In this letter, after reviewing the main points of the chaotic trigonometric maps and the coupled map lattices, we introduce the scheme of chaos-based image encryption based on coupled map lattices. The scheme decreases periodic effect of the ergodic dynamical systems in the chaos-based image encryption. To evaluate the security of the encrypted image of this scheme, the key space analysis, the...

The recent secure of digital images attracts much attention, and many image encryption methods have been proposed. This paper presents a new scheme for image encryption technique, based on a residue number system (RNS) sequence and non-traditional random number generators, which are grouped as a chaotic system. An image is deteriorated according to the proposed new algorithm. This system provid...

In this paper, we prompt a new algothim based on fuzzy entropy thresholding and R weighted mean algorithm for the image encryption and mapping. The image was divided into the upper and lower blocks, making the encryption factor associate with the plain text and the cipher text. The encryption formula was improved which complicated the relationship between the cipher text and the plain text and ...

This is colour image encryption method where image is encrypted by specific rule that is rearrangement of image pixels. In this paper, we present colour Image encryption and decryption by using partition and scanning pattern which is related to scan approach. SCAN language is based on spatial accessing methodology that can generate a wide range of scanning paths. This paper presents a over view...

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 al...

Today among various medium of data transmission or storage our sensitive data are not secured with a third-party, that we used to take help of. Cryptography plays an important role in securing our data from malicious attack. This paper present a partial image encryption based on bit-planes permutation using Peter De Jong chaotic map for secure image transmission and storage. The proposed partia...

With the security requirement improvement of the image on the network, some typical image encryption methods can’t meet the demands of encryption, such as Arnold cat map and Hilbert transformation. S-DES system can encrypt the input binary flow of image, but the fixed system structure and few keys will still bring some risks. However, the sensitivity of initial value that Logistic chaotic map c...

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...

In this paper, after reviewing the main points of image encryption and threshold function, we introduce the methods of chaotic image encryption based on pseudorandom bit padding that the bits be generated by the novel generalized threshold function (segmentation and self-similarity) methods. These methods decrease periodic effect of the ergodic dynamical systems in randomness of the chaotic ima...