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Paper Description


Generating and Testing Random Key for Image Encryption Using ECB and CBC Modes


Authors: Yas A. Alsultanny
Abstract: proposed method for generating random key sequences for image
encryption is implemented in this paper. The degree of randomness of the generated
sequences is tested by the five statistical tests. In addition, the level of security level of
the generated sequences is evaluated by computing entropy and similarity values with
the help of the histograms to the encrypted images. The encryption is done by using
ECB and CBC modes. The results showed that at least 79% of the generated sequences
pass randomness constraints. The paper showed that as the number of the statistical
tests is passed, the security level is increased. The security level depends on other
factors such as the encryption modes, the CBC (Cipher Block Chaining) mode gives a
higher level of security than ECB (Electronic Code Book) mode. Then by selecting a
suitable mode of encryption with key sequences, we can obtain a high level of image
encryption.
Published in: Jordan Journal of Applied Science;8(1):1-12
URL: http://asu.edu.jo/TestWeb/userfiles/file/natural_pdf/Volume-8-2006/Number-1/Generating%20and%20Testing%20Random%20Key%20for%20Image%20Encryption%20using%20ECB%20and%20CBC%20Modes.pdf
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