Cryptography is a method of encrypting and decrypting the data. It is a science of protecting information by encrypting the data into an unreadable form. Cryptography enables you to transmit the data over the unsecured network like Internet in such a way that no other than the intended recipient can read it. The plain text or the message is encrypted through the encryption technique which converts the message into the cipher text. When the recipient receives the cipher text, he decrypts it and gets the original message. Plaintext →Encryption → Cipher text →Decryption → Plaintext