Abstract: A data processing device is disclosed, which comprises a plurality of data processing hardware components, such as one or more of a microprocessor, a central processing unit, a system on chip hardware component, a conditional access hardware component, a descrambler hardware component, a graphics hardware component, a video hardware component and a field programmable gate array hardware component. A first hardware component of the plurality of data processing hardware components is configured to send a challenge to at least one remaining hardware component of the plurality of data processing hardware components. Each remaining hardware component is configured to receive a respective challenge and to process the challenge to produce one or more respective responses. The device is configured to use one or more responses to verify device integrity.

Abstract: A method of generating an image incorporating a microstructure includes the steps of obtaining an original image, generating a microstructure, and rendering a region or the whole said original image with said microstructure. The operation of generating the microstructure includes an automatic synthesis of microstructure elements from original microstructure shapes.

Abstract: A method of generating an image incorporating a microstructure includes the steps of obtaining an original image, generating a microstructure, and rendering a region or the whole said original image with said microstructure. The operation of generating the microstructure includes an automatic synthesis of microstructure elements from original microstructure shapes.

Abstract: Due to the wide availability of photocopiers, scanners and printers, security documents are more and more subject to counterfeiting attempts. The present disclosure describes security documents incorporating a new security feature based on a microstructure, whose shapes vary according to intensity and color, as well as methods and computing systems for synthesizing such security documents. The microstructure may be composed of text, graphic elements and symbols. Since the security document is built on top of the microstructure, document elements such as text, graphics and images as well as microstructure elements cannot be erased or modified without introducing visible discontinuities in the security document. Furthermore, thanks to transformations having the effect of warping the microstructure into different orientations and sizes across the security document, individual microstructure elements cannot be simply copied and inserted elsewhere.