Codes And Ciphers

#27 Baconian Cipher

#Cryptography

LECTURE #27: BACONIAN CIPHER

[BACKGROUND]
Bacon's cipher or the Baconian cipher is another method of steganography created by Francis Bacon in the year 1605. A message is concealed in the form of presenting text rather than revealing its real content.

[ENCRYPTION]
It is very easy, to encode a message, each letter of the PLAINTEXT is substituted by a set of five(5) of the letters 'A' or 'B'. The replacement is a binary encoding and is done according to the alphabet of the Baconian cipher, shown in the first picture (see attached photo):

There is also a second version of Bacon's cipher where it uses a unique code for each letter. As you can see, letters: I, J, U and V has each of its own pattern, shown in the second picture (see attached photo):

The writer/person must make use of either of the two (2) typefaces for this cipher (see the differences between the two) After preparing a false message with the same number of letters as all of the As and Bs in the real message. Two typefaces are chosen, one to represent.

This technique is used to ensure the privacy of the message as well of the sender.

[DECRYPTION]
To crack the hidden message, simply reverse the method that was applied by substitution. (***NOTE: To make the code complex, you can simply remove the spaces in between or put any symbols to confuse the decoder.***)

-Example-

Plaintexr: AVEFELLOWWELLMET

Ciphertext#1: AAAAA BAABB AABAA AABAB AABAA ABABA ABABA ABBAB BABAA BABAA AABAA ABABA ABABA ABABB AABAA BAABA

Ciphertext#2: AAAAA BABAB AABAA AABAB AABAA ABABB ABABB ABBBA BABBA BABBA AABAA ABABB ABABB ABBAA AABAA BAABB

As you can see, there are two(2) kinds of ciphertexts. As mentioned above, you can either use any of the 2 typefaces/tables to securely protect your message.

Just simply tell or hint the decoder on which table he/she will use. If not, better decode it using the 2 to make sure.

[GAME]
Let's see what you've learnt. PM us your answers! Don't answer in the comment section!

1.) AAABB AABAA ABABA AAAAA BABAA AAAAA ABBAA

2.) BAAAAAABAAAAABBAAABAABABBBABAAAAAAB

3.) AAAAB/AABAA!AABBA#ABBAB+ABBAB-AAABB

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