ANTI TAMPER ENCAPSULATION FOR AN INTEGRATED CIRCUIT

摘要

An integrated circuit device comprising: a circuit which uses encryption; and a protective member (e.g. encapsulation packaging layer) which reduces access to the circuit; in which the circuit is responsive to at least one physical parameter of the protective member to apply the encryption and/or decryption (e.g. by reading the key therefrom), so that tampering with the protective member to gain access to the circuit causes the encryption and/or decryption to function differently.