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Kryptos - The Cipher (Part 4) - Correctly positioned decryption of the word BERLIN

EASTNORTHEAST - This is not exactly the hint Jim Sanborn (JS) gave for K4 on the 29th of January this year. He only gave NORTHEAST - which refers to the positions 26-34 of K4's plaintext.  Beside BERLIN and CLOCK it is the third revealed plaintext word of K4. However, also this hint does not seem to help much.  However, it just so happened, that a member in the yahoo kryptos group had a conversation with Jim Sanborn due to a submitted solution. Sandborn's answer to the question contained again the last clue which surprisingly was EASTNORTHEAST at position 22-34. Jim Sanborns compass rose at CIA There is disagreement if Jim revealed this on purpose or he did it accidentially, but the new extended clue seem to be serious and valid.Interestingly, EASTNORTHEAST is exactly the direction which is illustrated on the compass rose on one of the stones around kryptos, also created by Jim Sanborn. Actually, i dont really kn...
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No, that is not me. That is a photo of my cute little dog named Mo. We (my wife and i) rescued him from a  killing station in Spain. I wish i had a similar good looking coat and haircut like him.

My name is Christian Schridde and i am living in Germany. I made my PhD in cryptography at the University of Marburg. Meanwhile i am for the Federal Office for Information Security.

I write this blog just for fun and my native interest in all those covered topics.




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  1. James Colmer9/11/2018 10:26:00 AM

    RFAEMUFPHZL - CWBYAHUQNBL - MIZCEALCULK - ELYOIECBAQK - BERLINCLOCK

    ReplyDelete

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Kryptos - The Cipher (Part 4) - Correctly positioned decryption of the word BERLIN

EASTNORTHEAST - This is not exactly the hint Jim Sanborn (JS) gave for K4 on the 29th of January this year. He only gave NORTHEAST - which refers to the positions 26-34 of K4's plaintext.  Beside BERLIN and CLOCK it is the third revealed plaintext word of K4. However, also this hint does not seem to help much.  However, it just so happened, that a member in the yahoo kryptos group had a conversation with Jim Sanborn due to a submitted solution. Sandborn's answer to the question contained again the last clue which surprisingly was EASTNORTHEAST at position 22-34. Jim Sanborns compass rose at CIA There is disagreement if Jim revealed this on purpose or he did it accidentially, but the new extended clue seem to be serious and valid.Interestingly, EASTNORTHEAST is exactly the direction which is illustrated on the compass rose on one of the stones around kryptos, also created by Jim Sanborn. Actually, i dont really kn...
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Kryptos - The Cipher (Part 1) - Introduction

Introduction. Since I think that KRYPTOS does not need any introduction, I will only give you a brief description of one of the most famous and only partially solved ciphers known today: KRYPTOS - Von Jim Sanborn - Jim Sanborn, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=8253447 KRYPTOS was constructed in Nov. 1990 on the ground of the CIA Headquarter in Langley, Virginia by Jim Sanborn It contains 4 ciphers (K1,K2,K3,K4) on its left side and some kind of Vigenère-Table on its right side K1, K2 and K3 were solved by James Gillogly in 1999. Afterwards, the CIA and later the NSA claimed that they had a solution to the first three ciphers at an earlier point in time Ed Scheidt, a cryptoanalyst and former director of the CIA, gave Sanborn the input of possible cryptographic techniques to use K1 is a variant of the Vigenère-Cipher (Quagmire 3) with the codewords KRYPTOS and PALIMPSES...
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Kryptos - The Cipher (Part 3) - K4 Intentional vs. non-intentional errors

This post is about is more or less a collection of several approaches and facts that has been said as well as some speculations. B-ary integer representation According to [1] during a Question and Answer round, Jim Sanborn was asked again about the hint BERLIN. The question was if N decodes to B, Y decodes to E, etc, etc. and Jim confirmed it does. Emphatically . It is written, that Jim Sanborn rattled through the entire crib: \begin{align}   \texttt{N} &\stackrel{\text{decode}}{\rightarrow} \texttt{B} \\   \texttt{Y} &\stackrel{\text{decode}}{\rightarrow}  \texttt{E} \\   \texttt{P} &\stackrel{\text{decode}}{\rightarrow}  \texttt{R} \\   \texttt{V} &\stackrel{\text{decode}}{\rightarrow}  \texttt{L} \\   \texttt{T} &\stackrel{\text{decode}}{\rightarrow}  \texttt{I} \\   \texttt{T} &\stackrel{\text{decode}}{\rightarrow}  \texttt{N} \end{align} When the same q...
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