  The rising need of secret image sharing with high security has led to much
advancement in lucrative exchange of important images which contain vital and
confidential information. Multi secret image sharing system (MSIS) is an
efficient and robust method for transmitting one or more secret images
securely. In recent research, n secret images are encrypted into n or n+ 1
shared images and stored in different database servers. The decoder has to
receive all n or n+1 encrypted images to reproduce the secret image. One can
recover partial secret information from n-1 or fewer shared images, which poses
risk for the confidential information encrypted. In this proposed paper we
developed a novel algorithm to increase the sharing capacity by using (n, n/8)
multi-secret sharing scheme with increased security by generating a unique
security key. A unrevealed comparison image is used to produce shares which
makes the secret image invulnerable to the hackers

Cryptography and Security