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 Forum index » Archive » Archive: General » Old News & Rumors
[TRAILHEAD?] Saver Corporation
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Minz
Decorated

Joined: 12 Apr 2009
Posts: 183

 		Decrypted the last message sent to the phone.

It reads :
LAST MESSAGE===================
Jan 14, 2:46pm [UNREAD]
Jared Hoit to 540-733-xxxx
===============================
Spoiler (Rollover to View):

SOUNDS GOOD SEE U HERE MON XXXX


Preliminary mail has been sent to Eric.

For those who want a deck file to load in cryptool, put this into a text file :
Spoiler (Rollover to View):
25,27,28,32,9,44,45,24,26,22,4,50,19,31,46,B,41,38,13,12,33,51,7,47,18,34,48,52,40,37,42,35,49,6,15,29,8,43,10,16,5,3,20,39,11,36,30,2,A,23,17,14,21,1


PostPosted: Mon Jan 24, 2011 6:57 pm
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BitGamer
Veteran


Joined: 04 Jan 2011
Posts: 84

 		I got the same decryption, Minz. But the cipher does not seem to work for the other messages. Anyone else getting the same problem?

PostPosted: Mon Jan 24, 2011 7:05 pm
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Minz
Decorated

Joined: 12 Apr 2009
Posts: 183

 		The other messages probably used another ordering of the cards.
I'm guessing it is something like rotate the deck by x cards or swap some cards. some simple rule that alters the deck after each message...
But i will first get some sleep before I continue looking into decrypting these messages. (1:15 AM here xD)

PostPosted: Mon Jan 24, 2011 7:18 pm
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Ir0ns
Decorated


Joined: 06 May 2010
Posts: 238
Location: Burnley, UK

 		Yep getting the same issue here

PostPosted: Mon Jan 24, 2011 7:20 pm
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stinji
Decorated

Joined: 02 Aug 2010
Posts: 270

 		could the gum and matches be a clue

PostPosted: Mon Jan 24, 2011 7:34 pm
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Minz
Decorated

Joined: 12 Apr 2009
Posts: 183

 		Got it! Will update as soon as I have finished decrypting everything.
Cryptool is your friend xD
Just use cryptools manual analysis function with the key you used for the message before. You will have to replace 53 -> A and 54 -> B before loading the newly generated key.
Ill look for a better description or a simpler algorithm to achieve the same after I finish this.

Oh and Joker-option is always to front.

PostPosted: Mon Jan 24, 2011 7:46 pm
Last edited by Minz on Mon Jan 24, 2011 7:56 pm; edited 2 times in total
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BitGamer
Veteran


Joined: 04 Jan 2011
Posts: 84

 		Thanks for the cliffhanger. How about a hint?

PostPosted: Mon Jan 24, 2011 7:50 pm
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Ir0ns
Decorated


Joined: 06 May 2010
Posts: 238
Location: Burnley, UK

 		Nice one Minz, i'm working on rotating the deck numbers in cryptool as we speak, about two thirds the way in.

PostPosted: Mon Jan 24, 2011 7:53 pm
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BitGamer
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Joined: 04 Jan 2011
Posts: 84
Quote:
You will have to replace 53 -> A and 54 -> B before loading the newly generated key.


Not sure if I understand that...

PostPosted: Mon Jan 24, 2011 8:09 pm
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Greystone
Unfettered


Joined: 02 Jan 2008
Posts: 373

 		stinji
Quote:
could the gum and matches be a clue


Yes, I get: 11, 20, 54, 1

I believe our deck is set and that these 4 other numbers are what we need for the rest of the "Solitaire" decryption.
DO NOT RESHUFFLE! Use the KEY numbers given.

Although the room number is 201 I do not believe it makes a difference.

This Deck has 54 cards and no jokers. Most decks have 52 and I have yet to look and find the 2 cards duplicated.

The card codes come from Bruce Schneier.
http://en.wikipedia.org/wiki/Bruce_Schneier
Card ciphers include:* Solitaire* Phelix * Helix


I see someone else has been reading "Cryptonomicon" Very Happy

PostPosted: Mon Jan 24, 2011 8:11 pm
Last edited by Greystone on Mon Jan 24, 2011 8:33 pm; edited 1 time in total
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Minz
Decorated

Joined: 12 Apr 2009
Posts: 183

 		@ Greystone, the deck has 52 cards and 2 jokers, namely Aj and Bj in Erics mail. Edit : Aces are 1h, 1c, 1d and 1s Wink

Ok, time for a little explanation :
I didn't figure out the rotating algorithm (yet), therefore I let Cryptool do some educated guessing based on the key for the previous respective message.
Analysis -> Symmetric encryption(classic) -> Manual Analysis -> Solitaire
Here you load the deck with which you decrypted the first message and select the joker position to go to the front.
You then take the newly calculated initial deck and replace the 53 with A and 54 with B in your textfile, sou you can load it again for the next message. Those 2 are your jokers.

And to decrypt you basically only hit generate keystream and decrypt after doing the above.

Attachment contains all decrypted + encypted + formated messages and the respective keys for your convenience.
report.txt
 Description   
 Filesize   2.26KB
    97 Time(s)

Unfortunately, this file is no longer in our archives.

PostPosted: Mon Jan 24, 2011 8:22 pm
Last edited by Minz on Mon Jan 24, 2011 8:29 pm; edited 1 time in total
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Greystone
Unfettered


Joined: 02 Jan 2008
Posts: 373

 		I correct myself looking at this odd deck.
We have cards Bj and Aj
I assume these to be Jokers but even odder I find no ACEs!!! Damn the Aces are listed as 1. Never mind.

PostPosted: Mon Jan 24, 2011 8:28 pm
Last edited by Greystone on Mon Jan 24, 2011 8:31 pm; edited 1 time in total
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Ir0ns
Decorated


Joined: 06 May 2010
Posts: 238
Location: Burnley, UK

 		Well played Minz, i was still some way behind you there Smile

Question is, now we have the info, what does that mean for Jared. Certainly looks dodgy, and do we let him know Smile

PostPosted: Mon Jan 24, 2011 8:30 pm
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Minz
Decorated

Joined: 12 Apr 2009
Posts: 183

 		Thx, I will leave the rest to you. I'm off to sleep now Wink

PostPosted: Mon Jan 24, 2011 8:50 pm
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stinji
Decorated

Joined: 02 Aug 2010
Posts: 270

 		impressive, most impressive!

PostPosted: Mon Jan 24, 2011 8:59 pm
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