{"id":147,"date":"2009-12-10T12:49:38","date_gmt":"2009-12-10T12:49:38","guid":{"rendered":"http:\/\/blog.soton.ac.uk\/helpdesk\/?p=147"},"modified":"2009-12-13T16:17:16","modified_gmt":"2009-12-13T16:17:16","slug":"challenge-1-complete","status":"publish","type":"post","link":"https:\/\/blog.soton.ac.uk\/helpdesk\/2009\/12\/10\/challenge-1-complete\/","title":{"rendered":"Challenge #1 Complete"},"content":{"rendered":"<p>Congratulations to:<strong> Matthew A (mca1..)<\/strong><br \/>\nwho was the first person with the right answer to Challenge #1<\/p>\n<p>Also congratulations to: &#8216;Al&#8217; G (tag1&#8230;), Clare L and friends (cl27&#8230;), Anna A (ama1&#8230;), Steve HP (shp1..), Tom O (to1&#8230;), Owen S (os1&#8230;), Peter L (pjcl1..), Paul T (pjt2&#8230;) and Rachel G (rng1&#8230;)<br \/>\nall of whom provided at the correct answer with a suitable explanation.<\/p>\n<p>A mention also to Andy D (ad10&#8230;) who came so close but sadly missed out the all-important explanation. Don&#8217;t forget!<\/p>\n<p>For the rest of you that didn&#8217;t make the cut:<\/p>\n<p>You needed to begin at the very beginning &#8211; the top of the Challenges page &#8211; where you would have seen the text &#8220;Gur rairybcr vf oruvaq gur ybbfr oevpx!&#8221;. This shows an example of a substitution cipher in use, in this case a simple alphabetic shift (Caesar cipher). One of you gave us the wrong shift size (saying 14 instead of 13), but we let you have it anyway. It&#8217;s a 13-character Caesar shift, which in computing terms is also often known as &#8220;ROT13&#8221;. ROT13 used to be a favourite on internet newsgroups to hide information from casual browsing, although its cryptographic strength is practically nil.<\/p>\n<p>Well done to everyone who got it right!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The results of the Dead Letterbox challenge, along with the solution&#8230;<\/p>\n","protected":false},"author":50,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[185],"tags":[],"class_list":["post-147","post","type-post","status-publish","format-standard","hentry","category-competitions"],"_links":{"self":[{"href":"https:\/\/blog.soton.ac.uk\/helpdesk\/wp-json\/wp\/v2\/posts\/147","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.soton.ac.uk\/helpdesk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.soton.ac.uk\/helpdesk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.soton.ac.uk\/helpdesk\/wp-json\/wp\/v2\/users\/50"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.soton.ac.uk\/helpdesk\/wp-json\/wp\/v2\/comments?post=147"}],"version-history":[{"count":4,"href":"https:\/\/blog.soton.ac.uk\/helpdesk\/wp-json\/wp\/v2\/posts\/147\/revisions"}],"predecessor-version":[{"id":155,"href":"https:\/\/blog.soton.ac.uk\/helpdesk\/wp-json\/wp\/v2\/posts\/147\/revisions\/155"}],"wp:attachment":[{"href":"https:\/\/blog.soton.ac.uk\/helpdesk\/wp-json\/wp\/v2\/media?parent=147"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.soton.ac.uk\/helpdesk\/wp-json\/wp\/v2\/categories?post=147"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.soton.ac.uk\/helpdesk\/wp-json\/wp\/v2\/tags?post=147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}