The wide use of digital images leads to the necessity of securing
them when they enter into an insecure channel. Image cryptography
plays a vital role in the modern communication. In this paper
we propose a new image encryption scaling scheme, which will
do both, image scaling and encryption. Cellular automata is used
for key generation and wavelet transformation is used for image
scaling. Encryption has been done in two steps: one before wavelet
transformation and another one after the wavelet transformation.
Performance evaluation results clearly show that the proposed
method is better in all aspects.