Attribute based signature (ABS) permits users produce signatures using any predicate of attributes issued from an attribute authority. ABS disallows any group of colluding users to forge a signature based on a predicate of attributes which they do not individually satisfy. Earlier schemes in this direction are either in the generic group model or support only single-level threshold predicates. ...

Edge detection is a very significant feature of image processing and refers to the algorithms, which are intended for identifying points in a digital image where the image intensity changes significantly. The need of edge detection is to find the discontinuities in intensity, surface direction, change in texture properties, and variation in scene illumination. This paper proposes a rapid and su...

In this paper, a low leakage multi Vth level shifter is designed for robust voltage shifting from sub threshold to above threshold domain using MTCMOS technique and sleepy keeper. Multi Threshold CMOS is an effective circuit level technique that improves the performance and design by utilizing both low and high threshold voltage transistors. Power dissipation has become an overriding concern fo...