The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 2013
Filed:
Sep. 27, 2010
Michele Donadini, Ponzano Veneto, IT;
Michele Donadini, Ponzano Veneto, IT;
SILCA S.p.A., Vittorio Veneto, IT;
Abstract
A method for duplicating electronic keys with mutual authentication includes: applying temporarily, to an original electronic key, an inductive reader for signals exchanged between the key transponder and the vehicle immobilizer control unit; activating the vehicle instrument panel at least twice with the original key to cause the inductive reader to acquire the RDN, RDN, SIGand SIGcodes transmitted by the control unit; connecting the inductive reader to a transponder reader/writer to transfer all acquired data; determining the non-readable SK code of the immobilizer control unit via the reader/writer by using a function inverse to that creating the SIG code from the ID, RND, SK codes and the acquired data; reading from the original key, via the reader/writer, using the non-readable SK code, any other data memorized therein, reading the ID code from the original key, via the reader/writer; and memorizing in a new key all the read data.