Medical Image Dispersal using Enhanced Secret Sharing Threshold Scheme

Security on digital medical image storage system has become a significant concern in today’s healthcare institution. Picture Archiving and Communication (PACS) which is one of current conventional storage systems for digital medical images, faced with several security issues. It fails to guarantee digital medical image survivability, confidentiality and integrity. Based on this issue this study proposed PixelBased Dispersal Technique on Secret Sharing Threshold Scheme. The technique combines Rabin’s Information Dispersal Algorithm (IDA) and Shamir’s Secret Sharing Algorithm (SSA) as a potential approach to address the issue of providing digital medical image security. Result shows that reconstructed digital medical image is exactly the same as its respective original image. Salt factor is added to enhance medical image security during image dispersal. However it requires 75% longer execution time on average, but constructs a better randomize pixels on the dispersed medical images.