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martin_great_boy



Joined: 27 May 2008
Posts: 23
Location: Rockville

Post about substitute teacher Reply with quote
what kind of code used?



plisss help me

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martin love A_ _ _ L
Wed Jun 18, 2008 8:50 am View user's profile Send private message Yahoo Messenger
sky



Joined: 06 Jun 2008
Posts: 17

Post Reply with quote
As the name of the challenge suggest, it uses a simple substitution cipher (http://en.wikipedia.org/wiki/Substitution_cipher)
Wed Jun 18, 2008 4:58 pm View user's profile Send private message
martin_great_boy



Joined: 27 May 2008
Posts: 23
Location: Rockville

Post Reply with quote
in substitusion simple it doesn't work,



please give me some hint...

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martin love A_ _ _ L
Thu Jun 19, 2008 12:53 am View user's profile Send private message Yahoo Messenger
Xeyes



Joined: 16 Jun 2008
Posts: 20

Post Basic Reply with quote
The basics of crypto (and by basics I mean you should have figured that out on you're own) is to know english Smile
What I mean is that there are only a few common 2 or 3 letter words therefore you could start off by replacing small words first by guessing and then bigger words
You should get something eventually Very Happy

Another key when dealing with harder encryptions (XECryption is my favorite) is remembering what are the most common used letters (and characters) and what they can be associated with (Hex, Bin, HTML...)

Hope it helps
Thu Jun 19, 2008 2:00 am View user's profile Send private message
dorahan



Joined: 27 May 2008
Posts: 105
Location: HkRkoz al KuwaiT 2019 HaCkEr 101

Post Reply with quote
PLEASEE... i don't understand at all about this challenge... so confusing... please give me an information and a clue to solve this challenge... thanks so much..

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~� dorahan �~
HkRkoz al KuwaiT 2019 HaCkEr 101
Sun Jun 22, 2008 2:09 pm View user's profile Send private message
ShmenonPie



Joined: 14 Jul 2008
Posts: 2
Location: England

Post Reply with quote
The problem with substitution is most of the methods of solving it require you to know what the substitutions for the letters are. If there were some brute force way to try all different substitutions until an answer that made sense was found...

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I got to register YEAH!
Mon Jul 28, 2008 2:55 am View user's profile Send private message MSN Messenger
m!nus



Joined: 28 Jul 2007
Posts: 202
Location: Germany

Post Re: Basic Reply with quote
Xeyes wrote:
XECryption is my favorites
hackthissite.org! Very Happy
Mon Jul 28, 2008 10:05 pm View user's profile Send private message
Xeyes



Joined: 16 Jun 2008
Posts: 20

Post :) Reply with quote
We all learn somewhere Smile
Wed Aug 06, 2008 6:09 am View user's profile Send private message
grenmajulord



Joined: 06 Aug 2008
Posts: 4

Post Reply with quote
wait which one are you talking about, is it the newsgroup cipher, if not how do you solve that one
?
Thu Aug 07, 2008 5:53 pm View user's profile Send private message
Hi!!!



Joined: 11 Aug 2008
Posts: 2

Post Reply with quote
I solved all of the cyphers so far by knowing all of the codes contain the word "answer." I then find all of the 5 letter words in the code and substitute it in (usually there is only a few). If the five letter coded word has a three letter coded word in front of it, I would guess that the word is "the" and double check it with the coded word that means "answer" to see if the "e"s match up.

Hope this gives you a big push in the right direction! Very Happy
Tue Aug 12, 2008 3:13 pm View user's profile Send private message
wannabe



Joined: 19 Dec 2008
Posts: 12

Post Reply with quote
Hi,
I wanted to ask if I need to differ between capitals or non capitals. What is the first character from "teacher", I am supposed to use?
Tue Feb 03, 2009 8:06 pm View user's profile Send private message
wannabe



Joined: 19 Dec 2008
Posts: 12

Post Reply with quote
I started writing useless programs and started to wonder more and more. A little hint from me is, just use the editor.

^^
Thu Feb 05, 2009 6:42 pm View user's profile Send private message
samuelandjw



Joined: 01 Nov 2008
Posts: 8

Post Reply with quote
I still have no idea about this challenge. I think I have tried words like 'answer', 'the', 'is', 'this' but still I cannot get the answer. Could anybody give me more hints?
Thu May 14, 2009 5:16 pm View user's profile Send private message
Karian



Joined: 09 Jan 2008
Posts: 75

Post Reply with quote
try harder.
Tue May 19, 2009 8:09 am View user's profile Send private message
wannabe



Joined: 19 Dec 2008
Posts: 12

Post Reply with quote
http://en.wikipedia.org/wiki/Substitute:
-> "Substitute means to replace one thing with another." <-

The most frequent character in the English language is the 'e' !
Tue May 19, 2009 9:55 am View user's profile Send private message
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