Method for protecting against theft the authenticating value of multiple application smart cards, smart cards therefor and terminals designed to receive said cards

摘要

The invention concerns a method for protecting against theft the authenticating value for multiple application smart cards. In order to prevent an application having access to a terminal from simulating the menu asking the user to present the authenticating value, the method provides a mechanism forcing access to the interface for presentation and verification of the authenticating value by the secure operating system whatever the application which has initiated the procedure, whenever there is a request for authenticating value. The invention is applicable to terminals (T) designed to communicate with smart cards (C) including therefor at least a function key (PIN) or a sequence of function keys reserved for a system call to the card and to initiate presentation of the authenticating value.