Ad: Vigenère Square (Cryptography Tabula Rasa) T-Shirt
A Vigenère square is essentially a table of alphabets and is also known as a Vigenère table Vigenère cipher or tabula rasa. It consists of the alphabet written out 26 times in different rows each alphabet shifted cyclically to the left compared to the previous alphabet corresponding to the 26 possible Caesar ciphers. At different points in the encryption process the cipher uses a different alphabet from one of the rows. The alphabet used at each point depends on a repeating keyword. Showcase your love of cryptography with any of these cryptic gifts today! Memorable gifts for all who know about encryption and decryption! myCryptography
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