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Public-Key-Cryptography

Public-Key-Cryptography

In public-key cryptography, there are two keys: a private key and a public key. The private key is kept by the receiver. The public key is announced to the public.

Imagine Sender, as shown in Figure, wants to send a message to receiver. Sender uses the public key to encrypt the message.
When the message is received by Receiver, the private key is used to decrypt the message.