• JAHNAVI. S
• Dr.C.NANDINI

Data or information is very crucial to any organization or any individual person. The communication media i.e. internet through which we send data may not be secure every time so there is a need of other methods of securing data, Thus Information hiding becomes more necessary. Information hiding includes Cryptography and Steganography techniques. Cryptography technique was created as to secure communication privacyness and regard to this various methods to encrypt and decrypt secret message has been developed. It is also important to keep the existence of the message secret so with this intension steganography method is used. This paper enumerates advantage and disadvantage of methods implemented in existing work discussed in survey of visual cryptography and steganography techniques with their applications which has to be carried in further Research filed.

Visual Cryptography, Steganography, Shares, LSB, PSNR (Peak Signal to Noise Ratio), Secret sharing.

"DIGITAL DATA SECURITY USING VISUAL CRYPTOGRAPHY AND STEGANOGRAPHY TECHNIQUES: AN EXTENSIVE REVIEW ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 9, page no.212-218, September-2018, Available :http://www.jetir.org/papers/JETIR1809339.pdf

"DIGITAL DATA SECURITY USING VISUAL CRYPTOGRAPHY AND STEGANOGRAPHY TECHNIQUES: AN EXTENSIVE REVIEW ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 9, page no. pp212-218, September-2018, Available at : http://www.jetir.org/papers/JETIR1809339.pdf