the whitetail LbNA # 43341
|Placed Date||Sep 9 2008|
This clue uses a Playfair Cipher. While it takes a while to learn how the cipher works, once you get it you can encode and decode messages quite quickly. Since it is a polyalphabetic cipher (each letter in the cipher text may represent different letters in the original or plaintext), it makes decoding difficult unless you have the key.
The basis of this cipher is a grid pattern which is 4x6 (other grids such as 5x5, 3x7, 4x7 or some other combination can also be used). Letters and sometimes numbers and/or symbols are filled in the grid randomly. Thus to decode a message using the grid, you need to know the number of rows and columns and the order in which the letters were entered into the grid.
To make the grid fr the Foxhunt LB, create a grid with four rows and six columns and insert the following letters in the order in which they appear below (or copy and paste them into a word document and change the font to Courier so the letters line up)
Top Row: F O X K E Y
2ND Row: H U N T C P
3RD Row: A B W D G M
4TH Row: L Z R V I S
The letters J and Q are not used.
To encode a message using the grid write the original message in paired segments. You will then use the grid to find the cipher text letters to represent each pair of original letters.
HOW TO ENCODE MESSAGES:
Let’s practice by encoding the words CHICKEN DINNER.
First separate the message into paired segments: CH IC KE ND IN NE RX.
(If there are an uneven number of letters, as in this case, add one extra letter, called a null, to the end of the message).
Next find each pair of letters in the grid:
If both original paired letters are in the SAME ROW, write down the letters to the RIGHT of each. For the letters to the right of the last column, use the letters in the first column. Thus the first pair CH = PU. and the third pair KE = EY.
If both original paired letters are in the SAME COLUMN, write the letters BELOW each letter. Thus the second pair IC= EG and the last pair RX=XN. For the letters below the bottom row, use the letters in the top row.
If the original paired letters are in DIFFERENT ROWS AND COLUMNS, take the first letter in the pair and move left or right until you find the column which contains the second letter. Write down the letter at that intersection. Then take the second letter of the original pair and move left or right until you find the column which contains the first letter. Write down the letter at that intersection. Thus ND=TW, IN=RC etc..
The cipher text for CHICKEN DINNER would thus be
PU EG EY TW RC CX XN.
HOW TO DECODE THE CIPHER TEXT.
To decode a message, do the reverse if letters are in the same row or column, and exactly the same thing if they are in different rows or columns:
Find the pair of ciphertext letters in the grid.
If they are in the SAME ROW, write the letter to the LEFT of each.
If they are in the SAME COLUMN, write the letter ABOVE each.
If they are in DIFFERENT ROWS AND COLUMNS, take the first letter of the cipher text and move left or right until you find the column that contains the second letter. Write down the letter at that intersection. Then take the second letter of the original pair and move left or right until you find the column that contains the first letter. Write down the letter at that intersection.
To practice, decode the following message using the grid above (answer is at the end of this clue)
Cu xg cl ck hd sz sl ns kc pk
THIS BOX IS GOING TO BE A DRIVE BY BOX. VERY EASY ONCE YOU FIGURE OUT THIS CODE…
BE UK CU FC WL GK YI XU HM VS LV FB GD CL IF HL GE
CW CU CI ML VP DH ZE HW NI YS VP CF ZX BG CN WX VS
AC HD TW WV SI OC TC SZ CR NP YB KC FB OX NZ DB EM
YZ NV GC DR NP ZX CB PN CF YF NZ BM KP DF KY VZ YG
UE HU NV SM VG XI FB WW ZV IK UK NP OG KU UK BY KH
CF CL SS WH TK CF UF PZ XG VS ZA KF NU CF ZV AC T
1700 UE HU NV SM VG FI WH KC CF UZ RN VS ZA KF UN
CF ZV AC PV VG KF KH CF UF PZ KG XU ND XZ SX MA ZO
KK CF BK MI CF LY ZV XC AV FS ZZ EV UN CF LA XB XI
ZM HN HS FG IY
BE CAREFUL WITH THE FLOWERS PLEASE
YOU DO HAVE PREMISSION TO BE THERE IF ANYBODY ASKS WHAT YOUR DOING SAY KYLE SAID IT WAS OK AND EXPLAIN TO THEM YOU’RE A LETTER BOXER AND THEY WILL UNDERSTAND
ANSWER TO PRATICE CLUE: THE WHITETAIL IS PRETTY