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Multimedia security has become a serious issue in todaypsilas highly computerized and interconnected world. Pareek et al. recently proposed an image encryption scheme based on multiple 1D chaotic logistic maps. However, it has been shown in [8] that the proposed scheme is insecure against the chosen-plaintext attack and also has some other security defects. Here a modified scheme is propose based...
A novel encryption algorithm secure to chosen-plaintext attacks is presented. As opposed to traditional key algorithms, one of the keys in the algorithm presented depends on the message itself. Two encryption matrices are generated by means of singular value decomposition (SVD), using a portion of the message. The two encryption matrices generated are further multiplied into the left and right sides...
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