Overview

This book contains Amadi's volumes 4 to 10 fully translated. The fourth volume is called apo-cryptography and contains the most sophisticated ciphers, including the ciphers that Amadi invented. The fifth volume on invisible ciphers discusses the chemicals to use on letters, paper and seals and how to tamper with secret letters in general using gall, vitriol, wax, Arabic gum, or other things and methods. The sixth volume contains a Latin table of contents, and a sample of that text is included. Volume 8 shows 76 separate ciphers without any other information and volume 7 shows the plain text solution of them together with a hint for the solution. Volume 10 has 25 separate other ciphers without any information but in volume 9 the plain text solution together with a hint is given. In the appendices all these unsolved ciphers are presented with a explanation of the method and solution. This unique manuscript is full of authentic material that was hidden for more than 400 years, and it contains many ciphers that have never been published before.

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