Bacon's cipher

The Bacon cipher is a returning to Francis Bacon Steganographieverfahren. Each letter of the original text is assigned a five-digit code here:

This encoding is now hidden in a text. There are several processes:

• For each letter of a text two different fonts can be used. A font stands for the letter a, the other for the letter b: " This is almost an unobtrusive message, is not it ." Francis Bacon has this, a manuscript from 21 characters developed in which there are two different forms for each uppercase and lowercase letters. This is the original form of the Bacon - Chiffre.
• Instead of different fonts to use capital letters for "a" for lowercase and "b " are used: " This is almost an unobtrusive message, Is not it? ".
• It forms a set in which the initials of the words for the letters "a" and "b" are. Start a word with the letters AM, so it stands for "a". Words that begin with NZ, are a "b". Example: "Winter at the North Pole is usually equal only at the beginning it's strange But then you get used to it full cold water and ice are the polar bear swims in the sea help is usually not available, but never give up I am. .. .. .. but it was only a kilometer away. "
• If you want to not obscure the transmission of a secret message, so can the Bacon cipher also use for encryption. Here one chooses for each "a " at random one of the letters AM, for each " b" one of the letters NZ: " SDUAG MTBAH JQCLN EZEBI AVOXK MATH BACON DKCEI ".

Analysis

If the method is known as it is easy to decipher the text. If one uses for each letter "a" or " b" is a special word, so the difficulty is to create an unobtrusive text, which does not really stand out for a striking sentence structure or unusual words.

Bacon's cipher is one of the first applications of the dual system in Europe.