In modern era of digital world, exchange of information in form of image often very frequently over communication channel, the secrecy of multimedia data like images becomes very important, The issue of secrecy for image resolved In many digital applications such as sensitive visual aids, broadcasting, military services, rare satellites images and confidential medical images etc To reduce the processing overhead with the concern of Real-time data transmission application, to reduce such a huge file processing cost, we needs to enhance our encryption/decryption techniques This paper proposed a novel image encryption technique based on Hannon like chaotic map Chaos-based image encryption technique is one of the more promising encryption algorithms that provide very efficient and fast way of image encryption due to its ubiquitous phenomenon in deterministic nonlinear systems that exhibit extreme sensitivity to initial condition and random like behaviours Keywords— Image RGB colour component, image encryption, Henon map, chaotic system

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A New Approach of Colour Image Encryption Based on Henon like Chaotic Map

This paper proposes an image encryption algorithm based on CNN (Cellular Neural Network) chaotic system and matrix transformation. The algorithm uses the initial State of CNN as the encryption key, which generates five-dimensional chaotic sequence. Then the image pixel values were changed by performing XOR operation between the original image pixel values and the modified chaotic sequence. Finally, the pixel positions were changed using a construction matrix, resulting in the cipher image. The experiment results show that this algorithm has good encryption effect, strong key sensitivity and high security.

Image Encryption Using Cellular Neural Network and Matrix Transformation

Intelligent home products have serious information security risks, threatening the privacy of users. In this paper, a method of password protection using hyper-chaos based one-way hash function and secure information transmission method based on spatiotemporal chaos are proposed. The proposed method creates a unidirectional hash function using the delay induced hyper-chaotic system and the key stream iteration to protect user password and to realize user authentication. At the same time, the chaotic time series generated by the one way coupled map lattice system is used to encrypt the plaintext information for the data secure communication, which increases the security of the intelligent home system. An intelligent home system prototype is built based on a Zigbee network, cloud server, and Android system.

Hyper-chaos encryption application in intelligent home system

The traditional chaotic mapping encryption algorithm has the disadvantage of being vulnerable and insecure Therefore, in order to improve the anti-attack capability and security of encryption system, an improved image encryption Method-plaintext association scrambling image encryption algorithm is proposed The encryption process consists of two diffusion algorithms and a scrambling algorithm, and the inverse of the encryption process is the decryption process The simulation results show that the system can obtain better encryption effect, and the security is higher than the traditional encryption algorithm

Research and Implementation of Image Encryption System Based on Plaintext Association

In order to improve the security of cipher code in encryption system and obtain better diffusion effect of the encrypted image, an image encryption algorithm based on affine cipher is presented. The algorithm first scrambles pixels position by using Lorenz chaos sequence, and then introduces the affine cipher of classical cryptograph to diffuse and confuse pixel values. Theoretical analysis and experimental results show that the algorithm has high sensitivity keys, better security of encryption, and excellent diffusion and confusion properties. The algorithm has a better diffusion effect compared with the XOR encryption performance.

Digital Image Encryption Algorithm Based on Affine Cipher

In order to improve the security of secret image transmission,this paper put forward a kind of image encryption scheme based on hyper-chaotic sequences.Firstly,it added plaintext pixel information to the transformation of each element of hyper-chaotic sequences which resulted in both key sensitivity and plaintext sensitivity.Then,it shuffled and encrypted the plaintext pixels according to the separation scrambling key sequences and the gray replacement key sequences pixel by pixel.The simulation results show that the gray distribution of encrypted image is balanced with its cipher-text sensitive to plain-text and key,and it is secure with strong resistibility to various attacks,such as statistical,exhaustive and differential attacks,verifying the feasibility of this scheme.

Zhong Hou-qia

Papers

Image encryption scheme based on hyper-chaotic sequence