Public Key Cryptography

What is public key cryptography? #

Public key cryptography is a cryptographic system used for the encryption/decryption of data. It is not one way like a hash function, meaning that the data, once encrypted, can be decrypted if you have the required key.

You start by generating a special, related pair of keys. These keys can be generated in a pair only. They are output from single execution of a key generation algorithm.