METHOD FOR DEACTIVATING A PAYMENT MODULE, CORRESPONDING COMPUTER PROGRAM PRODUCT, STORAGE MEDIUM AND PAYMENT MODULE

摘要

The invention concerns a method for deactivating a payment module attachable to a communications terminal, comprising:
a phase for deactivating comprising at least one step for erasing the main memory of said payment module with the exception of a non-volatile memory zone in which an encryption key k is stored, said encryption key k being available only when said main memory is empty;a phase for verifying comprising:
a step for verifying that said main memory is empty, delivering a positive or negative result of verification;if said result of verification is positive:
a step for computing a response to a challenge preliminarily received by said payment module from an entity distinct from said payment module, said computation being implemented by means of said encryption key k;a step for transmitting said response to said entity.

主权项

1. A method for deactivating a payment module attachable to a communications terminal, the method comprising the following phases:
a phase of deactivating comprising at least one act of erasing an entire memory of the payment module, called a main memory, with the exception of a non-volatile memory zone in which an encryption key is stored, said encryption key being available only when the main memory of the payment module is empty; and at least one phase of verifying said deactivation comprising the following acts:
verifying that said main memory is empty, delivering a positive or negative result of verification;if said result of verification is positive:
computing a response to a challenge preliminarily received by said payment module from an entity distinct from said payment module, said computation being implemented by using said encryption key; andtransmitting said response to said entity.