20A The Reign Of Emperor Akbar, Professor Michael H. Fisher, The Great Courses, A History Of India
Crimetown - S1 E12: Mob Justice
A mob lawyer rises to become Chief Justice of the Rhode Island Supreme Court. He promises to leave his past associations behind. But it's hard to part with old friends.
For more information about this episode, and a full list of credits, visit crimetownshow.com.
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19A The Early Mughal Empire, Professor Michael H. Fisher, The Great Courses, A History Of India
18A Indian Sultans, Professor Michael H. Fisher, The Great Courses, A History Of India
50 Things That Made the Modern Economy - Public Key Cryptography
Take a very large prime number – one that is not divisible by anything other than itself. Then take another. Multiply them together. That is simple enough, and it gives you a very, very large “semi-prime” number. That is a number that is divisible only by two prime numbers. Now challenge someone else to take that semi-prime number, and figure out which two prime numbers were multiplied together to produce it. That, it turns out, is exceptionally hard. Some mathematics are a lot easier to perform in one direction than another. Public key cryptography works by exploiting this difference. And without it we would not have the internet as we know it. Tim Harford tells the story of public key cryptography – and the battle between the geeks who developed it, and the government which tried to control it.
(Photo: Encryption algorithms. Credit: Shutterstock)