Method for verifying access and/or start of passenger car, involves changing time points of electromagnetic signals of antennas and specific characteristics and/or temporal position of sending blocks correspond to cryptographic process

摘要

The method involves sending electromagnetic signals in low-and high frequency ranges in sending blocks with changeable specific characteristics. The sending blocks are lined up to a transmission message, where each block takes up a variable temporal position. The signals sent by transmission- and receiving antennas (1, 2) are received in an identification generator (5), and a response signal is processed. Time points of the signals of the antennas, the specific characteristics and/or the temporal position of the individual blocks are changed correspond to an asymmetric cryptographic process. An independent claim is also included for a device for verifying access and/or start of a vehicle.