Please help me decipher this.

jiml8 · 09-16-2009, 12:36 AM

Quote:

Originally Posted by estabroo

I'm truy sorry but I just couldn't resist

Code:

HAI
CAN HAS STDIO?
I HAS A MESS ITZ "Doogsauumauipnt >)! Zov qatsfd!ovr!ieipt!fjlues >) Wiau brf zovr!tirfe!fbvprjtf uedhoidam copkt? Pmebsf jndlvdf bt!lfatt!ooe!spfuwbrf fnhioefrjnh copk- uhf ptiess!cbn!bf xhbtfvfr- j.f.- qhzsjct,!mbti,!euc/"
I HAS A NUM ITZ 0
I HAS A TMP

IM IN YR DECODE TIL NUM IZ 206
    LOL TMP R NUM IN MAH MESS
    BOTH SAEM TMP AN " ", O RLY?
        NO WAI
            NERFZ TMP!!
    OIC
    LOL NUM IN MAH MESS R TMP
    UPZ NUM!!2
IM OUTTA YR DECODE

VISIBLE MESS

KTHXBYE

I presume this is lolcode?

icecubeflower · 09-16-2009, 03:57 AM

Did somebody give evil that encrypted line at a job interview? That's messed up. Or maybe it was in the Craigslist want ads?

Once I wrote a program that would solve the zodiac cryptogram by substituting the symbols with every possible combination of letters (which was pretty dumb because if it was just substitution there would have been double symbols for "l" and somebody would have solved it already). And when I was almost done I realized that since the number of permutations was N! that the universe would collapse before my program ever tried them all. And that was before it even took the time to scan for keywords.

Next time I try something like that I'm going to research it first instead of wasting an entire weekend.

estabroo · 09-16-2009, 08:17 AM

Jiml8,

yeah that was lolcode

GrapefruiTgirl · 09-16-2009, 02:36 PM

Credit** goes to both "David The H." and "HKo" for helping me improve this silly thing, producing a much simplified version, and without a bunch of convoluted crap that was actually doing nothing!

Click here to see old version.

Code:

#!/bin/bash

data="Doogsauumauipnt >)! Zov qatsfd!ovr!ieipt!fjlues >) Wiau brf zovr!tirfe!fb"
data="${data}vprjtf uedhoidam copkt? Pmebsf jndlvdf bt!lfatt!ooe!spfuwbrf fnhio"
data="${data}efrjnh copk- uhf ptiess!cbn!bf xhbtfvfr- j.f.- qhzsjct,!mbti,!euc/"

leng=${#data}

while [[ $inc -le $leng ]]; do
 charval=$(($(printf %d "'${data:$((inc)):1}")-1))
 [ $charval == 31 ] && echo -n " " || printf "\\$(printf "%03o" $charval)"
 echo -n "${data:$((inc+1)):1}"
 inc=$((inc+2))
done
echo

** Sorry guys, for having happily squandered your much appreciated help, on this silly thing

Sasha

PS - I'm still researching Emacs Lisp.

ntubski · 09-16-2009, 05:02 PM

Quote:

Originally Posted by GrapefruiTgirl

Hmm.. Where's that Lisp script

Here are 2 Common Lisp versions:

Code:

;; imperative loop

(loop with text =
     (concatenate 'string
                  "Doogsauumauipnt >)! Zov qatsfd!ovr!ieipt!fjlues >) Wiau brf "
                  "zovr!tirfe!fbvprjtf uedhoidam copkt? Pmebsf jndlvdf"
                  " bt!lfatt!ooe!spfuwbrf fnhioefrjnh copk- uhf ptiess"
                  "!cbn!bf xhbtfvfr- j.f.- qhzsjct,!mbti,!euc/")
     for i from 0 upto (1- (length text)) by 2
     as ascii = (char-code (char text i))
     when (> ascii 32)
     do (setf (char text i) (code-char (1- ascii)))
     finally (return text))

;; functional

(map 'string (lambda (c i) (code-char (max 32 (- (char-code c) i))))
     (concatenate 'string
                  "Doogsauumauipnt >)! Zov qatsfd!ovr!ieipt!fjlues >) Wiau brf "
                  "zovr!tirfe!fbvprjtf uedhoidam copkt? Pmebsf jndlvdf"
                  " bt!lfatt!ooe!spfuwbrf fnhioefrjnh copk- uhf ptiess"
                  "!cbn!bf xhbtfvfr- j.f.- qhzsjct,!mbti,!euc/")
     '#1=(1 0 . #1#)) ; circular list (1 0 1 0 1 0 ...)

