Device is incompatible to play the video
Thursday, 21 February 2002, 12:00AM
Barnard's Inn Hall

Conventional Cryptography

Professor Harold Thimbleby

Keeping secrets is one of the earliest inventions of civilisation, and has become the science of cryptography. The World War II Enigma machine was just lots of scrambling, done in ways that could be understood in principle by a school child though it took daring and powerful computing to crack it. This lecture introduces the key ideas behind conventional cryptography, and explains why it is not good enough for modern applications such as international commerce on the Internet. The lecture also serves as an introduction to the following lecture (28 February) on modern cryptography.

professor-harold-thimbleby

Harold Thimbleby is professor of computer science at Swansea University where he established the Future Interaction Technology Lab. His passion is designing dependable computer systems to accommodate human error. He has been a Royal Society Wolfson Research Merit award holder and a Royal Society Leverhulme Trust Senior Research Fellow. He has also contributed to the Encyclopedia Brittanica and was Gresham Professor of Geometry between 2001 and 2004.

All of Professor Thimbleby's previous lectures may be accessed here.

Read More
Read Less
Related Future Lectures
Related Past Lectures
WATCHED
Part of a series

The Sound of Mathematics

Professor Sarah Hart
Tuesday, 17 November 2020 - 1:00PM
WATCHED
Part of a series

The Mathematics of Bell Ringing

Professor Sarah Hart
Tuesday, 5 January 2021 - 1:00PM
WATCHED

Will Computers Outsmart Mathematicians?

Professor Kevin Buzzard
Wednesday, 20 January 2021 - 6:00PM
WATCHED
Part of a series

An Introduction to Programs

Professor Richard Harvey
Tuesday, 2 February 2021 - 6:00PM
WATCHED
Part of a series

Mathematical Journeys into Fictional Worlds

Professor Sarah Hart
Tuesday, 9 February 2021 - 1:00PM
WATCHED

Artificial Intelligence and Humour

Professor Yorick Wilks
Tuesday, 23 February 2021 - 1:00PM
WATCHED
Part of a series

Maths and Money: From Gold to Bitcoin

Professor Norman Biggs
Wednesday, 21 October 2020 - 4:00PM
WATCHED
Part of a series

An Introduction to Algorithms

Professor Richard Harvey
Tuesday, 20 October 2020 - 6:00PM
WATCHED
Part of a series

The Mathematics of Musical Composition

Professor Sarah Hart
Tuesday, 13 October 2020 - 1:00PM
WATCHED

The World of Isaac Newton

Professor Raymond Flood
Monday, 28 September 2020 - 6:00PM
WATCHED

Number Theory: Queen of Mathematics

Professor Robin Wilson
Monday, 28 September 2020 - 4:30PM
WATCHED
Part of a series

Equations That Have Changed The World

Professor Chris Budd OBE
Tuesday, 28 April 2020 - 1:00PM
WATCHED
Part of a series

Computer Bugs in Hospitals: A New Killer

Professor Martyn Thomas CBE
Tuesday, 6 February 2018 - 1:00PM
WATCHED

Designing IT to make Healthcare Safer

Professor Harold Thimbleby
Tuesday, 11 February 2014 - 6:00PM
WATCHED

Avoiding death by computer

Professor Harold Thimbleby
Monday, 28 September 2009 - 12:00AM
WATCHED

Better programming

Professor Harold Thimbleby
Thursday, 13 May 2004 - 12:00AM
WATCHED

Computer Circles

Professor Harold Thimbleby
Thursday, 26 February 2004 - 12:00AM
WATCHED

Plugging Computers In

Professor Harold Thimbleby
Thursday, 27 November 2003 - 12:00AM
WATCHED

Is Learning Like Crossing A Desert?

Professor Tadashi Tokieda
Tuesday, 21 August 2018 - 10:00AM
WATCHED

The Enigma Machine: How it Works

Professor Raymond Flood
Tuesday, 19 April 2016 - 1:10PM
WATCHED

The Fly Puzzle and Von Neumann's Response

Professor Raymond Flood
Tuesday, 19 April 2016 - 1:05PM
WATCHED

Three Great Mathematicians: Hardy, Littlewood, and Hardy-Littlewood

Professor Raymond Flood
Tuesday, 15 March 2016 - 1:05PM
WATCHED
Part of a series

Explaining Relativity with a Pencil

Professor Raymond Flood
Tuesday, 20 October 2015 - 1:20PM
WATCHED
Part of a series

Principles of Relativity: Einstein and Galileo

Professor Raymond Flood
Tuesday, 20 October 2015 - 1:15PM