An Encryption Algorithm of Self-adaptive Image Based on 2D-Logistics Mapping
نویسنده
چکیده
According to bad effect of encryption and poor sensibility of the standard Logistics chaotic mapping algorithm in image encryption, an encryption algorithm of self-adaptive image is proposed based on 2D Logistics chaotic mapping. First of all, on the basis of Logistics mapping to join an iteration variable, form 2D Logistic discrete dynamical system to enhance the sensitivity of the original algorithm. Then the original image is divided into blocks, and between blocks with the parallel optimization. And then the block image is scrambling for position, and the image after scrambling is for encryption with pixel values. Finally, slight change of any pixel is spread to the block. Simulations show that compared with the standard Logistics algorithm, the proposed improved algorithm has the better effect of encryption, and higher sensitivity.
منابع مشابه
A Novel Image Encryption Model Based on Hybridization of Genetic Algorithm, Chaos Theory and Lattice Map
Encryption is an important issue in information security which is usually provided using a reversible mathematical model. Digital image as a most frequently used digital product needs special encryption algorithms. This paper presents a new encryption algorithm high security for digital gray images using genetic algorithm and Lattice Map function. At the first the initial value of Logistic Map ...
متن کاملA stack-based chaotic algorithm for encryption of colored images
In this paper, a new method is presented for encryption of colored images. This method is based on using stack data structure and chaos which make the image encryption algorithm more efficient and robust. In the proposed algorithm, a series of data whose range is between 0 and 3 is generated using chaotic logistic system. Then, the original image is divided into four subimages, and these four i...
متن کاملImage encryption based on chaotic tent map in time and frequency domains
The present paper is aimed at introducing a new algorithm for image encryption using chaotic tent maps and the desired key image. This algorithm consists of two parts, the first of which works in the frequency domain and the second, in the time domain. In the frequency domain, a desired key image is used, and a random number is generated, using the chaotic tent map, in order to change the phase...
متن کاملImage Encryption by Using Combination of DNA Sequence and Lattice Map
In recent years, the advancement of digital technology has led to an increase in data transmission on the Internet. Security of images is one of the biggest concern of many researchers. Therefore, numerous algorithms have been presented for image encryption. An efficient encryption algorithm should have high security and low search time along with high complexity.DNA encryption is one of the fa...
متن کاملA Novel Method of Image Encryption Using Logistic Mapping
In this paper, we proposed a new method to develop secure image-encryption techniques using a logistics -based encryption algorithm. In this technique, a Haar wavelet transform was used to decompose the image and decorrelate its pixels into averaging and differencing components. The logistic based encryption algorithm produces a cipher of the test image that has good diffusion and confusion pro...
متن کامل