Patent ID: 6058483
Filing Date: 2000-05-02
Classification: G06Q,G07F,H04L

Abstract:
Method for secure transfer of data by a communication network, between a first entity constituted by a chip card and a second entity,comprising first producing an electronic signature, the latter making it possible to prove an initiation of the transfer, and of storing the signature in at least one memory area of the chip card and then, when the data transfer is complete, of erasing this signature, said method including a claim procedure, this procedure comprising of checking the presence or absence of the electronic signature in a memory area of the chip card, in order to know whether the data transfer has failed or succeeded, characterised in that, when the data transfer has been interrupted, the claim procedure furthermore comprising:producing a new electronic signature,replacing the signature of the failed transfer by said new signature,performing the steps of the transfer not yet executed, and thenerasing the new signature when the transfer is complete.