Secure medical image steganography with RSA cryptography using decision tree

Abstract

In this article, a novel technique about secure medical information transmission of patient inside medical cover image is presented by concealing data using decision tree concept. Decision tree shows a robust mechanism by providing decisions for secret information concealing location in medical carrier image using secret information mapping concept. RSA encryption algorithm is being used for patient's unique information enciphering. The outcome of the RSA is structured into various equally distributed blocks. In steganography, secret cipher blocks are assigned to carrier image for data inserting by mapping mechanism using breadth first search. Receiver gets hidden secret medical information of patient using RSA decryption, so only authorized recipient can recognize the plain text. Performance is analyzed and measured using numerous parameters between medical stego and carrier images. Results are analyzed and compared with many of existing algorithms.