A method for securing based on a pin of a portable data carrier against unauthorized use

摘要

A method is proposed for based on a pin secured against unauthorized use of a chip card. According to the invention, before transfer of the chip card on an authorized user according to a formation rule a card-specific start - pin is generated (102) and stored on the portable data carrier. Furthermore, the user with the formation rule published (107). In the case of initial use of the chip card, the user is presented to the start - pin (112). If this is accomplished successfully, compels the chip card immediately below the setting of a new, hereinafter referred to in valid user - pin by the user (116).