A Survey of Information Hiding Techniques
To protect the users' secret information from the intruders it is necessary to convert information into unidentified form. So it is impossible to get their original information for intruders. So security is most challenging aspects for all users who want to share their secret information. With the wild growth of internet and the fast communication techniques in recent years the security and the confidentiality of the sensitive information has become of prime and first importance and concern. Information hiding is an art that involves communication of secret information in an appropriate carrier, e.g., image, video, audio etc. To protect information from unauthorized access various methods for information hiding like cryptography, stegnography, hashing, and authentication have been developed and are in practice today.