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WHat is Rot13 text ?

From the site :About:

Stack Overflow is a programming Q & A site that's free. Free to ask questions, free to answer questions, free to read, free to index, built with plain old HTML, no fake rot13 text on the home page, no scammy google-cloaking tactics, no salespeople, no JavaScript windows dropping down in front of the answer asking for $12.95 to go away. You can register if you want to collect karma and win valuable flair that will appear next to your name, but otherwise, it's just free. And fast. Very, very fast.

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migrated from stackoverflow.com Mar 11 '10 at 15:18

This question came from our site for professional and enthusiast programmers.

2  
qvq lbh rira gel gb hfr tbbtyr svefg? –  Ether Mar 11 '10 at 15:52
2  
@ether: Tbbtyvat vf uneq, yrg'f tb fubccvat! –  fretje Mar 11 '10 at 15:54

7 Answers 7

Guvf vf na rknzcyr bs ebg13 grkg. Vg'f n purnc jnl gb boshfpngr grkg jvgubhg npghnyyl rapelcgvat vg. Gur "rapelcgvba" vf rnfvyl oebxra naq vg'f hfhnyyl cerfragrq nf n wbxr sbez bs rapelcgvba.

Fgnpx Biresybj'f nobhg cntr vf ersreevat gb gur cenpgvpr fbzr bgure fvgrf hfr bs boshfpngvat gurve nafjref fb gung lbh unir gb cnl gb frr gurz.

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+1 win! ------- –  Pëkka Mar 11 '10 at 15:30
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Hey, you missed a space... fixed that for ya ;-) –  fretje Mar 11 '10 at 15:42
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Vs guvf guernq trgf irel ybat jr znl unir gb nqq nabgure zrzr gb gur "Znal Zrzrf bs Zrgn" cntr. –  Ether Mar 11 '10 at 15:53
8  
I find that rot13 doesn't obfuscate enough, so I tend to run it twice (as I have with this sentence) to double the strength of the encryption. –  Alconja Mar 11 '10 at 22:38

It's a dig at experts-exchange.com, a much-maligned precursor to stack overflow which used to (not anymore) encrypt answers with rot13 in order to force people to sign up for a paid account. Not sure what "fake" means in that context, though.

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This is probably a reference to expert sex change, another site that does programming Q&A, but tries really hard to extract money from Google visitors before showing them the answer. I haven't personally seen this, but they probably have something on the page like "a9dkjhaf aslkdjfh asdflkajdshf" and say "click here to decrypt the answer!" This is the "fake rot-13" as mentioned above.

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1  
And I think that JavaScript window dropping down asking your for stuff was from tek-tips. –  Bratch Mar 11 '10 at 15:24
    
@Bratch: yah, equally evil. –  squillman Mar 11 '10 at 15:33
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expert sex change :D –  knittl Mar 11 '10 at 15:40

Save the following code as a Bookmark. Then select any text you want to convert to/convert back from ROT13 and click on this bookmark.

javascript:var%20coding%20=%20"abcdefghijklmnopqrstuvwxyzabcdefghijklmABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLM";%20function%20rot13(t)%20{%20for%20(var%20r%20=%20"",i=0;i<t.length;i++)%20{%20character%20=%20t.charAt(i);%20position%20=%20coding.indexOf(character);%20if%20(position%20>%20-1)%20character%20=%20coding.charAt(position%20+%2013);%20r%20+=%20character;%20}%20return%20r;%20}%20S=window.getSelection();%20function%20t(N)%20{%20return%20N.nodeType%20==%20N.TEXT_NODE;%20}%20function%20r(N)%20{%20if%20(t(N))%20N.data%20=%20rot13(N.data);%20}%20for%20(j=0;j<S.rangeCount;++j)%20{%20var%20g=S.getRangeAt(j),%20e=g.startContainer,%20f=g.endContainer,%20E=g.startOffset,%20F=g.endOffset,%20m=(e==f);%20if(!m||!t(e))%20{%20/*%20rot13%20each%20text%20node%20between%20e%20and%20f,%20not%20including%20e%20and%20f.%20*/%20q=document.createTreeWalker(g.commonAncestorContainer,%20NodeFilter.SHOW_ELEMENT%20|%20NodeFilter.SHOW_TEXT,%20null,%20false);%20q.currentNode=e;%20for(N=q.nextNode();%20N%20&&%20N%20!=%20f;%20N%20=%20q.nextNode())%20r(N);%20}%20if%20(t(f))%20f.splitText(F);%20if%20(!m)%20r(f);%20if%20(t(e))%20{%20r(k=e.splitText(E));%20if(m)f=k;%20e=k;}%20if%20(t(f))%20g.setEnd(f,f.data.length);%20}%20void%200
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I believe it is a thinly-veiled reference to expert sex change.

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I believe you would be interested in reading http://en.wikipedia.org/wiki/ROT13

H͚̥̠̲̺̠ͨ͌͞E̠͎̭̳ͪ͑ͬ̈́̔ͣ́ ̡̧̦̪̣̤̘͓͍͔̤ͭ͛ͩͮ͊ͣ͌C̴̮̞͔̘͎͊̅̾Ǫ̛̞̲͓̮͈̲̩̩̘̓͑̑̏ͩͥ͆̐M̵̎ͩ̾̉̀̈́̃ͭ́͏̤̲̙È̷͕̞̩̹̹̰͋̂̾̚S̵̢̛̩̫͈̓ͫ̓̌̚

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You can translate rot13'd text by running it through this simple perl one-liner (reads from stdin - either a file or input from the console):

perl -wlpe'tr/a-zA-Z/n-za-mN-ZA-M/'

Jr znl unir gb nqq fbzrguvat gb gur "Znal Zrzrf bs Zrgn" cntr vs guvf guernq tbrf penml!

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2  
V svaq ebg13.pbz urycshy. –  Dominic Rodger Mar 11 '10 at 16:01
    
uru, V unq ab vqrn gung rkvfgrq! –  Ether Mar 11 '10 at 17:13
    
Vg'f gur jnl sbe ynml crbcyr (yvxr zr). –  mmyers Mar 11 '10 at 17:48
    
I use rot13.com on computers where I don't have the LeetKey FF addon. @DominicRodger –  TRiG is Timothy Richard Green Dec 2 '13 at 20:31

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