Circuit provided with a secure external access

摘要

The invention relates to a circuit IC comprising an microprocessor MIC and a set of peripheral devices comprising at least one communication interface UMI for external access. The peripherals PER, unlike the communication interface UMI, are connected to the microprocessor MIC by an interconnection bus BUS. The circuit also comprises a security module CR connected to the interconnexion bus BUS and to the communication interface UMI by a dedicated link DL.