Should be easier in Emacs Lisp since characters are the same as integers there.

GrapefruiTgirl · 09-16-2009, 05:15 PM

Thanks for that contribution, ntubski

IMHO, the second example you provided reaffirms (to me anyway) that Lisp appears to really be well suited to such a task: there's almost NO CODE involved there! Cool

Sasha

linuxraja · 09-16-2009, 09:14 PM

A silly prank?

GrapefruiTgirl · 09-16-2009, 09:26 PM

Quote:

Originally Posted by linuxraja

A silly prank?

No, apparently part of a job application

Sasha

brianL · 09-17-2009, 09:36 AM

This is the only Lisp I know:
"Stwike him, Centuwion, stwike him vewy wuffly!"

XavierP · 09-17-2009, 10:41 AM

And thwow him to the gwound!

jiml8 · 09-17-2009, 10:49 AM

Well, everyone is familiar with the famous quote of Horace Greeley: "Go West, young man!"

It is a little known fact that he had a harelip, and no one ever finishes the quote: "But wetuwn to my woom this evening"

gnashley · 09-17-2009, 11:33 AM

Thanks Sasha for the pure bash version!

Hko · 09-17-2009, 12:03 PM

I felt a filter-like program in the unix tradition for this was desperately needed. So a program that reads the garbled text from stdin and outputs the de-garbled text to its stdout.

This way, we won't need to change the source/script and no need to recompile when the next job application of this kind turns up on the net. And, arguably more importantly, the ugly garbled text doesn't clutter the source/script. Everything for more readable code!

So, here's my C implementation of a program that reads the garbled text from its stdin:

Code:

main(){char i=0,_;while((_=getchar())>0)putchar((i=_-33?!i:1)?--_:_);}

Example shell session:

Code:

bash$ ls
garbled.txt  wiau.c

bash$ cat garbled.txt 
Doogsauumauipnt >)! Zov qatsfd!ovr!ieipt!fjlues >) Wiau brf zovr!tirfe!fbvprjtf uedhoidam copkt? Pmebsf jndlvdf bt!lfatt!ooe!spfuwbrf fnhioefrjnh copk-uhf ptiess!cbn!bf xhbtfvfr- j.f.- qhzsjct,!mbti,!euc/

bash$ cat wiau.c 
main(){char i=0,_;while((_=getchar())>0)putchar((i=_-33?!i:1)?--_:_);}

bash$ make wiau
cc     wiau.c   -o wiau

bash$ ./wiau <garbled.txt 
Congratulations =)  You passed our idiot filter =)What are your three favorite technical books?Please include at least one software engineering book,ugfpsidsr can be whatever, i.e., physics, math, etc.

tredegar · 09-17-2009, 12:42 PM

Quote:

I felt a filter-like program in the unix tradition for this was desperately needed...

I like it!!
[Edit] You should also get double-points for "impenetrable C coding" ! [/Edit]

I don't wish to appear "picky" but something is not quite right:

Code:

tred@vaio:~$ ./wiau <garbled.txt
Congratulations =)  You passed our idiot filter =)What are your three favorite technical books?
Please include at least one software engineering book,ugfpsidsr can be whatever, i.e., physics, math, etc.
        tred@vaio:~$
tred@vaio:~$

(Extra linebreak added by me, so it fits better into the CODE window)

estabroo's LOLCODE made me laugh till I cried. Thanks for that!

Hko · 09-17-2009, 01:18 PM

Quote:

Originally Posted by tredegar

I like it!!
[Edit] You should also get double-points for "impenetrable C coding" ! [/Edit]

Thank you!

Quote:

Originally Posted by tredegar

I don't wish to appear "picky" but something is not quite right:

Code:

tred@vaio:~$ ./wiau <garbled.txt
Congratulations =)  You passed our idiot filter =)What are your three favorite technical books?
Please include at least one software engineering book,ugfpsidsr can be whatever, i.e., physics, math, etc.
        tred@vaio:~$
tred@vaio:~$

Ouch!

That has nothing to do with being picky: that's a bug!
I did not notice it myself.

What I did see was that at a few places (e.g. after the question mark) there appear unprintable chars (0x1f after the quesion mark). But I'd argue that that's bug in the specification of the cipher