Date Added: Aug 2010
Any communication in the language that user and user speak - that is the human language, takes the form of plain text or clear text. That is, a message in plain text can be understood by anybody knowing the language as long as the message is not codified in any manner. So, now the authors have to use coding scheme to ensure that information is hidden from anyone for whom it is not intended, even those who can see the coded data. Cryptography is the art of achieving security by encoding messages to make them non-readable. Cryptography is the practice and study of hiding information.