Encrypt/Decrypt > 

Playfair Cipher decoder and encoder

Playfair cipher encoding and decoding tool, providing online Playfair decoding, Playfair encoding, and Playfair converters to quickly encrypt, decrypt, and verify Playfair cipher.

Playfair cipher codec converter:

1) Playfair cipher is a directed graph replacement cipher. It uses an alphabet for encryption and decryption, in which one letter is omitted (usually J is removed from the alphabet), and these letters are arranged in a 5x5 grid to form the original password table.
2) Enter the Playfair encryption key, remove the same characters in the key (delete the same characters that appear afterwards), replace J with I, arrange the remaining keys in a 5x5 network, and press for letters that do not appear. Arrange in order to form a password table.
3) Enter the plaintext to be encrypted and the ciphertext to be decrypted to quickly perform encryption and decryption conversion.

Previous Tool:  Affine cipher Encoder and decoder

Next Tool:  Bacon's cipher encoder and decoder