25-03-2018, 04:03 PM
What one finds with the majority of medieval ciphers is that they are fairly simple (and often very simple) substitution codes, regardless of whether they are substituting letters or numbers.
As with the one that only substitutes consonants for vowels, sometimes they are relatively transparent (can almost be read without converting the letters).
Even Hildegard von Bingen's cipher (the substitution part, not the glossary part) is relatively easy to figure out. If you look at the letters for a while, you notice many of them are derived from the shapes of the letters they represent, simply flipped or slightly modified in a way that is easy to memorize.
As with the one that only substitutes consonants for vowels, sometimes they are relatively transparent (can almost be read without converting the letters).
Even Hildegard von Bingen's cipher (the substitution part, not the glossary part) is relatively easy to figure out. If you look at the letters for a while, you notice many of them are derived from the shapes of the letters they represent, simply flipped or slightly modified in a way that is easy to memorize.