Process for protecting portable cards containing information in memory and device for its implementation

摘要

The process is intended for the protection of information stored in at least one memory of a portable object of the card kind and which can only be used on the basis of a confidential code. It is characterised in that at least one segment of the memory of the card is copied so as to place in at least one memory of the device at least one segment of the said memory of the card, then in that the memory segment of the card is erased and in that access to the memory of the device is made subordinate to the delivery of a secret and personal code with a view to authorising the reloading of the segment of the memory of the card by transferring information held in the memory of the device to the memory of the card. <IMAGE>