Patent ID: 7796759
Filing Date: 2010-09-14
Classification: G06Q,G07F,H01L,H04L

Abstract:
1. A method of generation of several secret quantities by an integrated circuit according to an application of these secret quantities, comprising generating, by the integrated circuit, a first digital word forming a single identifier of the integrated circuit by measuring, using a physical parameter network, a value of an electrical parameter of the integrated circuit, the measured value of the electrical parameter being sensitive to technological and manufacturing process dispersions of the integrated circuit, and converting the measured value to the first digital word, and modifying, by the integrated circuit based on an application of the integrated circuit requiring a secret quantity, the first digital word to form an individualized secret quantity required by the application, different secret quantities being generated by the integrated circuit for different applications of the integrated circuit and each of the secret quantities being derived from the physical parameter network.