Tag Archives: Caesar Cipher

Frogs and Fireflies illustrating the quantum key distribution scheme BB84 The small quantum cryptography quiltlet, attached to the large Cryptoquilt, illustrates how two parties make a somewhat fanciful use of fireflies, calcite crystals and frogs to implement the quantum key distribution scheme Brassard-Bennett-84 (or BB84), which was the first quantum cryptography protocol; here is aContinue reading “Quiltlet – Mathematical Connections”

Cryptography or “secret writing” is an old concept. For several millenia at least, people have wanted to communicate messages to distant others in such a way that even if the message was intercepted, it would not be readable by the interceptors. To achieve this, they have used different forms of “encoding” information; would-be interceptors inventedContinue reading “Cryptography Quilt – Mathematical Connections”