  Steganography is the science of invisible communication. The purpose of
Steganography is to maintain secret communication between two parties. The
secret information can be concealed in content such as image, audio, or video.
This paper provides a novel image steganography technique to hide multiple
secret images and keys in color cover image using Integer Wavelet Transform
(IWT). There is no visual difference between the stego image and the cover
image. The extracted secret images are also similar to the original secret
images. Very good PSNR (Peak Signal to Noise Ratio) values are obtained for
both stego and extracted secret images. The results are compared with the
results of other techniques, where single image is hidden and it is found that
the proposed technique is simple and gives better PSNR values than others.
