Abstract: Due to advancements in technology, most of the operations are now being conducted on server/cloud. But this increases the potential threat of data leakage by hackers. Thus, in order to secure the data, many steganographic and cryptographic methods have been proposed. An overview of these systems has been reviewed in this paper.
Keywords: Steganography, Cryptography, Visual Cryptography, AES, DES, Triple DES, TDES, 3DES.