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Asymmetric cryptography

This method of doing Cryptography is considered to be one of the best and most secure way to encrypt message. In this cryptography, the sender encrypts with his own private key and the receiver’s public key so that when the message is received by the receiver, only he can decrypt it ,as the sender has encrypted the message with his public key. The basic idea behind this cryptography is to ensure that only intended person can see the message.