Understanding why encryption is necessary

Encryption takes plain text and turns…it into cipher text by using a key…or a key pair.…The result is a meaningless message,…unless you have a key.…Now let's take and use an example.…For example, if I go to…atom.smasher.org/pgp…and input into the box, we can see encryption in action.…I will type "Encryption plays an essential role…in protecting electronic information…in many of today's businesses."…Now, Encrypt my message!…As you can see, the message would be meaningless…to anyone who does not have a key to decrypt the data.…

Today, encryption is the most effective way…to secure digital data.…There are Two Main Types of encryption.…Asymmetric encryption, also called public key encryption,…and symmetric encryption, also called…conventional encryption.…Most of the time, a hybrid cryptosystem is used…employing both methods.…Using encryption to protect data has been discussed…since the early 1980s.…As the internet became public in 1992, more serious…concerns over data protection and privacy surfaced.…

Take a look at this report published in 1996…