Patent ID: 8359478
Filing Date: 2013-01-22
Classification: G06F,H04L

Abstract:
1. A method for protecting a static digital datum contained in a first element of an electronic circuit and intended to be exploited by a second element of this circuit, wherein: on the side of the first element, said static digital datum is converted, in a first circuit internal to the electronic circuit, into a dynamic data flow by at least one first linear feedback shift register, wherein the at least one first linear feedback shift register, in response to a first state of said static digital datum, represents a first polynomial and generates the dynamic data flow based on the first polynomial and wherein the at least one first linear feedback shift register, in response to a second state of said static digital datum, represents a second polynomial and generates the dynamic data flow based on the second polynomial; the dynamic data flow is transmitted to the second element; and on the side of the second element, the dynamic data flow is decoded, in a second circuit internal to the electronic circuit, by at least one second linear feedback shift register representing at least one of the polynomials likely to have been used by the first element.