Major Friedrich Kasiski (1805-1881) was a Prussian infantry officer who, in 1863, published "Die Geheimschriften und die Dechiffrierkunst" (German, "Secret writing and the Art of Deciphering").
Major Friedrich Kasiski (29 November 1805-22 May 1881) was a Prussian infantry officer, cryptographer and archeologist. In 1863 he published "Die Geheimschriften und die Dechiffrierkunst" (German, "Secret writing and the Art of Deciphering").