Abstract

This work proposes an encryption method and a spatial domain method for hiding multiple binary secret images in a single cover image. Here, the sender and receiver has to share a secret key and this secret key is XORed with the binary secret images resulting in scrambled images. The scrambled binary images are concealed by placing the bits in the LSB of the cover image (either in gray scale or color image).The transmission of images is more secured with this method since it requires extraction as well as decryption with the correct key. The PSNR, MSE values, and histogram of the encryption method and LSB technique are given with MATLAB.

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