To establish a connection of data between a first processor and a processor secured, in particular in a nfc chipset

摘要

The present invention relates to a process for establishing a data link between a first processor (controller nfcc) configured to provide, on a communication port to the contact (p1), a first data carrier signal (tx1), and a second processor (sp1) configured to provide on a communication port to the contact (p2) a second data carrier signal (tx2). The method comprises the steps consisting in providing a first coupler (cp1) and a second coupler (cp1), to establish a contactless coupling between the first and second couplers and, by means of the couplers and by means of at least one signal rf (h1, vac, e1, sa1, sa2, sa3, e2, sa4), transferring the first data carrier signal (tx1) to the second processor (sp1) and transfer the second data carrier signal (tx2) to the first processor (controller nfcc). The second processor is a secure processor of the sim card.