Integrated circuit for the authentication of a consumable storage device
OwnerKia Silverbrookinventor
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Abstract
An integrated circuit for the authentication of a consumable storage device by an apparatus includes a memory space which contains encrypted data defined by a message authentication code (MAC) applied to data relating to a consumable stored by the device and by at least one secret key (K) shared by the apparatus for decryption of the data. The MAC is a construction of a cryptographic function.
Claims7
An integrated circuit for the authentication of a consumable storage device by an apparatus, the integrated circuit comprising a memory space which contains encrypted data defined by a message authentication code (MAC) applied to data relating to a consumable stored by the device and by at least one secret key (K) shared by the apparatus for decryption of the data, the MAC being a construction of a cryptographic function.
A method of encrypting data relating to a consumable of a consumable storage device for an apparatus and stored by an integrated circuit, the method including the steps of:
- applying a message authentication code (MAC) to the data using at least one secret key shared by the apparatus to decrypt the data, the MAC being a construction of a cryptographic function.
Dependencies are inferred from the claim text.