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To provide security of the images in the multimedia environment encryption plays an important role. The traditional cryptographic algorithm such as AES, DES, TDES, RSA, IDEA, etc., are not so effective for image encryption because of their slow processing speed, inherent features of image data like bulk data capacity, high redundancy and ineffectiveness in removing the correlations of the adjacent pixels of the image,. In order to cope with this problem a noble technique of digital image encryption is proposed. In this technique the symmetric key is used for image encryption.
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