Security between electronic components of a portable secured electronic unit

摘要

A portable secured electronic unit includes at least two electronic components, one of which is embodied in the form of a primary electronic component and the second in the form of an interface electronic component, wherein the two electronic components are interconnected by communication elements and at least one electronic component includes security elements for securing the communication thereof the other electronic component.

主权项

1. A secure portable electronic entity comprising:
at least two electronic components including a primary electronic component and an electronic man-machine interface, the at least two electronic components being connected by a communication bus; at least one of said at least two electronic components comprising a secure processor that provides secure communication with another of said at least two electronic components through said communication bus and that is configured to encrypt and decrypt data exchanged between said at least two electronic components; and a cryptographic controller within said at least one of said at least two electronic components that authenticates the electronic man-machine interface, the cryptographic controller not including a shield or non-shield layer spreading over said at least two electronic components, wherein said cryptographic controller also detects whether the at least one of said at least two electronic components have not been separated fraudulently from the other of said at least two electronic components thereby ensuring that the at least one of said at least two electronic components is communicating with the other of said at least two electronic components, wherein said secure processor is configured to trigger a countermeasure if the electronic man-machine interface is not authenticated.