The total number of keys is therefore 26 x 25 x 24 x. The letter B could be represented as any of the remaining 25 letters, C could be represented as any of the remaining 24 letters, and so on until the entire cipher alphabet has been formed. General Monoalphabetic Cipher:To construct the cipher alphabet, the letter A could be represented as any of the 26 letters. The number of keys is therefore 25 x 23 x. This continues until there is only 1 letter left. Another letter could be paired with any of the remaining 23 letters. To construct the cipher alphabet, the letter A could be paired with any of the remaining 25 letters. The Kama-Sutra Cipher: This is a much stronger cipher. The Caesar Cipher: The alphabet can be shifted up to 25 places, but shifting a letter 26 places takes it back to its original position, and shifting it 27 places is the same as shifting it 1 place.
Let us look at the number of keys used in other methods of encryption. From the enemy's point of view, if they intercept the message and suspect that the pigpen cipher is being used, then they merely have to use the grid to decode the message. For example, if the sender uses the pigpen cipher to encrypt a message, then encryption is very weak because there is only 1 potential key, given by the pigpen grid. The receiver must have an Enigma machine, but must also know the key in order to decipher the message.Ī secure cipher system must have a wide range of potential keys. The key is the set-up of the machine - rotor orientations, plug selections, etc. It is definitely a cipher, because it encrypts at the level of letters and the algorithm depends on a flexible key that is chosen by the sender. To put some of the definitions into context, let's use the Enigma cipher machine (pictured above with Simon Singh) as an example. Rival groups can use the same substitution cipher, but they will choose different keys so that they can not read each other’s messages. For example, substitution is a general algorithm that is specified by a key, which is the substitution for each letter. The cipher is a general algorithm that is specified by the key. The application of multiple layers of encryption is also known as superencipherment. The key gives a cipher some built in flexibility.Įncrypt: A term that covers encoding and enciphering.Įncicode: The process of encoding a message followed by enciphering. Each cipher can be split into two halves – the algorithm and the key. To protect a message in this way is called enciphering.
#Pigpen cipher decoder code
(An alternative definition of a code is any form of encryption which has no built in flexibility.) To protect a message in this way is called encoding.Ĭipher: Any general system for hiding the meaning of a message by replacing each letter in the original message with another letter. A code has no built in flexibility, other than re-writing the codebook.
The list of replacements is contained within a so-called codebook. This short, rather boring section is supposed to clarify some of the jargon.Ĭode: A system for hiding the meaning of a message by replacing each word or phrase in the original message with another character or set of characters. When you read about cryptography (the science of secrecy), you will encounter lots of jargon, as well as different words that all seem to mean roughly the same thing.
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