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Kryptos

Written By: Tom on November 30, 2010 8 Comments

I recently read an article about Kryptos, the sculpture at the CIA that contains several codes. It seems that all but one code has been solved. The first 2 codes were based on a Keyed Vigenere Cipher and the 3rd was a column transformation cipher. The 4th code hasn’t been cracked yet. It is the shortest at 97 characters. Just a few weeks ago, the sculptor, Jim Sanborn, released a clue to the 4th code. He said that the letters NYPVTT translate into BERLIN. I assume that it is a direct letter for letter match and not something else that represents Berlin because it is 6 characters long like the cipher text. Wondering if the 4th puzzle is another Keyed Vigenere but with a longer key than part 1 and part 2, I’ve figured out several possible keys using the alphabet key ‘KRYPTOS’. I hope this helps someone : )

Ciphertext:

OBKR
UOXOGHULBSOLIFBBWFLRVQQPRNGKSSO
TWTQSJQSSEKZZWATJKLUDIAWINFBNYP
VTTMZFPKWGDKZXTJCDIGKUHUAUEKCAR
Possible Keys:
Each line represents a possible key where ‘X’s are the unknown characters in the key.
elyoieX
elyoieXXX
elyoieXXXXXXXXXXXXXXX
elyoieXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
eXXXXXXXXXXXelyoi
eXXXXXXXXXXXXXXXXXXXXXXXXXXXXelyoi
ieXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXelyo
oieXXXXXXXXXXXXXXXXely
yoieXXXXXXXel
lyoieXXe
XelyoieXXXXXXXXXXXXXXXXXXXXXXXX
XXelyoieXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXelyoieX
XXXXelyoieXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXelyoieXXXXXXXXXXXXXXXXXX
XXXXXXelyoieXXXXXXX
XXXXXXXelyoieX
XXXXXXXXelyoieXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXelyoieXXX
XXXXXXXXXXelyoieXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXelyoieXXXXXXXXX
XXXXXXXXXXXXelyoieXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXelyoieXXXXXX
XXXXXXXXXXXXXXelyoieXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXelyoieXXX
XXXXXXXXXXXXXXXXelyoieXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXelyoie
I used this Rumkin Tool to test my keys on the cipher text. Remember to use the Alphabet Key KRYPTOS like the first two Vigenere Ciphers.
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