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Code Breaker Contest 12

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Pillar of the Community
Canada
686 Posts
 Posted 09/21/2012  5:45 pm  Show Profile   Bookmark this reply Add jg86 to your friends list Get a Link to this Reply
Yes
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jlgaudlitz95's Avatar
United States
280 Posts
 Posted 09/21/2012  8:09 pm  Show Profile   Bookmark this reply Add jlgaudlitz95 to your friends list Get a Link to this Reply
What type of lettuce was that? Also, was the quote recent, or is it from a long time ago?
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 Posted 09/21/2012  8:52 pm  Show Profile   Bookmark this reply Add jg86 to your friends list Get a Link to this Reply
It was Romaine lettuce. I don't know when the quote was said. The quoter is alive, so I'll say some time within the last 100 years!
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nod2003's Avatar
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3294 Posts
 Posted 09/21/2012  9:10 pm  Show Profile   Bookmark this reply Add nod2003 to your friends list Get a Link to this Reply
are all letters in the code directly used in the decoded message?
Pillar of the Community
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 Posted 09/21/2012  9:19 pm  Show Profile   Bookmark this reply Add jg86 to your friends list Get a Link to this Reply
yes
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nod2003's Avatar
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 Posted 09/21/2012  9:29 pm  Show Profile   Bookmark this reply Add nod2003 to your friends list Get a Link to this Reply
Trixy. It is too short for a decent letter frequency analysis, and it is more then just a simple ceaser shift. I'm going to have to give this one a bit more thought.
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 Posted 09/21/2012  9:31 pm  Show Profile   Bookmark this reply Add jg86 to your friends list Get a Link to this Reply
nod - sounds like you're on the right track. Remember Hint #4 though.
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jlgaudlitz95's Avatar
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280 Posts
 Posted 09/21/2012  10:51 pm  Show Profile   Bookmark this reply Add jlgaudlitz95 to your friends list Get a Link to this Reply
Man, I just can't figure this one out...
Edited by jlgaudlitz95
09/21/2012 10:53 pm
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Left's Avatar
United States
240 Posts
 Posted 09/21/2012  11:25 pm  Show Profile   Bookmark this reply Add Left to your friends list Get a Link to this Reply
Hint 2: N=Y?
Hint 2-3: Lettuice backwards?
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nod2003's Avatar
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3294 Posts
 Posted 09/21/2012  11:50 pm  Show Profile   Bookmark this reply Add nod2003 to your friends list Get a Link to this Reply
Will a P in the early part of the code translate to the same letter as the P in the later part of the code?
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 Posted 09/22/2012  07:06 am  Show Profile   Bookmark this reply Add jg86 to your friends list Get a Link to this Reply
nod - it could, but unlikely.
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Moe145's Avatar
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8904 Posts
 Posted 09/22/2012  11:54 am  Show Profile   Bookmark this reply Add Moe145 to your friends list Get a Link to this Reply
A Caesar cipher is one of the simplest (and easiest cracked) encryption methods. It is a Substitution Cipher that involves replacing each letter of the secret message with a different letter of the alphabet which is a fixed number of positions further in the alphabet.

Because each letter in the message has a direct translation to another letter, frequency analysis can be used to decipher the message. For example, the letter E is the most commonly used letter in the English language. Thus, if the most common letter in a secret message is K, it is likely that K represents E. Additionally, common word endings such as ING, LY, and ES also give clues.

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Moe145's Avatar
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 Posted 09/22/2012  11:57 am  Show Profile   Bookmark this reply Add Moe145 to your friends list Get a Link to this Reply
BUT!! Hint #4 shows that the encoding mechanism (?) is reversed or takes a "U-turn".


I tried analysing the code reversed and still got nothing.

So... maybe once the letter has been used, the encoding mechanism shifts so the encoded letter is almost never repeated (a random 1/26 chance of a repeat).


I'm slogging away at this one!
Edited by Moe145
09/22/2012 11:58 am
Pillar of the Community
Canada
686 Posts
 Posted 09/22/2012  1:42 pm  Show Profile   Bookmark this reply Add jg86 to your friends list Get a Link to this Reply
Left was closest with the U-turn reference.

Hint #5: It is a Caesar shift of sorts, but not every letter is shifted the same amount.

Also, I've decided the prize will be a Canadian 1936 Dot Quarter. Not sure who's familiar with the coin here, but it is a desirable date. The one I am awarding is in about VG shape. Unless lars wins, in which case the prize is a golf ball, lol.
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nod2003's Avatar
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3294 Posts
 Posted 09/22/2012  4:41 pm  Show Profile   Bookmark this reply Add nod2003 to your friends list Get a Link to this Reply
does P decode into the letter E?
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