Method for challenge response authentication between a reading device and a transponder using contactless data transmission

摘要

A method and system for challenge-response authentication are provided. Challenge data are transferred within an anti-collision loop from a reading device to a transponder by means of one or more commands of an anti-collision method, with the one or more commands serving to determine transponder identification data. In the one or more commands respective challenge data are contained in a data field that is used for specifying transponder identification data, wherein it is indicated to the transponder by a parameter value in the at least one of the one or more commands that the data field of the one or more commands contains challenge data instead of transponder date. The transponder recognizes with the help of the parameter value that in the received one or more commands challenge data are contained. The transponder processes the transferred challenge data based on the challenge response authentication.

主权项

1. A method for challenge-response authentication between a reading device and a transponder based on a contactless data transmission, the method comprising the steps:
transferring challenge data from a reading device to a transponder, the challenge data being transferred within a first anti-collision loop, the first anti-collision loop including one or more commands of an anti-collision method that determine transponder identification data, wherein at least one of the one or more commands contains challenge data in a data field which is used to specify transponder identification data, and at least one of the one or more commands contains a parameter value to indicate that the data field of the one or more commands contains challenge data instead of transponder identification data; recognizing via the transponder that the challenge data is contained in the received one or more commands based on the parameter value; processing via the transponder the transferred challenge data on the basis of the challenge-response authentication; and running through a second anti-collision loop after transmission of the challenge data of the first anti-collision loop; wherein, in the second anti-collision loop, response data based on the challenge-response authentication are transmitted from the transponder to the reading device by one or more responses of the anti-collision method, and wherein, in the second anti-collision loop, the response data are contained in a data field of the response, and the data field serves to transmit transponder identification data.