Author
Message
European Chris
Unfictologist
Joined: 19 Jul 2005 Posts: 1264 Location: London's trendy Whitechapel
Braxis wrote:
Here's a nice little site which takes some of the donkey work out of frequency ananlysis/substitution codes:
http://cryptoclub.math.uic.edu/substitutioncipher/frequency_txt.htm
The basic rule is, in any particular language, certain letters will be used more often than others. If your piece of encrypted text is large enough, you would expect the number of times a letter is used to match that in an 'ideal' piece of text. Match the substituted letter to it's nearest equivalent and you've decoded it. Doesn't always work, thereby requiring a bit of intelligence such as jojojojo mentioned.
And obviously the longer the piece of text the better chance of this working. This is because of statisitcs.
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Posted: Wed Jun 14, 2006 1:54 pm
Mima
Decorated
Joined: 17 Feb 2005 Posts: 260
Thank you all - "The Code Book" has duly been Amazoned (they didn't have Codes and Ciphers for Kids!), and is on its way, and I am going away to use Braxis' web page to decode these myself! PPC sure has a way of taking you to those places that other games don't reach ....
Posted: Wed Jun 14, 2006 2:01 pm
Braxis
Boot
Joined: 08 May 2006 Posts: 26
European Chris wrote:
And obviously the longer the piece of text the better chance of this working. This is because of statisitcs.
Yes, these texts are a little short.
E.G the text on the gamma page reads like this when decoded properly:
Spoiler (Rollover to View):
why cryptology
cryptology is simply put the lifeblood of perplex city the academy
department of cryptology has its roots deeply entwined with civic and
economic advancement from banking to communications our modern lifestyle relies heavily on the peace of mind that cryptologic research gives to every single citizen here at the academy we don t just study cryptology we define it whatever program you participate in you will be sure to encounter the finest minds in the discipline and you will be given the tools to conduct research that was barely at the edge of imagination a mere ten years ago no other cryptological department in the world offers such a breathtaking opportunity
Whereas just substituting the most likely letter would lead you to believe that the message is:
Quote:
ycd rhdutaqafd
rhdutaqafd il liwuqd ust tce qigebqaam ag uehuqek ritd tce oromewd
meuohtwent ag rhdutaqafd col itl haatl meeuqd entyinem yitc ripir onm
eranawir omponrewent ghaw bonvinf ta rawwsnirotianl ash wamehn qigeltdqe heqiel ceopiqd an tce ueore ag winm tcot rhdutaqafir heleohrc fipel ta epehd linfqe ritixen
cehe ot tce oromewd ye man t jslt ltsmd rhdutaqafd ye megine it ycotepeh uhafhow das uohtiriuote in das yiqq be lshe ta enrasnteh tce ginelt winml in tce milriuqine onm das yiqq be fipen tce taaql ta ranmsrt heleohrc tcot yol boheqd ot tce emfe ag iwofinotian o wehe ten deohl ofa na atceh rhdutaqafiroq meuohtwent in tce yahqm aggehl lsrc o heotctovinf auuahtsnitd
Posted: Wed Jun 14, 2006 2:08 pm
duckiemonster
Unfettered
Joined: 10 Dec 2005 Posts: 554 Location: Oxford, UK
So, to kick off the idle speculation, who picked up the phone?
Posted: Wed Jun 14, 2006 2:12 pm
Last edited by duckiemonster on Wed Jun 14, 2006 2:48 pm; edited 1 time in total
cassandra
Entrenched
Joined: 25 Mar 2005 Posts: 831
hrm. Wonder what is in the mysterious Epsilon section.
We've got quite the list of potential Third Power/Academy connections now...
Posted: Wed Jun 14, 2006 2:13 pm
UKver2.0
Decorated
Joined: 09 Feb 2006 Posts: 270
European Chris wrote:
That UKVer2.0 isn't just a pretty face...oh wait.
Yep, I can copy and paste too. I used this to decrypt. Apologies to the purists who I've obviously offended by doing so, but I figured I'd get it up so the people who weren't going to decrypt it could start on the next bit of the puzzle. (You'll notice that I did spoilerize it.)
