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Seven Chinese goldbars from the 1930s bear encrypted inscriptions that have never been deciphered. The provenance of these goldbars is a mystery, too.
Today, I’m starting a new series on Klausis Krypto Kolumne. I’m going to present the 50 most important unsolved cryptograms. Number 50 is the Cylob cryptogram, a truly mysterious book.
The Top 50 unsolved encrypted messages The following list is a compilation of the 50 most important unsolved cryptograms. 50. Cylob cryptogram Number 50 is the Cylob cryptogram, a truly mysterious book. 49. The Chinese goldbar cryptogram Seven Chinese goldbars from the 1930s bear encrypted inscriptions that have never been deciphered. The provenance…
Two researchers have introduced new techniques for breaking Enigma messages. Using these techniques they have deciphered hitherto unsolved Enigma cryptograms from World War II.
Charles Dellschau (1830-1923) was a US outsider artist, who left behind fascinating paintings. Some of these contain encrypted texts.
Within a few hours, blog reader Norbert Bierman solved the Reihenschieber challenge I introduced last Monday. His work shows that I used this device in a wrong way.
The Reihenschieber was a simple encryption device used by the Germans in the Cold War. I built a model of it with Lego bricks. Can you solve an encrypted text I produced with it?
Last week I introduced a cryptogram made with a Fleissner grille. Blog reader Armin Krauß found the solution, although I had made a serious mistake in the encryption process.
The Fleissner grille is one of the most popular encryption tools. In spite of its popularity, surprisingly little has been published about deciphering a Fleissner grille. I wonder if a reader can break the Fleissner challenge I am going to present today.
A German spy captured in the UK in World War II used a cipher that would hide a message in a love letter. Did this method work well in practice?
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