Introduction Of Cryptography C ryptography is a means for implementing some security mechanisms. The term of 'Cryptography' is derived from two Greek words, namely crypto and graphy. In greek language crypto means secret and graphy means writing . Cryptography is the science of secret writing that provides various techniques to protect information that is an unreadable format. This unreadable format only by the intended recipients. It is the science of converting a message into a code from that hides the information contained in the message. We encrypt a message before its transmission so that an eavesdropped may not get the information contained in the message. Plaintext : The original unencrypted message is called plaintext Ciphertext : The encryption message is called ciphertext. # Cryptography technique and protocols: Cryptography techniques and protocols are used in a wide range of appli...
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