Public+and+private+keys

=Public and private key= These are used in public-key encryption. The only difference it has with normal encryption is that it uses two keys instead of one.

//Public key// is known to everyone. //Private key// is known only to the recipient.

For example:

Selim uses Namra's public key to encrypt a message. He then sends the message to Namra, to which she uses her own private key or secret key to decrypt it.