Public key encryption

- [Instructor] While most people seem to have … not really any problem understanding … symmetric key encryption, public key encryption … or asymmetric key encryption, is a little bit … more confusing to many people. … So what I want to do here, is go through an inceptual … overview of how public key encryption works. … We're going to talk only users here by the way. … We're going to say that every user in our environment … has a pair of keys. … One of the keys in that particular pair, … would be accessible only to the individual user, … and therefore is known as the users private key. … Whereas the other key, in that same pair, … is publicly accessible, and that's why it's referred … to as that user's public key. … So if we take an example of an actual environment, … let's say we had 100 user's in our environment, … then we would have a total of 200 keys, … 'cause everybody has a pair of keys. … 100 private keys for each individual user, … and another 100 public keys that are still … part of the pair assigned to that user, …