Multi image hiding using joint transform digital holography

In the world of internet and digital technology, even with the most advanced technology protecting information from unauthorized distribution is still a challenging problem. Hence we can protect a data from unauthorized access through multi image hiding technology. This multi image hiding uses joint transform correlate architecture adopting two-step phase-shifting digital holography. The multi image is encrypted by using ECC algorithm. Elliptic curve cryptography (ECC) is an approach to public-key cryptography based on the algebraic structure of elliptic curves over finite fields. The encrypted of multi image is recombined and embeds into the host image. The experimental result shows that the proposed system multi image hiding is more efficient than others.