In this paper, a novel hybrid algorithm is proposed to solve the security problem of image information, which is on the basis of gray DES algorithm and fibonacci p-code ***, using self-reverse matrix to improve the Fi...
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ISBN:
(纸本)9781510845541
In this paper, a novel hybrid algorithm is proposed to solve the security problem of image information, which is on the basis of gray DES algorithm and fibonacci p-code ***, using self-reverse matrix to improve the fibonacci p-code encryption algorithm and combing it with Gray DES algorithm to proposes a new image encryption algorithm, in order to reduce image distortion. Finally, the paper evaluated the proposed hybrid algorithm ' s performance through statistical analysis and diffusion tests. As a result, the system is more robust against the JpEG compression method and can be compatible with the international universal compression method.
Image scrambling is used to make images visually unrecognizable such that unauthorized users have difficulty decoding the scrambled image to access the original image. This article presents two new image scrambling al...
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ISBN:
(纸本)9780819469847
Image scrambling is used to make images visually unrecognizable such that unauthorized users have difficulty decoding the scrambled image to access the original image. This article presents two new image scrambling algorithms based on fibonacci p-code, a parametric sequence. The first algorithm works in spatial domain and the second in frequency domain (including JpEG domain). A parameter, p, is used as a security-key and has many possible choices to guarantee the high security of the scrambled images. The presented algorithms can be implemented for encoding/decoding both in full and partial image scrambling, and can be used in real-time applications, such as image data hiding and encryption. Examples of image scrambling are provided. Computer simulations are shown to demonstrate that the presented methods also have good performance in common image attacks such as cutting (data loss), compression and noise. The new scrambling methods can be implemented on grey level images and 3-color components in color images. A new Lucas p-code is also introduced. The scrambling images based on fibonacci p-code are also compared to the scrambling results of classic fibonacci number and Lucas p-code. This will demonstrate that the classical fibonacci number is a special sequence of fibonacci p-code and show the different scrambling results of fibonacci p-code and Lucas p-code.
The present paper relates to the methods for data encoding and the reading of coded information represented by colored (including monochrome/black, gray) symbols (bars, triangles, circles, or other symbols). It also i...
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ISBN:
(纸本)9781424427932
The present paper relates to the methods for data encoding and the reading of coded information represented by colored (including monochrome/black, gray) symbols (bars, triangles, circles, or other symbols). It also introduces new algorithms for generating secure, reliable, and high capacity color barcodes by using so called weighted n-dimensional random fibonacci number based representations of data. The representation, symbols, and colors can be used as encryption keys that can be encoded into barcodes, thus eliminating the direct dependence on cryptographic techniques. To supply an extra layer of security, one may encrypt given data using different types of encryption methods.
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