Quotes About Vigenère

Vigenère's work culminated in his Traicté des Chiffres ("A Treatise on Secret Writing"), published in 1586. Ironically, this was the same year that Thomas Phelippes was breaking the cipher of Mary Queen of Scots. If only Mary's secretary had read this treatise, he would have known about the Vigenère cipher, Mary's messages to Babington would have baffled Phelippes, and her life might have been spared.

the Vigenère cipher belongs to a class known as polyalphabetic, because it employs several cipher alphabets per message. The polyalphabetic nature of the Vigenère cipher is what gives it its strength, but it also makes it much more complicated to use. The additional effort required in order to implement the Vigenère cipher discouraged many people from employing it.