Description

Our computers are used by us to do amazing feats, every single day. An easy web search picks out a number of related needles in the world's greatest haystack: the vast amounts of websites on the World Wide Web. Importing a photo to Fb sends an incredible number of bits of info over numerous error prone community links, however somehow an ideal copy of the photo comes unchanged. We use public-key cryptography to send secret data like charge card numbers, without even realizing it; and we use digital signatures to verify the identification of web sites we visit.