intended."</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">The challenge was set at (</ins>and <ins style="font-weight: bold; text-decoration: none;">takes its name from) the 35th anniversary celebrations of the MIT Laboratory for Computer Science, </ins>now <ins style="font-weight: bold; text-decoration: none;">part of [[MIT Computer Science and Artificial Intelligence Laboratory]]</ins>.</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">==External links==</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[http://<ins style="font-weight: bold; text-decoration: none;">theory</ins>.<ins style="font-weight: bold; text-decoration: none;">lcs</ins>.<ins style="font-weight: bold; text-decoration: none;">mit.edu</ins>/<ins style="font-weight: bold; text-decoration: none;">~rivest</ins>/<ins style="font-weight: bold; text-decoration: none;">lcs35</ins>-<ins style="font-weight: bold; text-decoration: none;">puzzle</ins>-<ins style="font-weight: bold; text-decoration: none;">description.txt Description of the LCS35 Time Capsule Crypto</ins>-<ins style="font-weight: bold; text-decoration: none;">Puzzle], Ronald L. Rivest</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category:Cryptography contests]</ins>]</div></td></tr> </table>

en>BG19bot https://en.formulasearchengine.com/w/index.php?title=Non-interference_(security)&diff=248407&oldid=prev 2011-01-30T16:33:07Z

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