= Charles H. Bennett
{disambiguate=physicist}
{c}
{tag=Physicist}
{wiki}
= Charles H. Bennett
{c}
{synonym}
<Charles H. Bennett> and <Gilles Brassard> proposed <quantum key distribution> using <qubits> prepared in two incompatible measurement <bases>. The sender and receiver disclose their basis choices and retain events with matching <bases>; they test a sample for disturbance before deriving a key. A simple intercept-and-resend attack illustrates the principle: an eavesdropper choosing a random one of the two <bases> chooses incorrectly half the time and then causes a wrong retained bit half the time, giving a $1/4$ error rate. This example is an attack analysis, rather than a complete security proof.<Quantum cryptography: Public key distribution and coin tossing by Charles H. Bennett and Gilles Brassard>[1984 proceedings paper, quantum public-key distribution protocol]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Dr.%20Charles%20Bennett%20IBM%20Fellow.jpg?width=250]
{title=Portrait of <Charles H. Bennett>}
{description=IBM Research. https://creativecommons.org/licenses/by-sa/2.0/[CC BY-SA 2.0], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Dr._Charles_Bennett_IBM_Fellow.jpg}
{width=250}
Back to article page