_________________Naomi: We did joke that we’d end up have to go round to your houses with shovels, drive you to the location and tell you to dig.
Andrea: Paint a little X on the ground with spray paint..
Naomi: and then you’d try to anagram 'shovels'
Posted: Wed Jun 14, 2006 2:24 pm
jbd
Decorated
Joined: 27 Jul 2004 Posts: 295
The only thing that strikes me so far is this:
Quote:
Leckworthy's analysis of the Earth-Perplex City data link
He's in the faculty of Information Theory. If he's been working on the data link he might have enough access to set up the commucations between V and the agents 1-8.
This is in reference to Kurt's earlier post about how "there seems to be a higher amount of chatter going on between Earth and Perplex City, and it can't be accounted for by normal Academy traffic":
http://thepathofleasttime.com/archives/2005/09/chatter.html
Posted: Wed Jun 14, 2006 2:27 pm
e_nygma
Decorated
Joined: 17 May 2006 Posts: 247 Location: Maryland, US
cassandra wrote:
hrm. Wonder what is in the mysterious Epsilon section.
Internal section for the students?
Posted: Wed Jun 14, 2006 2:50 pm
cronogenesis
Decorated
Joined: 02 Jun 2005 Posts: 201 Location: Notts UK
I like the quote:
Spoiler (Rollover to View):
After all, everyone is entitled to a secret; even if it's just an excessive affection for harbonnes.
Not suspicious at all. *shifty eyes*. Now if they met in the catacombs then thats something else
Eidt:
Could there be a page number code to the Epsilion section? Ive tried 4-10, E, V and 3P with no luck, but it might be worth a try
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Posted: Wed Jun 14, 2006 2:51 pm
Last edited by cronogenesis on Wed Jun 14, 2006 2:57 pm; edited 3 times in total
rlp6028
Veteran
Joined: 20 Apr 2006 Posts: 76 Location: Bryan, TX USA
Quote:
hrm. Wonder what is in the mysterious Epsilon section.
I have been trying to find a backdoor in, with little success so far...
_________________
"Give me an army of West Point graduates, I'll win a battle. Give me a handful of Texas Aggies and I'll win a war!"
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Posted: Wed Jun 14, 2006 2:54 pm
European Chris
Unfictologist
Joined: 19 Jul 2005 Posts: 1264 Location: London's trendy Whitechapel
UKver2.0 wrote:
European Chris wrote:
That UKVer2.0 isn't just a pretty face...oh wait.
Yep, I can copy and paste too. I used this to decrypt. Apologies to the purists who I've obviously offended by doing so, but I figured I'd get it up so the people who weren't going to decrypt it could start on the next bit of the puzzle. (You'll notice that I did spoilerize it.)
Oh no you misunderstand me. I was just saying you're ugly.
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Posted: Wed Jun 14, 2006 3:03 pm
ktetch
Kilroy
Joined: 28 May 2006 Posts: 2
ok, for those that want it, i've put it in a text file, for easier working than on the forums, I've alwao attached the keys I've used, where i've remembered.
Description
Alpha-delta decrypted, with some of the keys
Download
Filename
PCX acad crypto.txt
Filesize
7.27KB
Downloaded
231 Time(s)
Posted: Wed Jun 14, 2006 3:27 pm
CherokeeParkes
Decorated
Joined: 03 Nov 2005 Posts: 236 Location: Belfast, Northern Ireland
I've being using the crypto club website and finding some strange things.
One major question I have is what is a whisk array and what the yotz does it do. There has to be a reason why it's not always reliable.
Posted: Wed Jun 14, 2006 3:34 pm
perplexed
Decorated
Joined: 23 Jul 2005 Posts: 261 Location: Greater London, UK
oh fuck, i missed it. I love substitution cyphers
_________________
'take not my words as sacred, for in the Cube alone lies the power and each man must seek it for himself.' - Gyvaan
perplexed, moi? Definitely
Posted: Wed Jun 14, 2006 3:46 pm
cassandra
Entrenched
Joined: 25 Mar 2005 Posts: 831
you haven't missed it...we're in the epsilon page.
Posted: Wed Jun 14, 2006 3:53 pm
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