PLAYFAIR CIPHER MANUAL

Instead, spell out the numbers, punctuations, and any other non-alphabetic text.

Remove any characters or punctuation that are not present in the key square.

Any ‘J’ in the plaintext is replaced by ‘I’.

Since the grid can accommodate only 25 characters, there is no ‘J’ in this table.

The ‘key square’ is a 5×5 grid consisting of alphabets that helps encrypt the plain text.

The Playfair cipher encryption algorithm has two steps. We can build a ‘key square’ using this key. The key is in the form of a word which can be any sequence of 25 letters without repeats. The Playfair cypher has a key and a plaintext. We will have a look at some examples of Playfair Cipher with encryption and decryption algorithms. Playfair Cipher Encryption and Decryption Algorithm However, there are Playfair cypher programs in C and Python.

PLAYFAIR CIPHER MANUAL

Further, it’s a manual and labour-centric process that does not need any Playfair cypher calculator or decoder. Thus, the Playfair cypher cannot be recommended for business organizations.

Due to this reason, with the advancement of digital encryption and the passage of time, the Playfair cypher was no more an acceptable form of encoding messages as there was a risk of data getting into the wrong hands. However, after the invention of computers, the Playfair cypher was no longer used, as the computers can solve Playfair cyphers in a few seconds using break codes. Further, it didn’t need any special tools or equipment to encrypt or decrypt the information. The Playfair cipher was significantly popular in the World War I and II era because of its complexity level compared to the then available ciphers. By the time the enemy cryptanalysts could decrypt the information, it was useless for them. The primary use of the cipher was for protecting vital but non-critical secrets during actual combat. British Forces used it for tactical purposes during World War I and the Second Boer War, and Australians utilized it during World War II. The Playfair cipher is relatively fast and doesn’t require special equipment. Unlike single letters in a simple substitution cipher, the Playfair cipher technique encrypts digraphs or parts of letters. Invented in 1854 by Charles Wheatstone, the cipher got its name from Lord Playfair, who promoted its use.

Playfair cipher is the first and best-known digraph substitution cipher, which uses the technique of symmetry encryption. Advantages and Disadvantages of Playfair Cipher.Playfair Cipher Encryption and Decryption Algorithm.This guide explains everything about the Playfair cypher, its advantages and disadvantages, its relevance, and the Playfair encryption and decryption algorithms with examples. Playfair cypher offers data encryption and decryption to ensure data privacy. Businesses protect their data with a range of means, including access restriction, data encryption, and using multiple overlapping monitoring systems in place. With so much power at its disposal, data can cost companies significantly if it falls into the wrong hands.įor the same reason, organizations take data management very seriously. Organizations use raw data to turn it into meaningful information for making vital business decisions. Whether it’s a startup or a conglomerate, data is the most precious asset for today’s businesses.