Anti tamper encapsulation for an integrated circuit

Details Anti tamper encapsulation for an integrated circuit Anti tamper encapsulation for an integrated circuit

H - Electricity

01

L

H01L 23/58 (2006.01) G06K 19/073 (2006.01)

Patent

CA 2395656

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.

L'invention concerne un dispositif à circuit intégré comprenant un circuit utilisant un chiffrement et un élément protecteur (par exemple, une couche de conditionnement par encapsulation) réduisant l'accès au circuit. Dans le dispositif selon l'invention, le circuit réagit à au moins un paramètre physique de l'élément protecteur pour appliquer le chiffrement ou le déchiffrement (par exemple, par lecture de la clé de chiffrement), de sorte qu'une tentative de violation de l'élément protecteur pour accéder au circuit provoque un fonctionnement différent du chiffrement ou du déchiffrement.

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