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Vigenére cipher

by chargrill (Parson)
on May 15, 2006 at 09:41 UTC ( [id://549415]=obfuscated: print w/replies, xml ) Need Help??

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  1. or download this
    #!/usr/bin/perl
    
    ...
    previous alphabet.  Incidentally, there's a good chance that this plai
    +ntext
    is long enough to display the cryptographical weakness of this particu
    +lar
    algorithm.  Can you spot it?
    
  2. or download this
    $,=42;for(34,0,-3,9,-11,11,-17,7,-5){$*.=pack'c'=>$,+=$_}for(reverse s
    +plit//=>$*
    ){$%++?$ %%2?push@C,$_,$":push@c,$_,$":(push@C,$_,$")&&push@c,$"}$C[$#
    +C]=$/;($#C
    >$#c)?($ c=\@C)&&($ C=\@c):($ c=\@c)&&($C=\@C);$%=$|;for(@$c){print$_^
    +$$C[$%++]}
    

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