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Digital communication has become an essential part of infrastructure now-a-days, a lot of applications are Internet-based and it is important that communication be made secret. As a result, the security of information passed over an open channel has become a fundamental issue and therefore, the confidentiality and data integrity are required to protect against unauthorized access and use. This has resulted in an unstable growth in the field of information hiding. Cryptography and steganography are the two popular methods available to provide security. One hides the existence of the message and the other distorts the message itself. Using cryptography, the data is transformed into some other gibberish form and then the encrypted data is transmitted.
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