We analyze the privacy preservation capabilities of a previously introduced multi-stage image representation framework where blocks of images with similar statistics are decomposed into different codebooks (dictionaries). There it was shown that at very low rate regimes, the method is capable of compressing images that come from the same family with results superior to those of the JPEG2000 cod...

Based on the security of information transmission through network in the information society, the paper puts forward covert communication technology which is more reliable than the prior encryption algorithm, analyzes channel covertness and information hiding of covert communication technology based on spread-spectrum communication technology, and establishes a covert communication system inclu...

The present study investigates the syntactic and pragmatic aspects of scrambling in Tongan (Polynesian). Scrambling in Tongan is understood as information focus movement to [Spec, T], and is licensed by two features on T, the EPP and information focus. Scrambling of a PP, however, sometimes results in ungrammaticality even if the relevant PP represents new information. We propose that this is n...

In order to improve the security of digital image transmission process, and accelerate the rate of information transfer, a novel spatial-chaos-based self-adapting image encryption scheme is proposed in this paper. Firstly, to obtain corresponding scrambling image, the spatial location of pixels of a revised digital image is shuffled by using extended 2D cat map. Then, two-dimensional pseudo-ran...

We evaluate the magnitude of two important mesoscopic effects using a realistic model of typical quantum dots. “Scrambling” and “gate effect” are defined as the change in the single-particle spectrum due to added electrons or gate-induced shape deformation, respectively. These two effects are investigated systematically in both the self-consistent Kohn-Sham sKSd theory and a Fermi liquidlike St...

In [Pattern Recognition Letters, in press, doi:10.1016/j.patrec.2009.11.008], an image scrambling encryption algorithm of pixel bit based on chaos map was proposed. Considering the algorithm as a typical binary image scrambling/permutation algorithm exerting on plaintext of sizeM×(8N), this paper proposes a novel optimal method to break it with some known/chosen-plaintexts. The spatial complexi...

Opsin, the rhodopsin apoprotein, was recently shown to be an ATP-independent flippase (or scramblase) that equilibrates phospholipids across photoreceptor disc membranes in mammalian retina, a process required for disc homoeostasis. Here we show that scrambling is a constitutive activity of rhodopsin, distinct from its light-sensing function. Upon reconstitution into vesicles, discrete conforma...

DeKaRT primitives are key-dependent reversible circuits presented at CHES 2003. According to the author, the circuits described are suitable for data scrambling but also as building blocks for block ciphers. Data scrambling of internal links and memories on smart card chips is intended for protecting data against probing attacks. In this paper, we analyze the DeKaRT primitive using linear crypt...

Lossless compression schemes with secure transmission play a key role in telemedicine applications that helps in accurate diagnosis and research. Traditional cryptographic algorithms for data security are not fast enough to process vast amount of data. Hence a novel Secured lossless compression approach proposed in this paper is based on reversible integer wavelet transform, EZW algorithm, new ...

In order to boost the security and confidentiality of information in quantum images, on foundation NEQR model, a novel watermarking scheme combining Hilbert scrambling with steganography based Moiré fringe is designed this paper. First all, for carrier image, watermark color position are denoted, respectively, by model. Next, image converted disordered scrambling, message original cannot be gai...