Cipher Code Blanket
60" x 80" woven 100% cotton blankets. Made in the USA.
Artwork: Lewis Carroll, The Alphabet Cipher, 1868
"Lewis Carroll published "The Alphabet-Cipher" in 1868, possibly in a children's magazine. It describes what is known as a Vigenère cipher, a well-known scheme in cryptography. While Carroll calls this cipher "unbreakable," Kasiski had already published in 1863 a volume describing how to break such ciphers and Charles Babbage had secretly found ways to break polyalphabetic ciphers in the previous decade during the Crimean War."