A New Approach to Enhance Security of Visual Cryptography Using Steganography (VisUS)
This work addresses security for data transmission over public media, but it appears incremental as it builds on existing steganography and visual cryptography techniques.
The paper tackles the problem of secure data transmission by combining steganography and visual cryptography to reduce computational overhead and space requirements, claiming better security and ease of implementation with experimental validation.
Steganography is a process that hides secrete message or secrete hologram or secrete video or secrete image whose mere presence within the source data should be undetectable and use for transmitting secret information over public media. Visual cryptography is a cryptographic technique in which no cryptographic computation is needed at the decryption end and the decryption is performed by the human visual system (HVS). In this paper, both Steganography and visual cryptography have been selected to provide more secure data transmission over the public media with less hazard of computation. This technique generates shares with less space overhead as well as without increasing the computational complexity compared to existing techniques and may provide better security. It is also easy to implement like other techniques of visual cryptography. Finally, experimental results are given to establish the security criteria.