Method for identifying integrated circuit that is utilized in personal digital assistant, involves determining impression of granular structure of metallic zone from digital image obtained by backscattered electron diffraction

摘要

The method involves determining representative of an impression of a granular structure of a metallic zone (ZM) by determining a digital image (IM) obtained by backscattered electron diffraction (10) resulting from bombardment of the metallic zone with an electron beam. Identification information (Id) of a product (Pr) i.e. integrated circuit, is elaborated (11) from the impression, and the identification information is stored (12) in a memory (MM). The identification information includes information related to grains and/or grain boundaries of the granular structure of the metallic zone. An independent claim is also included for a method for verifying authenticity of an integrated circuit.