BCS South West - Quantum Cryptography - December 2015
Channel: BCSSouthWest
Date: 2016-01-05

From 2000bc right to Enigma in WWII, cryptography was based upon substitution ciphers and was relying on a key exchange. However, can you exchange a secret message with somebody you have never met before? A positive answer to this question is nowadays of vital importance for e.g. e-commerce. With the advent of Public Key Cryptography, and most notably RSA, the Mathematics of the 20th century has delivered just that. At the beginning of the 21st century, it is Physics now, and cryptography is literally awaiting a "quantum leap": Can you transmit a key in the open and be sure that nobody has eavesdropped? 

The talk introduces the paradigms of the Quantum World. You will learn to read Free Mason ciphers, and you will understand the concept of RSA. I will then explain and illustrate Quantum Cryptography. There will be a hands-on experience as well: Using paper and pencil, create a key the "quantum way"!

www.bcs-southwest.org.uk

This event was jointly organised with the Institute of Information Security Professionals
www.instisp.org