Multilevel Pixel Colour Values Scrambling Based on Shifting Image Technique

Digital Image Scrambling Algorithm Based on Chaotic Sequence and Decomposition and Recombination of Pixel Values

Based on chaotic sequence and decomposition and recombination of pixel values, a new digital image scrambling algorithm is proposed in the paper. While scrambling image pixel values, this new algorithm is able to change the spatial position of pixel, simultaneously scrambling both position and pixel values. Experiments show that the new algorithm is larger in key space, highly efficient, sensit...

Effect of Pixel Scrambling Method on Image Encryption

Cryptanalysis on an Image Scrambling Encryption Scheme Based on Pixel Bit

Recently, an image scrambling encryption algorithm which makes use of one-dimensional chaos system for shuffling the pixel bits was proposed in [G.-D. Ye, Pattern Recognition Lett. 31(2010) 347-354]. Through the scrambling algorithm, the pixel locations and values can be encrypted at the same time. This scheme can be thought of as a typical binary image scrambling encryption considering the bit...

Persuasive Cued Click Based Graphical Password with Scrambling For Knowledge Based Authentication Technique with Image Scrambling

Adequate user authentication is a persistent problem, particularly with handheld devices such as Personal Digital Assistants (PDAs), which tend to be highly personal and at the fringes of an organization’s influence. Yet, these devices are being used increasingly in corporate settings where they pose a security risk, not only by containing sensitive information, but also by providing the means ...

A Video Scrambling Technique Based On Space

1) 2) 3) The transmitted signal is analog. The transmission rate is very high. The allowabie bandwidth is limited, and can be accommodated only when the grey levels of adjacent pixels are highly correlated. Wyner [Wl,W2] suggested a method of scrambling a discrete time analog sequence by using a large family of linear orthogonal invertible transformations which he described, that result in a ne...