Encryption and HUGE numbers - Numberphile
Banks, Facebook, Twitter and Google use epic numbers - based on prime factors - to keep our Internet secrets. This is RSA public-key encryption. More links & stuff in full description below...
==========
DR. JAMES GRIME: So I've got a very big number to show youtoday used by NatWest Bank so that you can send them yoursecret bank details.It starts 2 3 4 5 3 6 7 6 2 8--[MULTIPLE CLIPS OF NUMBERS BEINGCOUNTED AT THE SAME TIME]--7.Did you get that, or do you want me to repeat it?So this number that we are reading outis 617 digits long.All banks have similar numbers when you want to send themyour credit card details.This is not a secret number.In fact, your computer will download this number when itwants to send your credit card details.It's there to find.This is public.So this code that they use on the internet is called RSA.It's named after the three people who came up with it,who were Rivest, Shamir, Adleman.Should I show you how it works?BRADY HAR...
==========
DR. JAMES GRIME: So I've got a very big number to show youtoday used by NatWest Bank so that you can send them yoursecret bank details.It starts 2 3 4 5 3 6 7 6 2 8--[MULTIPLE CLIPS OF NUMBERS BEINGCOUNTED AT THE SAME TIME]--7.Did you get that, or do you want me to repeat it?So this number that we are reading outis 617 digits long.All banks have similar numbers when you want to send themyour credit card details.This is not a secret number.In fact, your computer will download this number when itwants to send your credit card details.It's there to find.This is public.So this code that they use on the internet is called RSA.It's named after the three people who came up with it,who were Rivest, Shamir, Adleman.Should I show you how it works?BRADY HAR...
