21 янв. 2015 г. · Basically it starts with a random key (assuming it's the best one) and decrypts the cipher. The resulting clear text is scored using a fitness function.

25 мая 2016 г. · I would like to know how to find the keyword of the Playfair cipher, given some ciphertext and the corresponding plaintext.

21 мар. 2021 г. · For shorter ciphertexts, try to chain common digraphs together in the text to form words and guess less common digraphs. For Playfair note that ...

18 дек. 2020 г. · How does cryptanalysis of the Playfair cipher work? 5 · How to find the keyword of the Playfair cipher, given the plaintext and the ciphertext?

12 июл. 2011 г. · It's a quite a weak cipher, being better than a simple substitution cipher by only using digraphs instead of monographs.

9 окт. 2016 г. · I tried to solve this myself and got the plaintext WELCHOQLHNLRBHED , which is clearly wrong. What methods can I use to decode this message?

27 июл. 2015 г. · Specifically, although the combination of Playfair and Vigenère does reduce the frequency of repeated sequences, it doesn't get rid of them. So ...

3 нояб. 2017 г. · The Playfair key matrix contains a permutation of the 25-letter cipher alphabet. The total number of such permutations is 25!

15 февр. 2021 г. · Playfair key grids are often generated by filling in the letters of a key phrase, then completing the grid with the remaining unused letters ...

How does cryptanalysis of the Playfair cipher work? I have a set of Playfair-enciphered data that I'm trying to crack without the key. I know I need to ...