Playfair Cipher - Clarification With Pictures

Clarification With Pictures

Assume one wants to encrypt the digraph OR. There are three general cases:

1) * * * * * * O Y R Z * * * * * * * * * * * * * * *

Hence, OR -> YZ

 2) * * O * * * * B * * * * * * * * * R * * * * Y * *

Hence, OR -> BY

 3) Z * * O * * * * * * * * * * * R * * X * * * * * *

Hence, OR -> ZX

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Famous quotes containing the word pictures:

    ““And what is the use of a book,” thought Alice, “without pictures or conversations?””
    —Lewis Carroll [Charles Lutwidge Dodgson] (1832–1898)