Wavelet Based Fast Technique For Images Encryption


In recent years, image encryption and compression plays an essential roll in modern data communication fields, such as images storage in database.This paper presents a fast technique which is used to encrypt four different images into one encrypted image having a size less than the sum of the sizes of the original images -which have different sizes- using wavelet transform. This technique has many advantages: low storage requirements for the resultant image, simple, fast, and secure. Several examples are given to illustrate the performance of the proposed technique and it gives good results for both grayscale and RGB color images.