Klaus Schmeh
A letter sent by some Oscar P. Schaub in the 1920s looks like it has been written in Hebrew or a similar script. However, even Hebrew experts can’t read it. Is it encrypted in a clever cipher?
Yesterday and today about 25 European cipher history experts have met at Smolenice Castle in Slovakia. It was a great event.
There are hundreds of places in the world that are worth seeing for people interested in cryptology. This is why I have created a list of cryptographic sights. I hope, my readers can help me to extend it.
A postcard from 1910 is encrypted in three different ciphers. Can a reader solve this unusual cryptogram?
In 2014 Maryland-based costume collector Sara Rivers-Cofield discovered an encrypted note in an antique silk dress. This cryptogram is unsolved to date.
Italian cryptologist Luigi Sacco left behind a text encrypted with a Fleissner grille. Paolo Bonavoglia and Bart Wenmeckers, both readers of this blog, solved it.
The Masked Man, a German serial killer, was arrested in 2011. Police couldn’t decipher his encrypted storage devices. Now he has revealed his encryption passwords.
In a British censorship manual from WW2 two pictures containing hidden messages are displayed. My readers have now found at least a part of the solutions.
Three weeks ago I blogged about an encrypted telegram that was sent from New York to Tel Aviv in 1948. This cryptogram has now been solved.
In a British censorship manual from WW2 two pictures containing hidden messages are displayed. Many have tried to find these messages, but up until now with no success.
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