Method for protection of a cryptographic algorithm

Details Method for protection of a cryptographic algorithm Method for protection of a cryptographic algorithm

G - Physics

06

F

G06F 21/00 (2006.01)

Patent

CA 2542200

The invention relates to a method for protection of a decomposable algorithm in the form of initial polynomials (P¿i?) with at least two variables and having a degree of at least two, comprises the steps of generation of combined polynomials (Q¿k?), each obtained from at least two initial polynomials (P¿i?, P¿i?+¿1?) and memorising the combined polynomials (Q¿k?) in the form of a configuration file in a memory (3), associated with a processing unit (4).

Le procédé de protection d'un algorithme décomposable sous forme de polynômes initiaux (Pi) à au moins deux variables et ayant un degré au moins égal à deux, comporte les étapes de réaliser des polynômes combinés (Qk) chacun obtenu à partir d'au moins deux polynômes initiaux (Pi, Pi+1), et de mémoriser les polynômes combinés (Qk) sous forme d'un fichier de configuration dans une mémoire (3) associée à une unité de traitement (4).

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