Explanation/Reference:
Explanation:
There are two basic techniques for encrypting information: symmetric encryption (also called secret key
encryption) and asymmetric encryption (also called public key encryption.) in symmetric key. As long as
both sender and recipient know the secret key, they can encrypt and decrypt all messages that use this
key. A public key is made freely available to anyone who might want to send you a message. A second,
private key is kept secret, so that only you know it.