公开(公告)号：EP3243131A4

公开(公告)日：2018-01-03

申请号：EP16752754

申请日：2016-01-06

Applicant: SRI INT INC

Inventor： KANE MICHAEL G

IPC: G06F21/73 ,  G06F21/86 ,  G06K19/073 ,  G09C1/00 ,  H04L9/08 ,  H04L29/06

CPC classification number: G06F21/86 ,  G06F21/73 ,  G06K19/073 ,  G09C1/00 ,  H04L9/0866 ,  H04L63/0428 ,  H04L2209/12 ,  H04L2209/805

Abstract: A device includes a substrate, an array of metal pads on a first surface of the substrate, a carbon polymer composite covering the array of metal pads, the composite having variations that result in random resistance values between the metal pads usable as a random code. A method of manufacturing a secure device, including forming an array of metal pads on a dielet substrate, the dielet substrate containing at least one memory in which is stored an encryption key, and an RF communication section, covering the array of metal pads with a carbon polymer composite such that variations in the carbon concentration in the polymer forms a unique pattern of resistance, attaching the dielet substrate to a host component, receiving a request from a security server for a unique code determined by the unique pattern of resistance, and using the encryption key, encrypting and providing the unique code to the security server.