It's late at night, and I've just completed my first JAPH (part of my exam-revision procrastination project). Comments are most welcome, whether positive or negative! Hope you like it! 
#!/usr/bin/perl -w

@k=split//,'colin@colinhorne.co.uk';

@p=sub{$_=shift;my@r;for(split/,/){push@r,sub{my@r;$_=shift;for(/.{8}/
+g){push@r
,chr(eval"0b$_")}@r}->(sprintf('%032b',eval("0x$_")))}@r}->("291a1f1d,
+4e210d00"
.",18010b1a,4f220b17,4243274f,16080a1e");{my$buf=0;my$count=0;sub d{$b
+uf=(($buf
<<1)|($_?1:0))&255;print chr($buf)unless(++$count%8)}}sub{my$f=shift;f
+or(0..$#p
){for my$b(map{2**$_}(reverse(0..7))){local$_=(ord($k[$_%$#k])^ord($p[
+$_]))&$b;
&$f}}}->(\&d);print"\n";

[download]
(PS: I'm aware of one bug to do with padding thingies to 4 bytes width, but I don't really have time to fix it)

In reply to My first JAPH by ColinHorne

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