In this era, you need to ensure that every message, document or file that you send across the Internet is protected by the highest level of security available. In light of this, many companies are switching over to using public key cryptography as a major part of their overall security program. This type of cryptography is one part of the overall package and while the public key is used to encrypt the information, it requires the private key to decipher the encrypted information and restore it to a readable format.
Public Key Cryptography Sees Wide Use In Online Retail Sites
One of the most common uses for public key cryptography is the online retail site. This key is put to use every time that a customer fills out the information on the checkout page and clicks on the "Pay Now" button. All of their information is then transmitted in a heavily encrypted format to the seller or his payment processing service, where the private key will be used to decrypt the information and use it to complete the transaction.