GPT-6 Astra Solves a WWI German Radio Cipher

In one line

Scienceblogs.de, a German science blogging portal, includes a relatively famous list of 50 unsolved ciphers, which range from cryptograms published by serial killers to the famous Voynich manuscript.

Opening excerpt

Among these ciphers is a set of German radio messages from World War I that were encoded using the ADFGVX method.

This method is illustrated by the following example using the word “HOUSE” as the key:

A D F G V X A H O U S E A D B C D F G I F J K L M N P G Q R T V W X V Y Z 0 1 2 3 X 4 5 6 7 8 9 As you can see, ADFGVX is used both horizontally and vertically to give each “cell” in the table a value. For example, in this text, “AA” corresponds to the letter H, “AD” corresponds to the letter O, “DA” corresponds to the letter B, and so on. And so, the word “PRINZ” would be encoded as:

Using an encryption word other than “HOUSE” would result in a completely different table.

(Excerpted from the original; full article via the source link below.)

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