Francis Bacon created this method of hiding one message within another.
It is not a true cipher, but just a way to conceal your secret text within
plain sight. The way it originally worked is that the writer would use two
different typefaces. One would be the "A" typeface and the other would be
"B". Your message would be written with the two fonts intermingled, thus
hiding your message within a perfectly normal text.
There are two versions. The first uses the same code for I and J, plus
the same code for U and V. The second uses distict codes for every
For example, let's take the message "Test It" and encode it with the
distinct codes for each letter. You get a result like "BAABBAABAABAABABAABB
ABAAABAABB". The original message is 6 characters long so the encoded
version is 6 * 5 = 30 characters. If I were to find a 30-character message
and put in "B" letters as bold and italics, we will get "This is a test message with bold for "B".".
When decoding, it will use "0", "A", and "a" as an "A"; "1", "B", and "b"
are all equivalent as well. Other letters are ignored.
This is your encoded or decoded text: